Java jbutton事件ActionListener
您好，我有一个正在实施的项目，对于这个类NewPatient（），我有3个按钮，我想触发事件，但不幸的是，我到目前为止能够触发两个按钮的事件，这两个按钮是返回并清除的。但是提交一个不会触发任何我不理解的事件。我不知道我错过了什么。我已经发布了下面的m 3课程Java jbutton事件ActionListener,java,swing,jbutton,Java,Swing,Jbutton,您好，我有一个正在实施的项目，对于这个类NewPatient（），我有3个按钮，我想触发事件，但不幸的是，我到目前为止能够触发两个按钮的事件，这两个按钮是返回并清除的。但是提交一个不会触发任何我不理解的事件。我不知道我错过了什么。我已经发布了下面的m 3课程 in short that is how I refined it import javax.swing.JFrame; public class MyCare { publi
in short that is how I refined it
import javax.swing.JFrame;
public class MyCare
{
public static void main(String[] args)
{
NewPatient application = new NewPatient();
application.setVisible(true);
application.setLocation(500,150);
//application.setLocationRelativeTo(null);
application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
/**
* @(#)NewPatient.java
*
*
* @author
* @version 1.00 2014/9/8
*/
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JPanel;
import javax.swing.BorderFactory;
import javax.swing.border.TitledBorder;
import javax.swing.border.LineBorder;
import javax.swing.border.Border;
import java.awt.Color;
import javax.swing.JPasswordField;
import javax.swing.JButton;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemListener;
import java.awt.event.ItemEvent;
import javax.swing.JTabbedPane;
import java.awt.Font;
import javax.swing.JComboBox;
import java.util.Random;
import javax.swing.JRadioButton;
import javax.swing.ButtonGroup;
import javax.swing.JTextArea;
import javax.swing.Box;
import javax.swing.JScrollPane;
public class NewPatient extends JFrame implements ActionListener
{
//////////////////////// new patient labels
private JLabel name;
private JLabel sname;
private JLabel initial;
/////////////////////////////// new patient textfields
private JTextField nameField;
private JTextField snameField;
private JTextField initialField;
//
/////// buttons
private JButton back;
private JButton clear;
private JButton send;
///// container
private JPanel container;
public NewPatient()
{
super("NEW PATIENT");
this.setSize(600,580);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setResizable(false);
//////////////// initializing and setting the main panel
container = new JPanel();
Border titleBorder = new TitledBorder(new LineBorder(Color.BLACK),"REGISTER");
container.setBorder(titleBorder);
container.setLayout(null);
//////////////////////// folder
name = new JLabel("NAME(S):");
name.setBounds(10,85,80,15);
// name.setFont(labeNameFont);
nameField = new JTextField();
nameField.setBounds(80,80,150,27);
// nameField.setFont(labeNameFont);
initialField = new JTextField(15);
initialField.setBounds(407,80,60,27);
// initialField.setFont(labeNameFont);
///////////////// surname
sname = new JLabel("SURNAME:");
sname.setBounds(10,119,80,15);
// sname.setFont(labeNameFont);
snameField = new JTextField(15);
snameField.setBounds(80,115,150,27);
// snameField.setFont(labeNameFont);
////////////////////////////// back
back = new JButton("BACK");
// back.setFont(labeNameFont);
back.setBounds(80,490,80,27);
///////////////////////// clear
clear = new JButton("CLEAR");
// clear.setFont(labeNameFont);
clear.setBounds(280,490,80,27);
///////////////////////// Proceed
send = new JButton("SUBMIT");
// send.setFont(labeNameFont);
send.setBounds(480,490,80,27);
////////////////add components to panel
registerPatient();
///////////////// register button events
back.addActionListener(this);
clear.addActionListener(this);
send.addActionListener(this);
//// countryBox.addItemListener(this);
////////////adding panel
add(container);
}
public void registerPatient()
{
container.add(name);
container.add(nameField);
container.add(sname);
container.add(snameField);
////////// add buttons
container.add(back);
container.add(clear);
container.add(send);
this.setVisible(true);
this.setLocation(500,80);
}
/////////////////// clear fields
