Java 多态性vs重写vs重载
就Java而言，当有人问： 什么是多态性 重载或覆盖是可以接受的答案吗 我想还有比这更重要的一点 如果您有一个抽象基类，它定义了一个没有实现的方法，并且您在子类中定义了该方法，那么它仍然是重写的吗Java 多态性vs重写vs重载,java,oop,polymorphism,overloading,overriding,Java,Oop,Polymorphism,Overloading,Overriding,就Java而言，当有人问： 什么是多态性 重载或覆盖是可以接受的答案吗 我想还有比这更重要的一点 如果您有一个抽象基类，它定义了一个没有实现的方法，并且您在子类中定义了该方法，那么它仍然是重写的吗 我认为重载肯定不是正确的答案。术语重载是指具有相同名称的多个版本，通常是具有不同参数列表的方法 public int DoSomething(int objectId) { ... } public int DoSomething(string objectName) { ... } 因此，这些函数
我认为重载肯定不是正确的答案。术语重载是指具有相同名称的多个版本，通常是具有不同参数列表的方法
public int DoSomething(int objectId) { ... }
public int DoSomething(string objectName) { ... }
覆盖通常是指多态性，正如您在问题中所描述的那样，重载不是答案是正确的
两者都不是压倒一切的。重写是获得多态性的方法。多态性是对象根据其类型改变行为的能力。当显示多态性的对象的调用方不知道该对象是什么特定类型时，这一点得到了最好的证明。重载是指定义了两个名称相同但参数不同的方法 重写是指通过子类中具有相同名称的函数更改基类的行为 所以多态性与重写相关，但实际上与重载无关
然而，如果有人对“什么是多态性？”这个问题给了我一个简单的“覆盖”回答，我会要求进一步的解释。多态性是一个对象以多种形式出现的能力。这涉及到使用继承和虚拟函数来构建可交换的对象族。基类包含虚拟函数的原型，可能未实现，或者根据应用程序的要求使用默认实现，而不同的派生类都以不同的方式实现它们以影响不同的行为。经典的例子是，狗和猫都是动物，动物有makeNoise方法。我可以遍历一组动物，对它们调用makeNoise，并期望它们在那里执行各自的实现 调用代码不必知道它们是什么特定的动物
这就是我所认为的多态性。以下是pseudo-C#/Java中多态性的一个示例： Main函数不知道动物的类型，取决于MakeNoise（）方法的特定实现行为
编辑：看来布莱恩赢了我一拳。有趣的是，我们用了同样的例子。但是上面的代码应该有助于澄清这些概念。重写和重载都用于实现多态性 你可以在一个类中有一个方法 在一个或多个数据库中被覆盖的 更多的子类。这种方法确实有效 不同的东西取决于哪个 类用于实例化一个对象
abstract class Beverage {
boolean isAcceptableTemperature();
}
class Coffee extends Beverage {
boolean isAcceptableTemperature() {
return temperature > 70;
}
}
class Wine extends Beverage {
boolean isAcceptableTemperature() {
return temperature < 10;
}
}
int countStuff(List stuff) {
return stuff.size();
}
List myStuff = new MyTotallyAwesomeList();
int result = countStuff(myStuff);
int countStuff(LinkedList stuff) {...}
int countStuff(ArrayList stuff) {...}
int countStuff(MyTotallyAwesomeList stuff) {...}
etc...
编译器将选择countStuff（）的正确版本以匹配参数。多态性与语言使用单个接口统一处理不同对象的能力有关；因此，它与重写相关，因此接口（或基类）是多态的，实现者是重写的对象（同一类的两个面）
无论如何，两个术语的差异最好用其他语言来解释，例如C++：C++中的多态对象如果基函数是虚的，则作为java对应的，但是如果方法不是虚的，则代码跳跃是静态解析的，而在运行时没有检测到真正的类型，所以多态性包括对象根据用于访问它的接口的不同而表现出不同行为的能力；让我以伪代码为例：
class animal {
public void makeRumor(){
print("thump");
}
}
class dog extends animal {
public void makeRumor(){
print("woff");
}
}
animal a = new dog();
dog b = new dog();
a.makeRumor() -> prints thump
b.makeRumor() -> prints woff
由于a和b指的是类dog多态性是一个类实例在其继承树中表现为另一个类的实例（通常是其祖先类之一）的能力。例如，在Java中，所有类都从对象继承。因此，您可以创建Object类型的变量，并为其指定任何类的实例 重写是发生在从另一个类继承的类中的一种函数类型。重写函数“替换”从基类继承的函数，但这样做的方式是，即使其类的实例通过多态性假装为不同的类型，也会调用该函数。参考前面的示例，您可以定义自己的类并重写toString（）函数。因为此函数是从对象继承的，所以如果将此类的实例复制到对象类型变量中，它仍然可用。通常，如果你打电话给toString
int countStuff(LinkedList stuff) {...}
int countStuff(ArrayList stuff) {...}
int countStuff(MyTotallyAwesomeList stuff) {...}
etc...
