public class MutliThreadDemo4 {
  public static void main(String[] args) {
    threadBlock();
    //threadPriority();
    //threadYield();
    
  }
  /**
   * 線程的阻塞
   */
  private static void threadBlock() {
    //創(chuàng)建Runnable接口實現(xiàn)類的對象
    Runnable r = () -> {
      for(int i = 0; i < 10; i++) {
        System.out.println(Thread.currentThread().getName() + ":" + i);
        //線程休眠(由運(yùn)行狀態(tài)到阻塞狀態(tài)，時間過了回到就緒態(tài)，重新爭搶)，直觀上表現(xiàn)為停頓打印
        try {
          Thread.sleep(1000);
        }catch(InterruptedException e){
          e.printStackTrace();
        }
      }
    };
    //實例化
    new Thread(r, "甲").start();  
  }
  
  /**
   * 線程的優(yōu)先級
   */
  private static void threadPriority() {

    Runnable r = () -> {
      for(int i = 0; i < 10; i++) {
        System.out.println(Thread.currentThread().getName() + ":" + i);
      }
    };
    Thread t1 = new Thread(r, "甲");
    Thread t2 = new Thread(r, "乙");
    
    //設(shè)置優(yōu)先級，必須在開始執(zhí)行（start）之前
    //設(shè)置線程的優(yōu)先級，只是修改這個線程可以去搶到CPU時間片的概率。
    //并不是優(yōu)先級高的線程一定能搶到CPU時間片
    //優(yōu)先級的設(shè)置，是一個整數(shù)(0,10]的整數(shù)，默認(rèn)是5
    t1.setPriority(10);
    t2.setPriority(1);
    
    t1.start();
    t2.start();
    
  }
  /**
   * 線程的禮讓
   */
  private static void threadYield() {  
    //線程釋放自己的CPU資源，由運(yùn)行狀態(tài)，回到就緒狀態(tài)
    //匿名內(nèi)部類
    Runnable r = new Runnable() {
      public void run() {
        for (int i = 0; i < 10; i++) {
          System.out.println(Thread.currentThread().getName() + ":" + i);
          if (i == 3) {
            Thread.yield();
          }
        }
      }
    };
    Thread thread1 = new Thread(r, "thread-1");
    Thread thread2 = new Thread(r, "thread-2");
    
    thread1.start();
    thread2.start();  
  }  
}