public void clearFields()
{
nameField.setText("");
snameField.setText("");
}
//////////////////////// triggering events
public void actionPerformed(ActionEvent event)
{
if(event.getActionCommand().equals("BACK"))
{
//
this.dispose();
}
if(event.getActionCommand().equals("CLEAR"))
{
clearFields();
}
if(event.getActionCommand().equals("SUBMIT"))
{
//ValidateInput validateData = new ValidateInput(); //// input validation
FullDetails mydetails = new FullDetails();
System.out.println("gtmtfsgsdg");
try
{
if(!ValidateInput.validateFirstName(nameField.getText()))
{
System.out.println("youtube");
String message = String.format("Invalid Format!!! NAME must only be one word");
JOptionPane.showMessageDialog(null,message, "ERROR", JOptionPane.ERROR_MESSAGE);
}
else
{
mydetails.setFirstName(nameField.getText()) ;
if(!ValidateInput.validateSurName(snameField.getText()))
{
String msg = String.format("Invalid Format!!! SURNAME must only be one word");
JOptionPane.showMessageDialog(null, msg, "ERROR", JOptionPane.ERROR_MESSAGE);
}
else{
mydetails.setSurname(snameField.getText());
}
}
}
catch(Exception e)
{
String msg = String.format("Invalid input. Please make sure that you have filled every text fields!!! Please enter a correct one");
JOptionPane.showMessageDialog(null, msg, "ERROR", JOptionPane.ERROR_MESSAGE);
}
}
}
}
/**
* @(#)ValidateInput.java
*/
public class ValidateInput
{
public static boolean validateFirstName(String firstName)
{
return firstName.matches("[a-zA-Z]*");
}
public static boolean validateSurName(String surname)
{
return surname.matches("[A-zA-z]+(['-][a-zA-Z]+)*");
}
public static boolean validateInitial(String initial)
{
return initial.matches("[A-Z]*");
}
}
public class FullDetails
{
private static String firstName;
private static String surname;
public void setFirstName(String firstName)
{
this.firstName = firstName;
}
public String getFirstName()
{
return firstName;
}
public void setSurname(String surname)
{
this.surname = surname;
}
public String getSurname()
{
return surname;
}
public static String getSurnam()
{
return surname;
}
}
在actionPerformed方法的SUBMIT部分中创建一个FullDetails对象，将其分配给mydetails变量，并向其中添加一些数据，包括名称信息，但之后您似乎不会对该对象及其数据执行任何操作。您将需要对该对象执行一些操作，可能需要在GUI的某个位置显示其内容，以便它执行任何操作 另外，请注意，您的FullDetails类存在静态字段使用不当的问题。大多数字段都应该是非静态实例字段。通过这样做，每个FullDetails实例将共享所有相同的数据，这有可能产生严重的副作用，包括FullDetails对象的集合，这些对象都不是唯一的。您将需要修复此问题 其他不太重要的问题：
- 您的GUI主要使用空布局和
，这是您希望避免的，因为使用空布局会导致非常不灵活的GUI，虽然它们在一个平台上看起来不错，但在大多数其他平台或屏幕分辨率上看起来很糟糕，并且很难更新和维护设置边界 - 如果您仍然需要帮助，那么根据我对您原始帖子的评论，您将需要创建并发布一个。我看到您已经将发布的代码缩短了一些，但它仍然有非核心对象，如JDateChooser，它仍然引用您的其他类，如PatientPanel，并且仍然没有主方法，这意味着我们无法编译、运行或测试它
编辑
我试图为您的代码创建一个可编译版本，但当我运行它时，SUBMIT部分中的System.out.println可以工作：
import java.awt.Color;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.util.Random;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.border.Border;
import javax.swing.border.LineBorder;
import javax.swing.border.TitledBorder;
//!! import com.toedter.calendar.*; //!! we don't have this package
public class NewPatient extends JFrame implements ActionListener, ItemListener {
// ////////////////////// new patient labels
// !! enter code here //!! WTF??? this shouldn't be here, non commented
private JLabel name;
private JLabel sname;
private JLabel initial;
private JLabel gender;
private JLabel address;
private JLabel confirm;
private JLabel phone;
private JLabel email;
private JLabel dob;
private JLabel country;
private JLabel city;
private JLabel province;
private JLabel balance;
private JLabel userName;
private JLabel password;
private JLabel mail;
private JLabel folderLabel;
private JLabel idLabel;
private JLabel label;
private JLabel label1;
// ///////////////////////////// new patient textfields
private JTextField nameField;
private JTextField snameField;
private JTextField initialField;
// private JTextField dobField;
private JTextField provinceField;
