java多线程的创建方式
启动线程通过两种方式实现：
1、通过实现Runnable接口定义一个由Thread驱动的任务，后通过把自己传给Thread的构造来启动一个线程(Runnable没有返回值,如需返回值则使用Callable接口)。
@实现Runnable的一个任务
public?class?CountDown?implements?Runnable?{
????protected?int?count?=?10;
????
????public?static?int?taskCount?=?1;
????
????public?final?int?id?=?taskCount?++;
????
????@Override
????public?void?run()?{
????????//?TODO?Auto-generated?method?stub
????????while(count?--?>0)
????????{
????????????System.out.println(""+count);
????????}
????????
????????System.out.println("count?over");
????????Thread.yield();
????
????}
}
@通过把任务传给Thread的构造来启动线程
public?class?MainThread?{
????/**
?????*?@param?args
?????*/
????public?static?void?main(String[]?args)?{
????????//?TODO?Auto-generated?method?stub
????????Thread?t?=?new?Thread(new?CountDown());
????????t.start();
????????? ? ?
????}
????
}
2、直接继承自Thread来创建线程
@继承自Thread的线程
public?class?CountDown3?extends?Thread?{
????private?static?int?step?=?0;
????private?final?int?id?=?step++;
????private?int?count?=?10;
????@Override
????public?void?run()?{
????????//?TODO?Auto-generated?method?stub
????????super.run();
????????while(count--?>?0)
????????{
????????????System.out.println(count);
????????????Thread.yield();
????????????
????????}
????????
????????
????}
????
}
@启动此线程
public?class?MainThread?{
????/**
?????*?@param?args
?????*/
????public?static?void?main(String[]?args)?{
????????//?TODO?Auto-generated?method?stub
????
????????Thread?t?=?new?CountDown3();
????????t.run();
????}
????
}