class animal {
public void makeRumor(){
print("thump");
}
}
class dog extends animal {
public void makeRumor(){
print("woff");
}
}
animal a = new dog();
dog b = new dog();
a.makeRumor() -> prints thump
b.makeRumor() -> prints woff
a.makeRumor() -> prints thump
b.makeRumor() -> prints woff
public abstract class Human{
...
public abstract void goPee();
}
public class Male extends Human{
...
@Override
public void goPee(){
System.out.println("Stand Up");
}
}
public class Female extends Human{
...
@Override
public void goPee(){
System.out.println("Sit Down");
}
}
public static void main(String[] args){
ArrayList<Human> group = new ArrayList<Human>();
group.add(new Male());
group.add(new Female());
// ... add more...
// tell the class to take a pee break
for (Human person : group) person.goPee();
}
Stand Up
Sit Down
...
public void See(Friend)
{
System.out.println("Talk");
}
public void See(Enemy)
{
System.out.println("Run");
}
import java.io.IOException;
class Super {
protected Super getClassName(Super s) throws IOException {
System.out.println(this.getClass().getSimpleName() + " - I'm parent");
return null;
}
}
class SubOne extends Super {
@Override
protected Super getClassName(Super s) {
System.out.println(this.getClass().getSimpleName() + " - I'm Perfect Overriding");
return null;
}
}
class SubTwo extends Super {
@Override
protected Super getClassName(Super s) throws NullPointerException {
System.out.println(this.getClass().getSimpleName() + " - I'm Overriding and Throwing Runtime Exception");
return null;
}
}
class SubThree extends Super {
@Override
protected SubThree getClassName(Super s) {
System.out.println(this.getClass().getSimpleName()+ " - I'm Overriding and Returning SubClass Type");
return null;
}
}
class SubFour extends Super {
@Override
protected Super getClassName(Super s) throws IOException {
System.out.println(this.getClass().getSimpleName()+ " - I'm Overriding and Throwing Narrower Exception ");
return null;
}
}
class SubFive extends Super {
@Override
public Super getClassName(Super s) {
System.out.println(this.getClass().getSimpleName()+ " - I'm Overriding and have broader Access ");
return null;
}
}
class SubSix extends Super {
public Super getClassName(Super s, String ol) {
System.out.println(this.getClass().getSimpleName()+ " - I'm Perfect Overloading ");
return null;
}
}
class SubSeven extends Super {
public Super getClassName(SubSeven s) {
System.out.println(this.getClass().getSimpleName()+ " - I'm Perfect Overloading because Method signature (Argument) changed.");
return null;
}
}
public class Test{
public static void main(String[] args) throws Exception {
System.out.println("Overriding\n");
Super s1 = new SubOne(); s1.getClassName(null);
Super s2 = new SubTwo(); s2.getClassName(null);
Super s3 = new SubThree(); s3.getClassName(null);
Super s4 = new SubFour(); s4.getClassName(null);
Super s5 = new SubFive(); s5.getClassName(null);
System.out.println("Overloading\n");
SubSix s6 = new SubSix(); s6.getClassName(null, null);
s6 = new SubSix(); s6.getClassName(null);
SubSeven s7 = new SubSeven(); s7.getClassName(s7);
s7 = new SubSeven(); s7.getClassName(new Super());
}
}
import java.util.HashMap;
abstract class Game implements Runnable{
protected boolean runGame = true;
protected Player player1 = null;
protected Player player2 = null;
protected Player currentPlayer = null;
public Game(){
player1 = new Player("Player 1");
player2 = new Player("Player 2");
currentPlayer = player1;
initializeGame();
}
/* Type 1: Let subclass define own implementation. Base class defines abstract method to force
sub-classes to define implementation
*/
protected abstract void initializeGame();
/* Type 2: Sub-class can change the behaviour. If not, base class behaviour is applicable */
protected void logTimeBetweenMoves(Player player){
System.out.println("Base class: Move Duration: player.PlayerActTime - player.MoveShownTime");
}
/* Type 3: Base class provides implementation. Sub-class can enhance base class implementation by calling
super.methodName() in first line of the child class method and specific implementation later */
protected void logGameStatistics(){
System.out.println("Base class: logGameStatistics:");
}
/* Type 4: Template method: Structure of base class can't be changed but sub-class can some part of behaviour */
protected void runGame() throws Exception{
System.out.println("Base class: Defining the flow for Game:");
while ( runGame) {
/*
1. Set current player
2. Get Player Move
*/
validatePlayerMove(currentPlayer);
logTimeBetweenMoves(currentPlayer);
Thread.sleep(500);
setNextPlayer();
}
logGameStatistics();
}
/* sub-part of the template method, which define child class behaviour */
protected abstract void validatePlayerMove(Player p);
protected void setRunGame(boolean status){
this.runGame = status;
}
public void setCurrentPlayer(Player p){
this.currentPlayer = p;
}
public void setNextPlayer(){
if ( currentPlayer == player1) {
currentPlayer = player2;
}else{
currentPlayer = player1;
}
}
public void run(){
try{
runGame();
}catch(Exception err){
err.printStackTrace();
}
}
}
class Player{
String name;
Player(String name){
this.name = name;
}
public String getName(){
return name;
}
}
/* Concrete Game implementation */
class Chess extends Game{
public Chess(){
super();
}
public void initializeGame(){
System.out.println("Child class: Initialized Chess game");
}
protected void validatePlayerMove(Player p){
System.out.println("Child class: Validate Chess move:"+p.getName());
}
protected void logGameStatistics(){
super.logGameStatistics();
System.out.println("Child class: Add Chess specific logGameStatistics:");
}
}
class TicTacToe extends Game{
public TicTacToe(){
super();
}
public void initializeGame(){
System.out.println("Child class: Initialized TicTacToe game");
}
protected void validatePlayerMove(Player p){
System.out.println("Child class: Validate TicTacToe move:"+p.getName());
}
}
public class Polymorphism{
public static void main(String args[]){
try{
Game game = new Chess();
Thread t1 = new Thread(game);
t1.start();
Thread.sleep(1000);
game.setRunGame(false);
Thread.sleep(1000);
game = new TicTacToe();
Thread t2 = new Thread(game);
t2.start();
Thread.sleep(1000);
game.setRunGame(false);
}catch(Exception err){
err.printStackTrace();
}
}
}
Child class: Initialized Chess game
Base class: Defining the flow for Game:
Child class: Validate Chess move:Player 1
Base class: Move Duration: player.PlayerActTime - player.MoveShownTime
Child class: Validate Chess move:Player 2
Base class: Move Duration: player.PlayerActTime - player.MoveShownTime
Base class: logGameStatistics:
Child class: Add Chess specific logGameStatistics:
Child class: Initialized TicTacToe game
Base class: Defining the flow for Game:
Child class: Validate TicTacToe move:Player 1
Base class: Move Duration: player.PlayerActTime - player.MoveShownTime
Child class: Validate TicTacToe move:Player 2
Base class: Move Duration: player.PlayerActTime - player.MoveShownTime
Base class: logGameStatistics:
import java.util.Scanner;
class VolumeControllerV1 {
private int value;
int get() {
return value;
}
void set(int value) {
System.out.println("Old value of VolumeController \t"+this.value);
this.value = value;
System.out.println("New value of VolumeController \t"+this.value);
}
void adjust(int value) {
int temp = this.get();
if(((value > 0) && (temp >= 100)) || ((value < 0) && (temp <= 0))) {
System.out.println("Can not adjust any further");
return;
}
this.set(temp + value);
}
}
class BrightnessControllerV1 {
private int value;
int get() {
return value;
}
void set(int value) {
System.out.println("Old value of BrightnessController \t"+this.value);
this.value = value;
System.out.println("New value of BrightnessController \t"+this.value);
}
void adjust(int value) {
int temp = this.get();
if(((value > 0) && (temp >= 100)) || ((value < 0) && (temp <= 0))) {
System.out.println("Can not adjust any further");
return;
}
this.set(temp + value);
}
}
class ColourControllerV1 {
private int value;
int get() {
return value;
}
void set(int value) {
System.out.println("Old value of ColourController \t"+this.value);
this.value = value;
System.out.println("New value of ColourController \t"+this.value);
}
void adjust(int value) {
int temp = this.get();
