创建多线程

下面程序 创建了三个子线程

 

 

public class thread {
 public static void main(String args[]){
  new NewThread("One");
  new NewThread("Two");
  new NewThread("Three");
  try{
   Thread.sleep(10000);
  }
  catch(InterruptedException e){
   System.out.println("main thread interrupted");
  }
  System.out.println("main thread exiting");
 }
}
//creat a multiple thread
class NewThread implements Runnable{
 String name;      //name of thread
 Thread t;  
 NewThread(String threadname){
  name=threadname;
  t=new Thread(this ,name);
  System.out.println("New thread :"+t);
  t.start();
 }
 //@Override
 public void run() {
  // TODO Auto-generated method stub
  try{
   for(int i=5;i>0;i--)
   {
    System.out.println(name+":"+i);
    Thread.sleep(1000);
   }
  }
  catch(InterruptedException e){
   System.out.println(name+"Interrupted");
  }
  System.out.println(name+"exiting");
 }
}

 

 

程序运行结果如下：

New thread :Thread[One,5,main]
New thread :Thread[Two,5,main]
One:5
New thread :Thread[Three,5,main]
Three:5
Two:5
One:4
Two:4
Three:4
One:3
Two:3
Three:3
One:2
Three:2
Two:2
One:1
Two:1
Three:1
Oneexiting
Threeexiting
Twoexiting
main thread exiting

 

如上所见，一旦启动程序，所有三个子线程将共享cpu。应注意main（）方法部分程序中对语句sleep（10000）的调用，这使主线程睡眠10秒，以确保它最后结束