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使用内部类来将线程隐藏在类中的几种方法


class InnerThread1{
private int countDown=5;
private Inner inner;
private class Inner extends Thread{
Inner(String name) {
super(name);
start();
}

@Override
public void run() {
while(true){
try {
System.out.println(this);
if(--countDown==0)
return;
TimeUnit.MILLISECONDS.sleep(10);
} catch (InterruptedException e) {
System.out.println("interrupted");
}
}
}
public String toString(){
return getName()+":"+countDown;
}
}
public InnerThread1(String name){
inner=new Inner(name);
}
}
class InnerThread2{
private int countDown=5;
private Thread t;
public InnerThread2(String name){
t=new Thread(name){
@Override
public void run() {
while(true){
try {
System.out.println(this);
if(--countDown==0)
return;
TimeUnit.MILLISECONDS.sleep(10);
} catch (InterruptedException e) {
System.out.println("sleep() interrupted");
}
}
}
public String toString(){
return getName()+":"+countDown;
}
};
t.start();
}
}
class InnerRunnable1{
private int countDown=5;
private Inner inner;
private class Inner implements Runnable{
Thread t;
Inner(String name){
t=new Thread(this,name);
t.start();
}
@Override
public void run() {
try {
while(true) {
System.out.println(this);
if (--countDown == 0)
return;
TimeUnit.MILLISECONDS.sleep(10);
}
} catch (InterruptedException e) {
System.out.println("sleep() interrupted");
}
}
public String toString(){
return t.getName()+": "+countDown;
}
}
public InnerRunnable1(String name){
inner=new Inner(name);
}
}
class InnerRunnable2{
private int countDown=5;
private Thread t;
public InnerRunnable2(String name){
t=new Thread(new Runnable() {
@Override
public void run() {
while(true){
System.out.println(this);
if(--countDown==0)
return;
try {
TimeUnit.MILLISECONDS.sleep(10);
} catch (InterruptedException e) {
System.out.println("sleep() interrupted");
}
}
}
public String toString(){
return Thread.currentThread().getName()+": "+countDown;
}
},name);
}
}
class ThreadMethod{
private int countDown=5;
private Thread t;
private String name;
public ThreadMethod(String name){
this.name=name;
}
public void runTask(){
if(t==null){
t=new Thread(name){
@Override
public void run() {
while(true){
System.out.println(this);
if(--countDown==0)
return;
try {
TimeUnit.MILLISECONDS.sleep(10);
} catch (InterruptedException e) {
System.out.println("sleep() interrupted");
}
}
}
public String toString(){
return getName()+": "+countDown;
}
};
t.start();
}
}
}
public class ThreadVariations {
public static void main(String[] args){
new InnerThread1("InnerThread1");
new InnerThread2("InnerThread2");
new InnerRunnable1("InnerRunnable1");
new InnerRunnable2("InnerRunnable2");
new ThreadMethod("ThreadMethod").runTask();
}
}

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