if(((value > 0) && (temp >= 100)) || ((value < 0) && (temp <= 0))) {
System.out.println("Can not adjust any further");
return;
}
this.set(temp + value);
}
}
/*
* There can be n number of controllers
* */
public class TvApplicationV1 {
public static void main(String[] args) {
VolumeControllerV1 volumeControllerV1 = new VolumeControllerV1();
BrightnessControllerV1 brightnessControllerV1 = new BrightnessControllerV1();
ColourControllerV1 colourControllerV1 = new ColourControllerV1();
OUTER: while(true) {
Scanner sc=new Scanner(System.in);
System.out.println(" Enter your option \n Press 1 to increase volume \n Press 2 to decrease volume");
System.out.println(" Press 3 to increase brightness \n Press 4 to decrease brightness");
System.out.println(" Press 5 to increase color \n Press 6 to decrease color");
System.out.println("Press any other Button to shutdown");
int button = sc.nextInt();
switch (button) {
case 1: {
volumeControllerV1.adjust(5);
break;
}
case 2: {
volumeControllerV1.adjust(-5);
break;
}
case 3: {
brightnessControllerV1.adjust(5);
break;
}
case 4: {
brightnessControllerV1.adjust(-5);
break;
}
case 5: {
colourControllerV1.adjust(5);
break;
}
case 6: {
colourControllerV1.adjust(-5);
break;
}
default:
System.out.println("Shutting down...........");
break OUTER;
}
}
}
}
import java.util.Scanner;
class VolumeControllerV2 {
private int defaultValue = 25;
private int value;
int getDefaultValue() {
return defaultValue;
}
int get() {
return value;
}
void set(int value) {
System.out.println("Old value of VolumeController \t"+this.value);
this.value = value;
System.out.println("New value of VolumeController \t"+this.value);
}
void adjust(int value) {
int temp = this.get();
if(((value > 0) && (temp >= 100)) || ((value < 0) && (temp <= 0))) {
System.out.println("Can not adjust any further");
return;
}
this.set(temp + value);
}
}
class BrightnessControllerV2 {
private int defaultValue = 50;
private int value;
int get() {
return value;
}
int getDefaultValue() {
return defaultValue;
}
void set(int value) {
System.out.println("Old value of BrightnessController \t"+this.value);
this.value = value;
System.out.println("New value of BrightnessController \t"+this.value);
}
void adjust(int value) {
int temp = this.get();
if(((value > 0) && (temp >= 100)) || ((value < 0) && (temp <= 0))) {
System.out.println("Can not adjust any further");
return;
}
this.set(temp + value);
}
}
class ColourControllerV2 {
private int defaultValue = 40;
private int value;
int get() {
return value;
}
int getDefaultValue() {
return defaultValue;
}
void set(int value) {
System.out.println("Old value of ColourController \t"+this.value);
this.value = value;
System.out.println("New value of ColourController \t"+this.value);
}
void adjust(int value) {
int temp = this.get();
if(((value > 0) && (temp >= 100)) || ((value < 0) && (temp <= 0))) {
System.out.println("Can not adjust any further");
return;
}
this.set(temp + value);
}
}
class ResetFunctionV2 {
private VolumeControllerV2 volumeControllerV2 ;
private BrightnessControllerV2 brightnessControllerV2;
private ColourControllerV2 colourControllerV2;
ResetFunctionV2(VolumeControllerV2 volumeControllerV2, BrightnessControllerV2 brightnessControllerV2, ColourControllerV2 colourControllerV2) {
this.volumeControllerV2 = volumeControllerV2;
this.brightnessControllerV2 = brightnessControllerV2;
this.colourControllerV2 = colourControllerV2;
}
void onReset() {
volumeControllerV2.set(volumeControllerV2.getDefaultValue());
brightnessControllerV2.set(brightnessControllerV2.getDefaultValue());
colourControllerV2.set(colourControllerV2.getDefaultValue());
}
}
/*
* so on
* There can be n number of controllers
*
* */
public class TvApplicationV2 {
public static void main(String[] args) {
VolumeControllerV2 volumeControllerV2 = new VolumeControllerV2();
BrightnessControllerV2 brightnessControllerV2 = new BrightnessControllerV2();
ColourControllerV2 colourControllerV2 = new ColourControllerV2();
ResetFunctionV2 resetFunctionV2 = new ResetFunctionV2(volumeControllerV2, brightnessControllerV2, colourControllerV2);
OUTER: while(true) {
Scanner sc=new Scanner(System.in);
