java.lang.ThreadGroup.destroy()%uA0方法破坏该线程组及其所有子组。此线程组必须为空，表明已被该线程组中的所有线程都停止。
声明
以下是java.lang.ThreadGroup.destroy()方法的声明
public final void destroy()
参数
-
NA
返回值
此方法不返回任何值。
异常
-
IllegalThreadStateException%uA0-- 如果该线程组不是空的，或者如果该线程组已经被破坏了。
-
SecurityException%uA0-- 如果当前线程无法修改此线程组。
例子
下面的例子显示java.lang.ThreadGroup.destroy()方法的使用。
package com.yiibai import java.lang.* public class ThreadGroupDemo implements Runnable { public static void main(String[] args) { ThreadGroupDemo tg = new ThreadGroupDemo() tg.func() } public void func() { try { // create a parent ThreadGroup ThreadGroup pGroup = new ThreadGroup("Parent ThreadGroup") // create a child ThreadGroup for parent ThreadGroup ThreadGroup cGroup = new ThreadGroup(pGroup, "Child ThreadGroup") // create a thread Thread t1 = new Thread(pGroup, this) System.out.println("Starting " + t1.getName() + "...") t1.start() // create another thread Thread t2 = new Thread(cGroup, this) System.out.println("Starting " + t2.getName() + "...") t2.start() // block until the other threads finish t1.join() t2.join() // child group destroyed cGroup.destroy() System.out.println(cGroup.getName() + " destroyed") // parent group destroyed pGroup.destroy() System.out.println(pGroup.getName() + " destroyed") } catch (InterruptedException ex) { System.out.println(ex.toString()) } } // implements run() public void run() { for(int i=0i<1000i++) { i++ } System.out.println(Thread.currentThread().getName() + " finished executing.") } }
让我们来编译和运行上面的程序，这将产生以下结果：
Starting Thread-0... Starting Thread-1... Thread-0 finished executing. Thread-1 finished executing. Child ThreadGroup destroyed Parent ThreadGroup destroyed