Question

任何人都可以帮助我.. 如何获得这样的输出

方数

插入数字以获得方形值：2

数字2的平方是4

多维数据集

插入数字以获得方形值：3

3号的平方是27

现在我得到这样的输出

方数

插入数字以获得方形值：方形立方体

插入数字以获取立方体的值：2

数字2的平方是4

3

3号立方体是27

这里是我的编码

    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.util.logging.Level;
    import java.util.logging.Logger;


    class Thread_Square extends Thread{

     private int sumSquare;

     public void Thread_Square(){

             BufferedReader square = new BufferedReader(new InputStreamReader(System.in));
             System.out.println("Square Number");
             System.out.print("Insert Number to get Value of Square: ");

             String inputSquare = null;
             try {
                 inputSquare = square.readLine();
             } catch (IOException ex) {
                 Logger.getLogger(Thread_Square.class.getName()).log(Level.SEVERE, null, ex);
             }
             int numSquare = Integer.parseInt(inputSquare);

             sumSquare=numSquare*numSquare;

             System.out.println("Square of number " +numSquare +" is " +sumSquare);


      }
         public void run()
        {

            Thread_Square();


        }
    }

    class Thread_Cube extends Thread{

       public void Thread_Cube(){
          int sumCube;
             BufferedReader Cube = new BufferedReader(new InputStreamReader(System.in));
            System.out.println("Square Cube");
             System.out.print("Insert Number to get Value of Cube: ");

             String inputCube = null;
             try {
                 inputCube = Cube.readLine();
             } catch (IOException ex) {
                 Logger.getLogger(Thread_Square.class.getName()).log(Level.SEVERE, null, ex);
             }
             int numCube = Integer.parseInt(inputCube);

             sumCube=numCube*numCube*numCube;

             System.out.println("Cube of number " +numCube +" is " +sumCube);

    }

        public void run()
        {
              Thread_Cube();


        }
    }

    class Thread_Question1 {

        public static void main(String[] args) throws IOException {


            Thread_Square obj1 = new Thread_Square();
            obj1.start();


           Thread_Cube obj2 = new Thread_Cube();
            obj2.start();


        }
    }

Answer 1

你有两个同时并行运行的并发线程。对于第一个输出，您需要使用该流程一个线程，或者在完成第一个线程后强制第二个线程启动。看到这个：

 Thread_Square obj1 = new Thread_Square();
 obj1.start();

 obj1.join();

 Thread_Cube obj2 = new Thread_Cube();
 obj2.start();

Answer 2

等待使用join()的第一个主题完成：

public static void main(String[ ] args) throws IOException, InterruptedException {

            MultiThread obj1 = new MultiThread();
            obj1.start();
            obj1.join ();

           ThreadCube obj2 = new ThreadCube();
            obj2.start();



        }

如何先完成Thread_Square然后再完成Thread_Cube

2 个答案: