package youxianji.xianchen;

import java.util.MissingFormatArgumentException;

/*
 * 設置線程的優先級
 * setPriority
public final void setPriority(int newPriority)  
參數：
newPriority - 要為線程設定的優先級

Java中 三種 優先級
  static int    MAX_PRIORITY 
          線程可以具有的最高優先級。
  static int    MIN_PRIORITY 
          線程可以具有的最低優先級。
  static int    NORM_PRIORITY 
          分配給線程的默認優先級。
 
 
*/
//寫一個類去實現runnable
class YouXianJiDemo implements Runnable{
    //重寫 run 方法
    public void run(){
        //循環 5次
        for (int i = 0; i <5; i++) {
            try {Thread.sleep(500);}
            catch(Exception e){
                System.out.println(e);
            }
            //獲取當前線程
            System.out.println(Thread.currentThread().getName()+"運行"+i);
            
        }
        
    }
}
 
public class YouXianJi {
    public static void main(String[] args) {
        //YouXianJiDemo yx =new YouXianJiDemo();
        //Thread t1 =new Thread(yx,"線程a");
        Thread t1 = new Thread(new YouXianJiDemo(),"線程a");
        Thread t2 = new Thread(new YouXianJiDemo(),"線程b");
        Thread t3 = new Thread(new
 
 YouXianJiDemo(),"線程c");
        t1.setPriority(Thread.NORM_PRIORITY);
        t2.setPriority(Thread.MAX_PRIORITY);
        t3.setPriority(Thread.MIN_PRIORITY);
        //啟動線程
        t1.start();
        t2.start();
        t3.start();
        
    }

}

線程優先級