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public class Jb39_Multithread
{
/*
进程：真正运行的程序，是系统进行资源分配和调度的基本单位
线程：进程中一个负责程序执行的控制单元，一个进程中可多执行路径
一个进程至少一个线程。
创建线程方式之一：
步骤：
1、定义一个类继承Thread类
2、覆盖Thread类中的run方法
3、直接创建Thread的子类对象创建线程
4、调用start方法开启线程并调用run方法开始执行
*/
public static void main ( String [ ] args )
{
Thread t1 = new Thread ( ) ;
Thread t2 = new Thread ( ) ;
Demo d1 = new Demo ( "线程1" ) ;
Demo d2 = new Demo ( "线程......二" ) ;
d1 . start ( ) ; //开启线程1,调用run方法
d2 . start ( ) ;
System . out . println ( "Hello World!" ) ; //线程三
}
}
class Demo extends Thread
{
private String name ;
Demo ( String name )
{
this . name = name ;
}
public void run ( )
{
for ( int x = 0 ; x < 9 ; x + + )
{
for ( int y = 0 ; y < 27 ; y + + )
{
}
System . out . println ( name + Thread . currentThread ( ) . getName ( ) + "..." + x ) ; //通过Thread的getName方法获取对象的名称
}
}
/* public void show()
{
for (int x=0;x<10 ;x++ )
{
for (int y=0;y<100 ;y++ )
{
System.out.println(name+"x="+x);
}
}
}*/
}
