Java ActionListeners到独立类_Java_Swing_Design Patterns_Observer Pattern_Chain Of Responsibility

Java ActionListeners到独立类

java swing design-patterns

Java ActionListeners到独立类,java,swing,design-patterns,observer-pattern,chain-of-responsibility,Java,Swing,Design Patterns,Observer Pattern,Chain Of Responsibility,有没有办法将actionListener类移动到独立类我用Java和MVC设计模式做了一个例子。我有3个改变背景颜色的按钮这是模型 public class ChangeFontColorApplicationModel { public ChangeFontColorApplicationModel(){} } 看法控制器 import java.awt.event.ActionEvent; import java.awt.event.ActionListener; publ

有没有办法将actionListener类移动到独立类

我用Java和MVC设计模式做了一个例子。我有3个改变背景颜色的按钮

这是模型

public class ChangeFontColorApplicationModel {
    public ChangeFontColorApplicationModel(){}
}

看法

控制器

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class ChangeFontColorApplicationController {
private ChangeFontColorApplicationView changeFontColorApplicationViewObject;
backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}
}

现在我创建了一个处理按钮事件的界面

public interface backgroundHandler extends ActionListener{
public void setNextHandlerInChain(backgroundHandler nextInChain);
public void handleCommand(String getActionCommandString);
public void actionPerformed(ActionEvent event);
}

实现接口的每个类都处理ActionEvent。如果不能，则传递给下一个类（作为责任链）

黄色字体处理程序

import java.awt.Color;
import java.awt.event.ActionEvent;

public class yellowBackgroundHandler implements backgroundHandler{
private backgroundHandler nextInChain;
private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();

public yellowBackgroundHandler(){}

@Override
public void setNextHandlerInChain(backgroundHandler nextInChain) {
    this.nextInChain = nextInChain;
}

@Override
public void handleCommand(String getActionCommandString) {
    if(getActionCommandString.equalsIgnoreCase("Yellow font")){
        ChangeFontColorApplicationViewObject.setBackground(Color.yellow);
    }
    else {
        nextInChain.handleCommand(getActionCommandString);
    }
}

@Override
public void actionPerformed(ActionEvent event) {
    try{
        handleCommand(event.getActionCommand());
    }
    catch (Exception exeption){
        ChangeFontColorApplicationViewObject.setTitle(exeption.toString());            
    }
}
}

import java.awt.Color;
import java.awt.event.ActionEvent;

public class blackBackgroundHandler implements backgroundHandler{
private backgroundHandler nextInChain;
private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();

public blackBackgroundHandler(){}

@Override
public void setNextHandlerInChain(backgroundHandler nextInChain) {
    this.nextInChain = nextInChain;
}

@Override
public void handleCommand(String getActionCommandString) {
    if(getActionCommandString.equalsIgnoreCase("Black font")){
        ChangeFontColorApplicationViewObject.setBackground(Color.BLACK);
    }
    else {
        nextInChain.handleCommand(getActionCommandString);
    }
}

@Override
public void actionPerformed(ActionEvent event) {
    try{
        handleCommand(event.getActionCommand());
    }
    catch (Exception exeption){
        ChangeFontColorApplicationViewObject.setTitle(exeption.toString());            
    }
}
}

import java.awt.Color;
import java.awt.event.ActionEvent;

public class blueBackgroundHandler implements backgroundHandler{
private backgroundHandler nextInChain;
private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();

public blueBackgroundHandler(){}

@Override
public void setNextHandlerInChain(backgroundHandler nextInChain) {
    this.nextInChain = nextInChain;
}

@Override
public void handleCommand(String getActionCommandString) {
    if(getActionCommandString.equalsIgnoreCase("Μπλε φόντο")){
        ChangeFontColorApplicationViewObject.setBackground(Color.BLUE);
    }
    else {
        ChangeFontColorApplicationViewObject.setTitle("This is the back end of COR");
    }
}

@Override
public void actionPerformed(ActionEvent event) {
    try{
        handleCommand(event.getActionCommand());
    }
    catch (Exception exeption){
        ChangeFontColorApplicationViewObject.setTitle(exeption.toString());            
    }
}
}

黑色字体处理程序

import java.awt.Color;
import java.awt.event.ActionEvent;

public class yellowBackgroundHandler implements backgroundHandler{
private backgroundHandler nextInChain;
private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();

public yellowBackgroundHandler(){}

@Override
public void setNextHandlerInChain(backgroundHandler nextInChain) {
    this.nextInChain = nextInChain;
}

@Override
public void handleCommand(String getActionCommandString) {
    if(getActionCommandString.equalsIgnoreCase("Yellow font")){
        ChangeFontColorApplicationViewObject.setBackground(Color.yellow);
    }
    else {
        nextInChain.handleCommand(getActionCommandString);
    }
}