System.out.println(" Enter your option \n Press 1 to increase volume \n Press 2 to decrease volume");
System.out.println(" Press 3 to increase brightness \n Press 4 to decrease brightness");
System.out.println(" Press 5 to increase color \n Press 6 to decrease color");
System.out.println(" Press 7 to reset TV \n Press any other Button to shutdown");
int button = sc.nextInt();
switch (button) {
case 1: {
volumeControllerV2.adjust(5);
break;
}
case 2: {
volumeControllerV2.adjust(-5);
break;
}
case 3: {
brightnessControllerV2.adjust(5);
break;
}
case 4: {
brightnessControllerV2.adjust(-5);
break;
}
case 5: {
colourControllerV2.adjust(5);
break;
}
case 6: {
colourControllerV2.adjust(-5);
break;
}
case 7: {
resetFunctionV2.onReset();
break;
}
default:
System.out.println("Shutting down...........");
break OUTER;
}
}
}
}
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
abstract class ControllerV3 {
abstract void set(int value);
abstract int get();
void adjust(int value) {
int temp = this.get();
if(((value > 0) && (temp >= 100)) || ((value < 0) && (temp <= 0))) {
System.out.println("Can not adjust any further");
return;
}
this.set(temp + value);
}
abstract void setDefault();
}
class VolumeControllerV3 extends ControllerV3 {
private int defaultValue = 25;
private int value;
public void setDefault() {
set(defaultValue);
}
int get() {
return value;
}
void set(int value) {
System.out.println("Old value of VolumeController \t"+this.value);
this.value = value;
System.out.println("New value of VolumeController \t"+this.value);
}
}
class BrightnessControllerV3 extends ControllerV3 {
private int defaultValue = 50;
private int value;
public void setDefault() {
set(defaultValue);
}
int get() {
return value;
}
void set(int value) {
System.out.println("Old value of BrightnessController \t"+this.value);
this.value = value;
System.out.println("New value of BrightnessController \t"+this.value);
}
}
class ColourControllerV3 extends ControllerV3 {
private int defaultValue = 40;
private int value;
public void setDefault() {
set(defaultValue);
}
int get() {
return value;
}
void set(int value) {
System.out.println("Old value of ColourController \t"+this.value);
this.value = value;
System.out.println("New value of ColourController \t"+this.value);
}
}
class ResetFunctionV3 {
private List<ControllerV3> controllers = null;
ResetFunctionV3(List<ControllerV3> controllers) {
this.controllers = controllers;
}
void onReset() {
for (ControllerV3 controllerV3 :this.controllers) {
controllerV3.setDefault();
}
}
}
/*
* so on
* There can be n number of controllers
*
* */
public class TvApplicationV3 {
public static void main(String[] args) {
VolumeControllerV3 volumeControllerV3 = new VolumeControllerV3();
BrightnessControllerV3 brightnessControllerV3 = new BrightnessControllerV3();
ColourControllerV3 colourControllerV3 = new ColourControllerV3();
List<ControllerV3> controllerV3s = new ArrayList<>();
controllerV3s.add(volumeControllerV3);
controllerV3s.add(brightnessControllerV3);
controllerV3s.add(colourControllerV3);
ResetFunctionV3 resetFunctionV3 = new ResetFunctionV3(controllerV3s);
OUTER: while(true) {
Scanner sc=new Scanner(System.in);
System.out.println(" Enter your option \n Press 1 to increase volume \n Press 2 to decrease volume");
System.out.println(" Press 3 to increase brightness \n Press 4 to decrease brightness");
System.out.println(" Press 5 to increase color \n Press 6 to decrease color");
System.out.println(" Press 7 to reset TV \n Press any other Button to shutdown");
int button = sc.nextInt();
switch (button) {
case 1: {
volumeControllerV3.adjust(5);
break;
}
case 2: {
volumeControllerV3.adjust(-5);
break;
}
case 3: {
brightnessControllerV3.adjust(5);
break;
}
case 4: {
brightnessControllerV3.adjust(-5);
break;
}
case 5: {
colourControllerV3.adjust(5);
break;
}
case 6: {
colourControllerV3.adjust(-5);
break;
}
case 7: {
resetFunctionV3.onReset();
break;
}
default:
System.out.println("Shutting down...........");
break OUTER;
}
}
}
}
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
interface OnReset {
void setDefault();
}
interface OnStart {
void checkForDriverUpdate();
