有一个抽奖池,该抽奖池中存放了奖励的金额,该抽奖池用一个数组int[] arr = {10,5,20,50,100,200,500,800,2,80,300};创建两个抽奖箱(线程)...

女爷i 2024-04-17 16:34 72阅读 0赞

有一个抽奖池,该抽奖池中存放了奖励的金额,该抽奖池用一个数组int\[\] arr = \{10,5,20,50,100,200,500,800,2,80,300\};  
创建两个抽奖箱(线程)设置线程名称分别为“抽奖箱1”，“抽奖箱2”，随机从arr数组中获取奖项元素并打印在控制台上,格式如下:  
抽奖箱1 又产生了一个 10 元大奖  
抽奖箱2 又产生了一个 100 元大奖  
//.....

这是产生抽奖的线程代码

package com.qf.xc;
    
    public class ChouJiangxc implements Runnable {
    	int num;
    	
    	public ChouJiangxc(int num) {
    		super();
    		this.num = num;
    	}
    
    	@Override
    	public void run() {
    		// TODO Auto-generated method stub
    		synchronized (this) {
    			System.out.println(Thread.currentThread().getName()+"又产生了一个 "+num+" 元大奖");
    			try {
    				Thread.sleep(500);
    			} catch (InterruptedException e) {
    				// TODO Auto-generated catch block
    				e.printStackTrace();
    			}
    		}
    	}
    
    }

这是测试代码

package com.qf.test;
    
    import com.qf.xc.ChouJiangxc;
    
    public class ChouJiangTesr {
    
    	public static void main(String[] args) {
    		// TODO Auto-generated method stub
    		int[] arr = {10,5,20,50,100,200,500,800,2,80,300};
    		int count=arr.length;
    		boolean[] flags=new boolean[arr.length];//定义一个开关  默认false
    		boolean isChou=true;
    		while (true) {
    			if (count>=0) {
    				if (count==0) {
    					break;
    				}
    				int num=(int)(Math.random()*arr.length);
    				if (!flags[num]) {
    					flags[num]=true;
    					count--;
    					ChouJiangxc cJiangxc=new ChouJiangxc(arr[num]);
    					Thread t1=new Thread(cJiangxc, "抽奖箱1");
    					Thread t2=new Thread(cJiangxc, "抽奖箱2");
    					if (isChou) {
    						t1.start();
    					} else {
    						t2.start();
    					}
    					try {
    						Thread.sleep(500);
    					} catch (InterruptedException e) {
    						// TODO Auto-generated catch block
    						e.printStackTrace();
    					}
    					isChou=!isChou;
    				}
    			}
    			
    		}
    	}
    
    }

显示结果

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk0MDM0OA_size_16_color_FFFFFF_t_70][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk0MDM0OA_size_16_color_FFFFFF_t_70]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/a4ea3dd1560b4c54997dece3979ec544.png