taskthreaddemo2.java

来自「this a task Thread programming for a giv」· Java 代码 · 共 107 行

public class TaskthreadDemo2 {

  public static void main(String[] args) {

    // Create tasks
    Runnable printA = new PrintChar('a', 100);

    Runnable printB = new PrintChar('b', 100);

    Runnable print100 = new PrintNum(100);



    // Create threads
    Thread thread1 = new Thread(printA);

    Thread thread2 = new Thread(printB);

    Thread thread3 = new Thread(print100);



    // Start threads
    thread1.start();

    thread2.start();

    thread3.start();

  }

}



// The task for printing a specified character in specified times
class PrintChar implements Runnable {

  private char charToPrint; // The character to print
  private int times; // The times to repeat


  /** Construct a task with specified character and number of
   *  times to print the character
   */

  public PrintChar(char c, int t) {

    charToPrint = c;

    times = t;

  }



  /** Override the run() method to tell the system
   *  what the task to perform
   */

  public void run() {

    for (int i = 0; i < times; i++) {

      System.out.print(charToPrint);

    }

  }

}



// The task class for printing number from 1 to n for a given n
class PrintNum implements Runnable {

  private int lastNum;



  /** Construct a task for printing 1, 2, ... i */

  public PrintNum(int n) {

    lastNum = n;

  }



  /** Tell the thread how to run */

  public void run() {

    for (int i = 1; i <= lastNum; i++) {

      System.out.print(" " + i);
      Thread.yield();

    }

  }

}