private JTextField phoneField;
private JTextField emailField;
private JTextField balanceField;
private JTextField userNameField;
private JTextField folderField;
private JTextField idField;
private JTextField cityField;
private JTextField mailField;
// /////////////////// state province combo box
private JComboBox countryBox;
// private JComboBox cityBox;
// private JComboBox provinceBox;
// ////////////// password fields
private JPasswordField passwordField;
private JPasswordField confirmField;
// /////////////// radio buttons
private JRadioButton maleBtn;
private JRadioButton femaleBtn;
// ///////////// radio button group
private ButtonGroup groupSex;
// //////////////panel to containt components
private JPanel container;
// ///////////// fonts
Font labeNameFont = null;
// //////////// text area
private JTextArea addressArea;
// ///////////// box
private Box boxArea;
// /////////////////////// variables
private static final String[] countryNames = { "", "BOTSWANA", "CONGO",
"DR CONGO", "SOUTH AFRICA", "RWANDA", "ZIMBABWE" };
// //////////////////// buttons
private JButton back;
private JButton clear;
private JButton send;
// ///////////// calendar
// !! private JDateChooser chooser;
public NewPatient() {
super("NEW PATIENT");
this.setSize(600, 580);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setResizable(false);
// /////////////////// labels fonts
labeNameFont = new Font("SansSerif", Font.BOLD, 12);
// ////////////// initializing and setting the main panel
container = new JPanel();
Border titleBorder = new TitledBorder(new LineBorder(Color.BLACK),
"REGISTER");
container.setBorder(titleBorder);
container.setLayout(null);
// ////////////////////// folder
folderLabel = new JLabel("FOLDER NUMBER:");
folderLabel.setBounds(140, 30, 110, 25);
folderLabel.setFont(labeNameFont);
folderField = new JTextField(15);
folderField.setBounds(250, 30, 90, 27);
folderField.setEditable(false);
folderField.setBackground(Color.YELLOW);
folderField.setText(patientNum());
folderField.setFont(labeNameFont);
// ////////////////// name
name = new JLabel("NAME(S):");
name.setBounds(10, 85, 80, 15);
name.setFont(labeNameFont);
nameField = new JTextField();
nameField.setBounds(80, 80, 150, 27);
nameField.setFont(labeNameFont);
// //////////////////// initial
initial = new JLabel("INITIAL:");
initial.setFont(labeNameFont);
initial.setBounds(347, 82, 80, 20);
initialField = new JTextField(15);
initialField.setBounds(407, 80, 60, 27);
initialField.setFont(labeNameFont);
// /////////////// surname
sname = new JLabel("SURNAME:");
sname.setBounds(10, 119, 80, 15);
sname.setFont(labeNameFont);
snameField = new JTextField(15);
snameField.setBounds(80, 115, 150, 27);
snameField.setFont(labeNameFont);
// //////////////////////////// gender radio and group button
gender = new JLabel("GENDER:");
gender.setBounds(347, 117, 80, 15);
gender.setFont(labeNameFont);
maleBtn = new JRadioButton("MALE");
maleBtn.setBounds(407, 114, 80, 20);
maleBtn.setFont(labeNameFont);
femaleBtn = new JRadioButton("FEMALE");
femaleBtn.setFont(labeNameFont);
femaleBtn.setBounds(490, 114, 80, 20);
groupSex = new ButtonGroup();
groupSex.add(maleBtn);
groupSex.add(femaleBtn);
// ////////////////// id
idLabel = new JLabel("ID NUM:");
idLabel.setBounds(10, 154, 80, 15);
idLabel.setFont(labeNameFont);
idField = new JTextField(15);
idField.setBounds(80, 150, 150, 27);
idField.setFont(labeNameFont);
// /////////////////// address
address = new JLabel("Address:");
address.setBounds(347, 154, 70, 15);
address.setFont(labeNameFont);
boxArea = Box.createHorizontalBox();
addressArea = new JTextArea(10, 10);
addressArea.setLineWrap(true);
addressArea.setFont(labeNameFont);
boxArea.setBounds(407, 150, 150, 80);
boxArea.setFont(labeNameFont);
boxArea.add(new JScrollPane(addressArea));
// /////////// date of birth
dob = new JLabel("D.O.B:");
dob.setBounds(10, 190, 50, 15);
dob.setFont(labeNameFont);
/*
* dobField = new JTextField(15); dobField.setBounds(80,185,150,27);
* dobField.setFont(labeNameFont);
*/
// !! chooser = new JDateChooser();
// chooser.setFont(labeNameFont);
// chooser.setBounds(80,185,150,27);
// ///////////////////////// country
country = new JLabel("COUNTRY:");
country.setBounds(10, 230, 70, 15);
country.setFont(labeNameFont);
countryBox = new JComboBox(countryNames);
countryBox.setBounds(80, 225, 150, 27);
countryBox.setFont(labeNameFont);
countryBox.setMaximumRowCount(3);
// /////////////////////////////////// city
city = new JLabel("CITY:");
city.setFont(labeNameFont);
city.setBounds(347, 248, 70, 15);
// city.setVisible(false);
cityField = new JTextField(15);
cityField.setFont(labeNameFont);
cityField.setBounds(407, 242, 150, 27);
// cityField.setVisible(false);
cityField.setEditable(false);
// //////////////////// province
province = new JLabel("PROVINCE:");
province.setBounds(10, 271, 80, 15);
province.setFont(labeNameFont);
provinceField = new JTextField(15);
provinceField.setFont(labeNameFont);
provinceField.setBounds(80, 267, 150, 27);
provinceField.setEditable(false);
// /////////////////////// phone
phone = new JLabel("PHONE:");
phone.setBounds(10, 313, 70, 15);
phone.setFont(labeNameFont);
phoneField = new JTextField(15);
phoneField.setBounds(80, 306, 150, 27);
phoneField.setFont(labeNameFont);
// /////////////////////// email
email = new JLabel("EMAIL:");
email.setBounds(347, 288, 70, 15);
email.setFont(labeNameFont);
emailField = new JTextField(15);
emailField.setBounds(409, 282, 150, 27);
emailField.setFont(labeNameFont);
mail = new JLabel("CONFIRM EMAIL:");
mail.setBounds(347, 335, 100, 15);
mail.setFont(labeNameFont);
mailField = new JTextField(15);
mailField.setBounds(410, 360, 150, 27);
mailField.setFont(labeNameFont);
label1 = new JLabel("\" name@kalilinux.org \"");
label1.setFont(new Font("SansSerif", Font.BOLD + Font.ITALIC, 12));
label1.setBounds(420, 300, 150, 27);
// ///////////// phone formaat label
// Font font = null;
label = new JLabel("(0XX-XXX-XXXX)");
label.setFont(new Font("SansSerif", Font.BOLD + Font.ITALIC, 12));
label.setBounds(100, 325, 150, 27);
// ////////////// address
balance = new JLabel("BALANCE:");
balance.setBounds(10, 360, 70, 15);
balance.setFont(labeNameFont);
balanceField = new JTextField(15);
balanceField.setBounds(80, 357, 150, 27);
balanceField.setFont(labeNameFont);
// /////// username and password
userName = new JLabel("USER NAME:");
userName.setBounds(10, 395, 100, 15);
userName.setFont(labeNameFont);
userNameField = new JTextField(15);
userNameField.setBounds(80, 392, 150, 27);
userNameField.setFont(labeNameFont);
password = new JLabel("PASSWORD:");
password.setBounds(10, 435, 80, 15);
password.setFont(labeNameFont);
passwordField = new JPasswordField(15);
passwordField.setBounds(80, 432, 150, 27);
passwordField.setFont(labeNameFont);
confirm = new JLabel("CONFIRM PASSWORD:");
confirm.setBounds(347, 403, 150, 15);
confirm.setFont(labeNameFont);
confirmField = new JPasswordField(15);
confirmField.setBounds(410, 425, 150, 27);
confirmField.setFont(labeNameFont);
// //////////////////////////// back
back = new JButton("BACK");
back.setFont(labeNameFont);
back.setBounds(80, 490, 80, 27);
// /////////////////////// clear
clear = new JButton("CLEAR");
clear.setFont(labeNameFont);
clear.setBounds(280, 490, 80, 27);
// /////////////////////// Proceed
send = new JButton("SUBMIT");
send.setFont(labeNameFont);
send.setBounds(480, 490, 80, 27);
// //////////////add components to panel
registerPatient();
// /////////////// register button events
back.addActionListener(this);
clear.addActionListener(this);
send.addActionListener(this);
countryBox.addItemListener(this);
// //////////adding panel
add(container);
}
public String patientNum() {
Random numberGenerated = new Random();
