如何停止线程
1、使用stop方法强行终止线程（这个方法不推荐使用，可能会出现业务操作未执行完，线程中断了）
package com.cppdy;
class MyThread15 extends Thread{
@Override
public synchronized void run() {
while(true) {
try {
wait();
} catch (Exception e) {
}
//如果这里有非常重要的代码块，是不是就出现问题了
System.out.println("Thread run------");
}
}
}
public class ThreadDemo15 {
public static void main(String[] args) throws Exception {
MyThread15 mt = new MyThread15();
Thread thread1 = new Thread(mt);
Thread thread2 = new Thread(mt);
thread1.start();
thread2.start();
int count=0;
while(true) {
System.out.println("Main run------");
Thread.sleep(100);
if(count==30) {
thread1.stop();
thread2.stop();
break;
}
count++;
}
}
}
2、使用interrupt方法中断线程（将业务操作执行完后再中断线程）
package com.cppdy;
class MyThread15 extends Thread{
@Override
public synchronized void run() {
while(true) {
try {
wait();
} catch (Exception e) {
}
//如果这里有非常重要的代码块，是不是就出现问题了
System.out.println("Thread run------");
}
}
}
public class ThreadDemo15 {
public static void main(String[] args) throws Exception {
MyThread15 mt = new MyThread15();
Thread thread1 = new Thread(mt);
Thread thread2 = new Thread(mt);
thread1.start();
thread2.start();
int count=0;
while(true) {
System.out.println("Main run------");
Thread.sleep(100);
if(count==30) {
thread1.interrupt();
thread2.interrupt();
break;
}
count++;
}
}
}
3、使用退出标志，使线程正常退出，也就是当run方法完成后线程终止
package com.cppdy;
class MyThread15 extends Thread{
public volatile boolean flag=true;
@Override
public synchronized void run() {
while(flag) {
try {
} catch (Exception e) {
setFlag(flag);
}
System.out.println("Thread run------");
}
}
public void setFlag(boolean flag) {
this.flag=flag;
}
}
public class ThreadDemo15 {
public static void main(String[] args) throws Exception {
MyThread15 mt = new MyThread15();
Thread thread1 = new Thread(mt);
Thread thread2 = new Thread(mt);
thread1.start();
thread2.start();
int count=0;
while(true) {
System.out.println("Main run------");
Thread.sleep(100);
if(count==30) {
mt.setFlag(false);
break;
}
count++;
}
}
}