}
abstract class ControllerV4 implements OnReset,OnStart {
abstract void set(int value);
abstract int get();
void adjust(int value) {
int temp = this.get();
if(((value > 0) && (temp >= 100)) || ((value < 0) && (temp <= 0))) {
System.out.println("Can not adjust any further");
return;
}
this.set(temp + value);
}
}
class VolumeControllerV4 extends ControllerV4 {
private int defaultValue = 25;
private int value;
@Override
int get() {
return value;
}
void set(int value) {
System.out.println("Old value of VolumeController \t"+this.value);
this.value = value;
System.out.println("New value of VolumeController \t"+this.value);
}
@Override
public void setDefault() {
set(defaultValue);
}
@Override
public void checkForDriverUpdate() {
System.out.println("Checking driver update for VolumeController .... Done");
}
}
class BrightnessControllerV4 extends ControllerV4 {
private int defaultValue = 50;
private int value;
@Override
int get() {
return value;
}
@Override
void set(int value) {
System.out.println("Old value of BrightnessController \t"+this.value);
this.value = value;
System.out.println("New value of BrightnessController \t"+this.value);
}
@Override
public void setDefault() {
set(defaultValue);
}
@Override
public void checkForDriverUpdate() {
System.out.println("Checking driver update for BrightnessController .... Done");
}
}
class ColourControllerV4 extends ControllerV4 {
private int defaultValue = 40;
private int value;
@Override
int get() {
return value;
}
void set(int value) {
System.out.println("Old value of ColourController \t"+this.value);
this.value = value;
System.out.println("New value of ColourController \t"+this.value);
}
@Override
public void setDefault() {
set(defaultValue);
}
@Override
public void checkForDriverUpdate() {
System.out.println("Checking driver update for ColourController .... Done");
}
}
class ResetFunctionV4 {
private List<OnReset> controllers = null;
ResetFunctionV4(List<OnReset> controllers) {
this.controllers = controllers;
}
void onReset() {
for (OnReset onreset :this.controllers) {
onreset.setDefault();
}
}
}
class InitializeDeviceV4 {
private List<OnStart> controllers = null;
InitializeDeviceV4(List<OnStart> controllers) {
this.controllers = controllers;
}
void initialize() {
for (OnStart onStart :this.controllers) {
onStart.checkForDriverUpdate();
}
}
}
/*
* so on
* There can be n number of controllers
*
* */
public class TvApplicationV4 {
public static void main(String[] args) {
VolumeControllerV4 volumeControllerV4 = new VolumeControllerV4();
BrightnessControllerV4 brightnessControllerV4 = new BrightnessControllerV4();
ColourControllerV4 colourControllerV4 = new ColourControllerV4();
List<ControllerV4> controllerV4s = new ArrayList<>();
controllerV4s.add(brightnessControllerV4);
controllerV4s.add(volumeControllerV4);
controllerV4s.add(colourControllerV4);
List<OnStart> controllersToInitialize = new ArrayList<>();
controllersToInitialize.addAll(controllerV4s);
InitializeDeviceV4 initializeDeviceV4 = new InitializeDeviceV4(controllersToInitialize);
initializeDeviceV4.initialize();
List<OnReset> controllersToReset = new ArrayList<>();
controllersToReset.addAll(controllerV4s);
ResetFunctionV4 resetFunctionV4 = new ResetFunctionV4(controllersToReset);
OUTER: while(true) {
Scanner sc=new Scanner(System.in);
System.out.println(" Enter your option \n Press 1 to increase volume \n Press 2 to decrease volume");
System.out.println(" Press 3 to increase brightness \n Press 4 to decrease brightness");
System.out.println(" Press 5 to increase color \n Press 6 to decrease color");
System.out.println(" Press 7 to reset TV \n Press any other Button to shutdown");
int button = sc.nextInt();
switch (button) {
case 1: {
volumeControllerV4.adjust(5);
break;
}
case 2: {
volumeControllerV4.adjust(-5);
break;
}
case 3: {
brightnessControllerV4.adjust(5);
break;
}
case 4: {
brightnessControllerV4.adjust(-5);
break;
}
case 5: {
colourControllerV4.adjust(5);
break;
}
case 6: {
colourControllerV4.adjust(-5);
break;
}
case 7: {
resetFunctionV4.onReset();
break;
}
default:
System.out.println("Shutting down...........");
break OUTER;
}
}
}
}