Java ThreadGroup interrupt()用法及代碼示例

ThreadGroup類interrupt()方法

• interrupt() 方法在 java.lang 包中可用。
• interrupt() 方法用於停止該線程組中的所有線程。
• interrupt() 方法是一個非靜態方法，它隻能通過類對象訪問，如果我們嘗試使用類名訪問方法，那麽我們將得到一個錯誤。
• interrupt() 方法可能會在中斷該線程組中的線程時拋出異常。

用法:

    public final void interrupt();

參數：

• 它不接受任何參數。

返回值：

這個方法的返回類型是void——它什麽都不返回。

例：

// Java program to demonstrate the example 
// of void interrupt () method of ThreadGroup 

public class Interrupt implements Runnable {
    public static void main(String[] args) {
        Interrupt in = new Interrupt(); in .interrupted();
    }

    public void interrupted() {
        // Create two thread group and the named are base
        // and derived

        ThreadGroup base = new ThreadGroup("Base ThreadGroup");
        ThreadGroup derived = new ThreadGroup(base, "Derived ThreadGroup");

        // create two threads
        Thread th1 = new Thread(base, this);
        Thread th2 = new Thread(derived, this);

        // By using getName() method is to retrieve the
        // name of the thread th1
        System.out.println(th1.getName() + " " + "begins.....");

        // By using start() method is to start its execution 
        // of thread th1
        th1.start();

        //By using getName() method is to retrieve the
        // name of the thread th2
        System.out.println(th2.getName() + " " + "begins.....");


        // By using start() method is to start its execution 
        // of thread th2
        th2.start();

        try {
            th1.interrupt();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

    // Override run()
    public void run() {
        try {
            Thread.sleep(1000);
            System.out.println("We will wait till another thread execution");
        } catch (Exception ex) {
            System.out.println("Thread interrupted:" + ex.getMessage());
        }
    }

}

輸出

Thread-0 begins.....
Thread-1 begins.....
Thread interrupted:sleep interrupted
We will wait till another thread execution