String myNumGen = " MKW - ";
int starter;
starter = 473 + numberGenerated.nextInt(9528);
String start = String.format("%d", starter);
return myNumGen + " " + start;
}
public void registerPatient() {
container.add(folderLabel);
container.add(folderField);
container.add(name);
container.add(nameField);
container.add(sname);
container.add(snameField);
container.add(idLabel);
container.add(idField);
container.add(dob);
// container.add(dobField);
// !! container.add(chooser);
container.add(initial);
container.add(initialField);
container.add(gender);
container.add(maleBtn);
container.add(femaleBtn);
container.add(address);
container.add(boxArea);
container.add(country);
container.add(countryBox);
container.add(city);
container.add(cityField);
container.add(province);
container.add(provinceField);
container.add(phone);
container.add(phoneField);
container.add(label);
container.add(label1);
container.add(email);
container.add(emailField);
container.add(balance);
container.add(balanceField);
container.add(mail);
container.add(mailField);
container.add(userName);
container.add(userNameField);
container.add(password);
container.add(passwordField);
container.add(confirm);
container.add(confirmField);
// //////// add buttons
container.add(back);
container.add(clear);
container.add(send);
this.setVisible(true);
this.setLocation(500, 80);
}
// ///////////////// clear fields
public void clearFields() {
folderField.setText(patientNum());
folderField.setFont(labeNameFont);
nameField.setText("");
initialField.setText("");
snameField.setText("");
idField.setText("");
// !! chooser.setCalendar(null);
provinceField.setText("");
cityField.setText("");
emailField.setText("");
confirmField.setText("");
passwordField.setText("");
mailField.setText("");
userNameField.setText("");
balanceField.setText("");
addressArea.setText("");
phoneField.setText("");
countryBox.setSelectedIndex(0);
groupSex.clearSelection();
// femaleBtn.setSelected(false);
}
// ////////////////////// triggering events
public void itemStateChanged(ItemEvent myevent) {
Object selected = countryBox.getSelectedItem();
if (selected.toString().equals("")) {
provinceField.setText("");
cityField.setText("");
} else if (selected.toString().equals("BOTSWANA")) {
provinceField.setText("SOUTH-EAST");
cityField.setText("GABORONE");
} else if (selected.toString().equals("CONGO")) {
provinceField.setText("POOL");
cityField.setText("BRAZAVILLE");
} else if (selected.toString().equals("DR CONGO")) {
provinceField.setText("KINSHASA");
cityField.setText("KINSHASA");
} else if (selected.toString().equals("SOUTH AFRICA")) {
provinceField.setText("WESTERN CAPE");
cityField.setText("CAPE TOWN");
} else if (selected.toString().equals("RWANDA")) {
provinceField.setText("KIGALI");
cityField.setText("KIGALI CITY");
} else if (selected.toString().equals("ZIMBABWE")) {
provinceField.setText("HARARE");
cityField.setText("HARARE");
}
}
public void actionPerformed(ActionEvent event) {
if (event.getActionCommand().equals("BACK")) {
PatientPanel patient = new PatientPanel();
patient.setVisible(true);
patient.setLocation(500, 250);
dispose();
}
if (event.getActionCommand().equals("CLEAR")) {
clearFields();
}
if (event.getActionCommand().equals("SUBMIT")) {
// ValidateInput validateData = new ValidateInput(); //// input
// validation
FullDetails mydetails = new FullDetails();
System.out.println("gtmtfsgsdg");
try {
if (!ValidateInput.validateFirstName(nameField.getText())) {
System.out.println("youtube");
String message = String
.format("Invalid Format!!! NAME must only be one word");
JOptionPane.showMessageDialog(null, message, "ERROR",
JOptionPane.ERROR_MESSAGE);
} else {
mydetails.setFirstName(nameField.getText());
if (!ValidateInput.validateSurName(snameField.getText())) {
String msg = String
.format("Invalid Format!!! SURNAME must only be one word");
