run( ) 与 start( )

来源：互联网发布：姚明cba数据编辑：程序博客网时间：2024/05/16 11:21

看一下下面的代码：

class Father implements Runnable
{
       private String name;
       private int times;

      Father(String name,int times)
     {
         this.name  = name;
         this.times = times;
     }

     public void run()
     {
         try
         {
            for(int i = 0;i<this.times;i++)
            {
               Thread.sleep(1000);
              System.out.println(i+ "I'm father.my name"+this.name);
            }
         }
         catch(Exception e)
        {
             System.out.println(e.toString());
        }

    }
}

class Child implements Runnable
{
       private String name;
       private int times;

       Child(String name,int times)
       {
            this.name  = name;
            this.times = times;
       }

       public void run()
      {
           try
           {
               for(int i = 0;i<this.times;i++)
               {
                   Thread.sleep(1000);
                   System.out.println(i+

                      "I'm child.My name is "+this.name);
               }
           }
           catch(Exception e)
          {
               System.out.println(e.toString());
          }

     }
}

public class Filiation
{
      public static void main(String [] args)
      {
           /*
           Thread t1 = new Thread(new Father("ffff",10));
           Thread t2 = new Thread(new Child("ccccc",10));
           t1.start();//创建一个新的线程,并运行 Father 的run()
           t2.start();//创建一个新的线程,并运行 Child 的run()
           */


           Father f = new Father("father",5);
           Child  c = new Child("child",5);
           f.run(); //并没有创建一个新的进程
           c.run(); //并没有创建一个新的进程
      }
}

代码很简单：有三个类。Father、Child 实现了Runnable接口，类Fatcher和类Child中的run() 方法是先睡眠 1秒，然后输出显示相关信息。其它输出结果是：

0 I'm father .my name is father

1 I'm father .my name is father

2 I'm father .my name is father

3 I'm father .my name is father

4 I'm father .my name is father

0 I'm child . My name is child

1 I'm child . My name is child

2 I'm child . My name is child

3 I'm child . My name is child

4 I'm child . My name is child

而将main()中有内容变为：

    Thread t1 = new Thread(new Father("ffff",10));
    Thread t2 = new Thread(new Child("ccccc",10));
    t1.start();//创建一个新的线程,并运行 Father 的run()
    t2.start();//创建一个新的线程,并运行 Child 的run()

    /*
    Father f = new Father("father",5);
    Child  c = new Child("child",5);
    f.run();
    c.run();
    */

编译后，执行得如下结果：