Java中线程的创建有两种方式：
1． 通过继承Thread类，重写Thread的run()方法，将线程运行的逻辑放在其中
2． 通过实现Runnable接口，实例化Thread类
一、通过继承Thread类实现多线程
class MyThread extends Thread{
String name = null;
int ticket = 0;
public MyThread(String name){
this.name = name;
}
public synchronized void run(){
for (int i = 0; i < 5; i++) {
System.out.println(Thread.currentThread().getName()+this.name+" ticket:"+ticket++);
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
通过如下方式运行：
public static void main(String[] args) {
MyThread mThread1 = new MyThread("线程一");
MyThread mThread2 = new MyThread("线程二");
MyThread mThread3 = new MyThread("线程三");
mThread1.start();
mThread2.start();
mThread3.start();
}
运行结果如下：
Thread-1线程二 ticket:0
Thread-0线程一 ticket:0
Thread-2线程三 ticket:0
Thread-1线程二 ticket:1
Thread-0线程一 ticket:1
Thread-2线程三 ticket:1
Thread-1线程二 ticket:2
Thread-2线程三 ticket:2
Thread-0线程一 ticket:2
Thread-1线程二 ticket:3
Thread-2线程三 ticket:3
Thread-0线程一 ticket:3
Thread-1线程二 ticket:4
Thread-2线程三 ticket:4
Thread-0线程一 ticket:4
二、通过继承Runnable接口实现多线程
多线程类：
class RunThread implements Runnable{
int Counter = 0;
@Override
public synchronized void run() {
for(int i=0;i<5;i++){
System.out.println(Thread.currentThread().getName()+"count:"+Counter++);
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
实现方式：
public static void main(String[] args) {
RunThread rThread = new RunThread();
Thread t1 = new Thread(rThread,"线程一");
Thread t2 = new Thread(rThread,"线程二");
Thread t3 = new Thread(rThread,"线程三");
t1.start();
t2.start();
t3.start();
}
输出结果：
线程一count:0
线程一count:1
线程一count:2
线程一count:3
线程一count:4
线程二count:5
线程二count:6
线程二count:7
线程二count:8
线程二count:9
线程三count:10
线程三count:11
线程三count:12
线程三count:13
线程三count:14