JOptionPane.showMessageDialog(null, msg, "ERROR",
JOptionPane.ERROR_MESSAGE);
} else {
mydetails.setSurname(snameField.getText());
}
}
} catch (Exception e) {
String msg = String
.format("Invalid input. Please make sure that you have filled every text fields!!! Please enter a correct one");
JOptionPane.showMessageDialog(null, msg, "ERROR",
JOptionPane.ERROR_MESSAGE);
}
}
}
private static void createAndShowGui() {
NewPatient gui = new NewPatient();
gui.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
gui.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
class ValidateInput {
public static boolean validateFirstName(String firstName) {
return firstName.matches("[a-zA-Z]*");
}
public static boolean validateSurName(String surname) {
return surname.matches("[A-zA-z]+(['-][a-zA-Z]+)*");
}
public static boolean validateInitial(String initial) {
return initial.matches("[A-Z]*");
}
}
class FullDetails {
// !! These fields should not be static
private static String firstName;
private static String surname;
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getFirstName() {
return firstName;
}
public void setSurname(String surname) {
this.surname = surname;
}
public String getSurname() {
return surname;
}
public static String getSurnam() {
return surname;
}
}
//!! a bare bones class to allow your code to compile
class PatientPanel extends JPanel {
public PatientPanel() {
add(new JLabel("Patient Panel"));
setBorder(BorderFactory.createTitledBorder("Patient Panel"));
}
}
编辑
一个小的示例程序，展示了我已经讨论过的一些事情
import java.awt.GridLayout;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import javax.swing.*;
import javax.swing.text.JTextComponent;
@SuppressWarnings("serial")
// I try to gear my GUI's towards creation of JPanels, not JFrames
// I then can put the panel into a JFrame or into something else if desired
public class SimpleGui extends JPanel {
private JTextField firstNameField = new JTextField(10);
private JTextField lastNameField = new JTextField(10);
private JTextComponent[] textComponents = {firstNameField, lastNameField};
private DefaultListModel<SimpleDetails> detailsListModel = new DefaultListModel<>();
private JList<SimpleDetails> detailsList = new JList<>(detailsListModel);
public SimpleGui() {
JPanel dataEntryPanel = new JPanel();
dataEntryPanel.add(new JLabel("First Name:"));
dataEntryPanel.add(firstNameField);
dataEntryPanel.add(Box.createHorizontalStrut(15)); // add space
dataEntryPanel.add(new JLabel("Last Name:"));
dataEntryPanel.add(lastNameField);
JPanel buttonPanel = new JPanel(new GridLayout(1, 0, 5, 0));
buttonPanel.add(new JButton(new ClearAction("Clear", KeyEvent.VK_C)));
buttonPanel.add(new JButton(new SubmitAction("Submit", KeyEvent.VK_S)));
buttonPanel.add(new JButton(new ExitAction("Exit", KeyEvent.VK_X)));
JPanel detailsPanel = new JPanel();
detailsList.setPrototypeCellValue(new SimpleDetails("AAAAAAAAAAAA", "BBBBBBBBBBBB"));
detailsList.setVisibleRowCount(12);
JScrollPane detailsScrollPane = new JScrollPane(detailsList);
detailsScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
detailsPanel.add(detailsScrollPane);
setLayout(new BoxLayout(this, BoxLayout.PAGE_AXIS));
add(detailsPanel);
add(dataEntryPanel);
add(buttonPanel);
}
public void clearTextFields() {
for (JTextComponent jTextComponent : textComponents) {
jTextComponent.setText("");
}
}
private class SubmitAction extends AbstractAction {
public SubmitAction(String name, int mnemonic) {
super(name);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e) {
String firstName = firstNameField.getText();
String lastName = lastNameField.getText();
// validate input here or after creating details object
// if valid, then
// create your details object
SimpleDetails simpleDetails = new SimpleDetails(firstName, lastName);
if (Validate.test(simpleDetails)) {
// and then DO something with it.
// Here I add it to a JList
detailsListModel.addElement(simpleDetails);
} else {
// notify user that data is bad
// consider clearing the GUI
clearTextFields();
}
}
}
private class ClearAction extends AbstractAction {
public ClearAction(String name, int mnemonic) {
super(name);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e) {
clearTextFields();
}
}
private class ExitAction extends AbstractAction {
public ExitAction(String name, int mnemonic) {
super(name);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e) {
// clean up an problems
Window win = SwingUtilities.getWindowAncestor(SimpleGui.this);
win.dispose();
}
}
private static void createAndShowGui() {
SimpleGui mainPanel = new SimpleGui();
JFrame frame = new JFrame("SimpleGui");
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String[] args) {
// so that the program runs on the Swing event thread
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
class SimpleDetails {
private String firstName;
private String lastName;
public SimpleDetails(String firstName, String lastName) {
this.firstName = firstName;
this.lastName = lastName;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
@Override
public String toString() {
return lastName + ", " + firstName;
}
}
class Validate {
public static boolean test(SimpleDetails simpleDetails) {
if (simpleDetails.getFirstName().trim().isEmpty()) {
return false;
}
if (simpleDetails.getLastName().trim().isEmpty()) {
return false;
}
// default, has passed all tests
return true;
}
}
导入java.awt.GridLayout；
导入java.awt.Window；
导入java.awt.event.ActionEvent；
导入java.awt.event.KeyEvent；
导入javax.swing.*；
导入javax.swing.text.JTextComponent；
@抑制警告（“串行”）
//我试图让我的GUI面向创建JPanel，而不是JFrames
//然后，如果需要，我可以将面板放入JFrame或其他东西中
公共类SimpleGui扩展了JPanel{
私有JTextField firstNameField=新JTextField（10）；
私有JTextField lastNameField=新JTextField（10）；
私有JTextComponent[]textComponents={firstNameField，lastNameField}；
private DefaultListModel detailsListModel=新的DefaultListModel（）；
私有JList detailsList=新JList（detailsListModel）；
公共SimpleGui（）{
JPanel dataEntryPanel=newjpanel（）；
添加（新的JLabel（“名字：”）；
dataEntryPanel.add（firstNameField）；
dataEntryPanel.add（Box.createHorizontalStruct（15））；//添加空间
添加（新的JLabel（“姓氏”）；
添加（lastNameField）；
JPanel buttonPanel=新的JPanel（新的网格布局（1,0,5,0））；
add（newjbutton（newclearaction（“Clear”，KeyEvent.VK_C））；
add（newjbutton（newsubmitAction（“Submit”，KeyEvent.VK_））；
add（newjbutton（newexitAction（“Exit”，KeyEvent.VK_X））；
JPanel detailsPanel=新的JPanel（）；
detailsList.setPrototypeCellValue（新的SimpleDetails（“aaaaaaaaaa”，“bbbbbbbbbb”）；
detailsList.setVisibleRowCount（12）；
JScrollPane detailsScrollPane=新的JScrollPane（detailsList）；
detailsScrollPane.setVerticalScrollBarPolicy（JScrollPane.VERTICAL\u SCROLLBAR\u ALWAYS）；
detailsPanel.add（detailsScrollPane）；
setLayout（新的BoxLayout（这是BoxLayout.PAGE_轴））；
添加（详细信息spanel）；
添加（dataEntryPanel）；
添加（按钮面板）；
}
public void clearTextFields（）{
for（JTextComponent JTextComponent:textComponents）{
jTextComponent.setText（“”）；
}
}
私有类SubmitAction扩展了AbstractAction{
公共提交（字符串名称，int助记符）{
超级（姓名）；
putValue（助记符键，助记符）；
}
@凌驾
已执行的公共无效操作（操作事件e）{
String firstName=firstNameField.getText（）；
字符串lastName=lastNameField.getText（）；
//在此处或创建详细信息对象后验证输入
//如果有效，则
//创建您的详细信息对象
SimpleDetails SimpleDetails=新的SimpleDetails（名字，姓氏）；
if（Validate.test（simpleDetails））{
//然后用它做点什么。
//在这里，我将其添加到JList
detailsModel.addElement（simpleDetails）；
}否则{
//通知用户数据已损坏
/考虑清除GUI
clearTextFields（）；
}
}
}
私有类ClearAction扩展了AbstractAction{
公共ClearAction（字符串名，int助记符）{
超级（姓名）；
putValue（助记符键，助记符）；
}
@凌驾
已执行的公共无效操作（操作事件e）{
clearTextFields（）；
}
}
私有类ExitAction扩展了AbstractAction{
公共ExitAction（字符串名，int助记符）{
超级（姓名）；
putValue（助记符键，助记符）；
}
@凌驾
已执行的公共无效操作（操作事件e）{
//解决问题
Window win=SwingUtilities.getWindow祖先（SimpleGui.this）；
win.dispose（）；
}
}
私有静态void createAndShowGui（）{
SimpleGui主面板=新SimpleG