EduCoder Java程序设计---Java高级特性 - 多线程基础（2）常用函数

超、凢脫俗 2023-09-29 03:18 22阅读 0赞

**第1关 [线程的状态与调度][Link 1]**

![b067ee64d5624298bcc827609663b335.png][]

![0f9c341957ae4700afb63dd9596fe6c6.png][]

**第2关 [常用函数（一）][Link 2]**

package step2;
    
    import java.util.Scanner;
    
    public class Task {
    
    	public static void main(String[] args) {
    		Scanner sc = new Scanner(System.in);
    		int num = sc.nextInt();
    		//请在此添加实现代码
         /********** Begin **********/
    	Thread t = new MyThread(num);
    	t.start();
        /********** End **********/
    	}
    }
    		//请在此添加实现代码
       /********** Begin **********/
    class MyThread  extends Thread {
    	private int num;
    
    	public MyThread(int num){
    		this.num = num;
    	}
    	public void run () {
    		int a = 1 , b = 1 , sum = 1;
    		for(int i = 1 ; i < num-1 ; i++){
    			sum = a + b ;
    			b = a;
    			a = sum;
    		}
    
    		System.out.println("子线程计算结果为："+sum);
    
    	}
    
    }
    
       /********** End **********/

**第3关 [常用函数（二）][Link 3]**

package step3;
    
    public class MyThread implements Runnable {   
    	   //请在此添加实现代码
    /********** Begin **********/
        private String name;
        private Object prev;
        private Object self;
    
        private MyThread(String name , Object prev ,Object self){
            this.name = name;
            this.prev = prev;
            this.self = self;
        }
    
        public static void main(String[] args) throws Exception {   
            Object a = new Object();
            Object b = new Object();
            Object c = new Object();
            MyThread ta = new MyThread("E",c,a);
            MyThread tb = new MyThread("D",a,b);
            MyThread tc = new MyThread("U",b,c);
    
            new Thread(ta).start();
            Thread.sleep(100);
            new Thread(tb).start();
            Thread.sleep(100);
            new Thread(tc).start();
            Thread.sleep(100);
        }   
        public void run(){
            int count = 5;
            while(count > 0){
                synchronized(prev){
                    synchronized(self){
                        System.out.print(name);
                        count--;
                        self.notify();
                    }
                    try{
                        prev.wait();
                    }
                    catch(InterruptedException e){
                        e.printStackTrace();
                    }
                }
            }
            System.exit(0);
        }
    
    
    /********** End **********/ 
       
    }

[Link 1]: https://www.educoder.net/tasks/cviejbm286s5
[b067ee64d5624298bcc827609663b335.png]: https://img-blog.csdnimg.cn/b067ee64d5624298bcc827609663b335.png
[0f9c341957ae4700afb63dd9596fe6c6.png]: https://img-blog.csdnimg.cn/0f9c341957ae4700afb63dd9596fe6c6.png
[Link 2]: https://www.educoder.net/tasks/pb2mc5k89hun
[Link 3]: https://www.educoder.net/tasks/2ifxkjy7fc48