java.lang.Thread.yield() 方法使當前執行的線程對象來暫停並允許其他線程執行。

聲明

以下是java.lang.Thread.yield()方法的聲明

public static void yield()

參數

• NA

返回值

此方法不返回任何值。

異常

•  

例子

下麵的例子顯示java.lang.Thread.yield()方法的使用。

package com.yiibai;

import java.lang.*;

public class ThreadDemo implements Runnable {

   Thread t;

   ThreadDemo(String str) {

      t = new Thread(this, str);
      // this will call run() function
      t.start();
   }

   public void run() {

      for (int i = 0; i < 5; i++) {
         // yields control to another thread every 5 iterations
            if ((i % 5) == 0) {
               System.out.println(Thread.currentThread().getName() + "
               yielding control...");
               
               /* causes the currently executing thread object to temporarily 
               pause and allow other threads to execute */
               Thread.yield();
            }
      }

      System.out.println(Thread.currentThread().getName() + " has 
      finished executing.");
   }

   public static void main(String[] args) {
      new ThreadDemo("Thread 1");
      new ThreadDemo("Thread 2");
      new ThreadDemo("Thread 3");
   }
} 

讓我們來編譯和運行上麵的程序，這將產生以下結果：

Thread 1 is yielding control...
Thread 2 is yielding control...
Thread 3 is yielding control...
Thread 1 has finished executing.
Thread 2 has finished executing.
Thread 3 has finished executing.