@Override
public void actionPerformed(ActionEvent event) {
    try{
        handleCommand(event.getActionCommand());
    }
    catch (Exception exeption){
        ChangeFontColorApplicationViewObject.setTitle(exeption.toString());            
    }
}
}

import java.awt.Color;
import java.awt.event.ActionEvent;

public class blackBackgroundHandler implements backgroundHandler{
private backgroundHandler nextInChain;
private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();

public blackBackgroundHandler(){}

@Override
public void setNextHandlerInChain(backgroundHandler nextInChain) {
    this.nextInChain = nextInChain;
}

@Override
public void handleCommand(String getActionCommandString) {
    if(getActionCommandString.equalsIgnoreCase("Black font")){
        ChangeFontColorApplicationViewObject.setBackground(Color.BLACK);
    }
    else {
        nextInChain.handleCommand(getActionCommandString);
    }
}

@Override
public void actionPerformed(ActionEvent event) {
    try{
        handleCommand(event.getActionCommand());
    }
    catch (Exception exeption){
        ChangeFontColorApplicationViewObject.setTitle(exeption.toString());            
    }
}
}

import java.awt.Color;
import java.awt.event.ActionEvent;

public class blueBackgroundHandler implements backgroundHandler{
private backgroundHandler nextInChain;
private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();

public blueBackgroundHandler(){}

@Override
public void setNextHandlerInChain(backgroundHandler nextInChain) {
    this.nextInChain = nextInChain;
}

@Override
public void handleCommand(String getActionCommandString) {
    if(getActionCommandString.equalsIgnoreCase("Μπλε φόντο")){
        ChangeFontColorApplicationViewObject.setBackground(Color.BLUE);
    }
    else {
        ChangeFontColorApplicationViewObject.setTitle("This is the back end of COR");
    }
}

@Override
public void actionPerformed(ActionEvent event) {
    try{
        handleCommand(event.getActionCommand());
    }
    catch (Exception exeption){
        ChangeFontColorApplicationViewObject.setTitle(exeption.toString());            
    }
}
}

蓝色字体处理程序

import java.awt.Color;
import java.awt.event.ActionEvent;

public class yellowBackgroundHandler implements backgroundHandler{
private backgroundHandler nextInChain;
private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();

public yellowBackgroundHandler(){}

@Override
public void setNextHandlerInChain(backgroundHandler nextInChain) {
    this.nextInChain = nextInChain;
}

@Override
public void handleCommand(String getActionCommandString) {
    if(getActionCommandString.equalsIgnoreCase("Yellow font")){
        ChangeFontColorApplicationViewObject.setBackground(Color.yellow);
    }
    else {
        nextInChain.handleCommand(getActionCommandString);
    }
}

@Override
public void actionPerformed(ActionEvent event) {
    try{
        handleCommand(event.getActionCommand());
    }
    catch (Exception exeption){
        ChangeFontColorApplicationViewObject.setTitle(exeption.toString());            
    }
}
}

import java.awt.Color;
import java.awt.event.ActionEvent;

public class blackBackgroundHandler implements backgroundHandler{
private backgroundHandler nextInChain;
private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();

public blackBackgroundHandler(){}

@Override
public void setNextHandlerInChain(backgroundHandler nextInChain) {
    this.nextInChain = nextInChain;
}

@Override
public void handleCommand(String getActionCommandString) {
    if(getActionCommandString.equalsIgnoreCase("Black font")){
        ChangeFontColorApplicationViewObject.setBackground(Color.BLACK);
    }
    else {
        nextInChain.handleCommand(getActionCommandString);
    }
}

@Override
public void actionPerformed(ActionEvent event) {
    try{
        handleCommand(event.getActionCommand());
    }
    catch (Exception exeption){
        ChangeFontColorApplicationViewObject.setTitle(exeption.toString());            
    }
}
}

import java.awt.Color;
import java.awt.event.ActionEvent;

public class blueBackgroundHandler implements backgroundHandler{
private backgroundHandler nextInChain;
private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();

public blueBackgroundHandler(){}

@Override
public void setNextHandlerInChain(backgroundHandler nextInChain) {
    this.nextInChain = nextInChain;
}

@Override
public void handleCommand(String getActionCommandString) {
    if(getActionCommandString.equalsIgnoreCase("Μπλε φόντο")){
        ChangeFontColorApplicationViewObject.setBackground(Color.BLUE);
    }
    else {
        ChangeFontColorApplicationViewObject.setTitle("This is the back end of COR");
    }
}

@Override
public void actionPerformed(ActionEvent event) {
    try{
        handleCommand(event.getActionCommand());
    }
    catch (Exception exeption){
        ChangeFontColorApplicationViewObject.setTitle(exeption.toString());            
    }
}
}

最后，我用main方法创建了这个类

public class ChangeFontColorApp {
public static void main(String[] args){
    ChangeFontColorApplicationView changeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
    ChangeFontColorApplicationController changeFontColorApplicationControllerObject = new ChangeFontColorApplicationController(changeFontColorApplicationViewObject);

    changeFontColorApplicationViewObject.setVisible(true);
    changeFontColorApplicationViewObject.setSize(600, 600);
       changeFontColorApplicationViewObject.setDefaultCloseOperation(ChangeFontColorApplicationView.EXIT_ON_CLOSE);
}
}

有什么办法可以让这一切顺利进行吗？我不希望有一个内部类用于事件处理，其中包含一个multiple if blick。任何建议都将不胜感激。

那行不通。但是，问题并不是因为您有独立类（使用独立类是可以的）。相反，问题在于：

在view类中，您有：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

这意味着所有按钮的点击都由yellowBackgroundHandler处理。但是，yellowBackgroundHandler只接受从changeToYellowButton的点击。除此之外，yellowBackgroundHandler未配置下一个处理程序

若要解决此问题，请在视图类中更改：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

到

在控制器类中，更改以下内容：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

到

我看到的另一个问题是yellowBackgroundHandler、blackBackgroundHandler和blueBackgroundHandler都有私有变量ChangeFontColorApplicationViewObject，它指向自己的ChangeFontColorApplicationView实例。我们需要这个变量来指向在main方法中创建的实例。要执行此操作，请更改以下内容：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

致：

改变这一点：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

致：

改变这一点：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

致：

最后，改变这一点：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

到

那不行。但是，问题并不是因为您有独立类（使用独立类是可以的）。相反，问题在于：

在view类中，您有：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

若要解决此问题，请在视图类中更改：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

到

在控制器类中，更改以下内容：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

到

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

致：

改变这一点：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

致：

改变这一点：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

致：

最后，改变这一点：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

到

那不行。但是，问题并不是因为您有独立类（使用独立类是可以的）。相反，问题在于：

在view类中，您有：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

若要解决此问题，请在视图类中更改：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

到

在控制器类中，更改以下内容：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

到

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

致：

改变这一点：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

致：

改变这一点：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

致：

最后，改变这一点：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

到

那不行。但是，问题并不是因为您有独立类（使用独立类是可以的）。相反，问题在于：

在view类中，您有：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

若要解决此问题，请在视图类中更改：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

到

在控制器类中，更改以下内容：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

到

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

致：

改变这一点：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

致：

改变这一点：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

致：

最后，改变这一点：

public void addButtonActionListener(){
    changeToYellowButton.addActionListener(new yellowBackgroundHandler());
    changeToBlackButton.addActionListener(new yellowBackgroundHandler());
    changeToBlueButton.addActionListener(new yellowBackgroundHandler());
}

this.changeFontColorApplicationViewObject.addButtonActionListener();

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blackBackgroundHandler(){}

private ChangeFontColorApplicationView ChangeFontColorApplicationViewObject = new ChangeFontColorApplicationView();
public blueBackgroundHandler(){}

backgroundHandler yellowBackgroundHandlerObject = new yellowBackgroundHandler();
backgroundHandler blackBackgroundHandlerObject = new blackBackgroundHandler();
backgroundHandler blueBackgroundHandlerObject = new blueBackgroundHandler();

public ChangeFontColorApplicationController(ChangeFontColorApplicationView changeFontColorApplicationViewObject){
    this.changeFontColorApplicationViewObject = changeFontColorApplicationViewObject;

    yellowBackgroundHandlerObject.setNextHandlerInChain(blackBackgroundHandlerObject);
    blackBackgroundHandlerObject.setNextHandlerInChain(blueBackgroundHandlerObject);

    this.changeFontColorApplicationViewObject.addButtonActionListener();
}

到

请阅读。代码墙是坏的。没有人想读这些。是的，你可以写一个动作控制器类。您的控制器不必是一个类。它可以是多个类，每个类都对特定的操作做出响应。看看我的文章，看看使用MVC创建JavaSwing应用程序的一种方法。谢谢你的建议，请阅读。代码墙是坏的。没有人想读这些。是的，你可以写一个动作控制器类。您的控制器不必是一个类。它可以是多个类，每个类都对特定的操作做出响应。看看我的文章，看看使用MVC创建JavaSwing应用程序的一种方法。谢谢你的建议，请阅读。代码墙是坏的。没有人想读这些。是的，你可以写一个动作控制器类。您的控制器不必是一个类。它可以是多个类，每个类都对特定的操作做出响应。看看我的文章，看看使用MVC创建JavaSwing应用程序的一种方法。谢谢你的建议，请阅读。代码墙是坏的。没有人想读这些。是的，你可以写