System.out.println("Waiting for threads to finish."); ob1.t.join(); ob2.t.join(); } catch (InterruptedException e) { System.out.println("Main thread Interrupted"); } System.out.println("Main thread exiting."); } } 程序的部分输出如下: New thread: Thread[One,5,main] One: 15 New...
16publicclassThreadGroupDemo{publicstaticvoidmain(String[] args){// 获取当前线程及其所属的线程组ThreadcurrentThread=Thread.currentThread();ThreadGroupcurrentGroup=currentThread.getThreadGroup();// 检查当前线程是否有权限在其所在线程组下创建新的线程组currentGroup.checkAccess();// 创建新的线程组,父线程组...
步骤1: 接收关闭信号 在Java中,我们可以使用Runtime.getRuntime().addShutdownHook(Thread hook)方法来添加一个关闭钩子,这个钩子会在JVM关闭时被调用。 Runtime.getRuntime().addShutdownHook(newThread(){publicvoidrun(){// 代码将在接收到关闭信号时执行System.out.println("Received shutdown signal. Cleani...
// How long we wait for a service to finish executing. static final int SERVICE_TIMEOUT = 20*1000; // How long we wait for a service to finish executing. static final int SERVICE_BACKGROUND_TIMEOUT = SERVICE_TIMEOUT * 10; 1. 2. 3. 4. 5. 前台Service在20s内没有处理完成发生ANR。
.sleep(5);//主线程sleep5秒钟,保证thread线程能够执行sleep方法}catch(InterruptedException e){e.printStackTrace();}thread.interrupt();//主线程中断thread线程,导致sleep方法抛出InterruptedException,结束阻塞try{thread.join();}catch(InterruptedException e){e.printStackTrace();}System.out.println("finish");...
下面的线程堆栈表示当前线程正处于TIMED_WAITING状态,当前正在被挂起,时长为 参数中指定的时长,如obj.wait(2000)。因此该线程当前不消耗CPU。 "JMX server" daemon prio=6 tid=0x0ad2c800 nid=0xdec in Object.wait() [...] java.lang.Thread.State: TIMED_WAITING (on object monitor) at java.lang.Obje...
setExclusiveOwnerThread(Thread.currentThread());// 设置为当前线程独占资源returntrue;}returnfalse;}// 释放锁,将状态设置为0protectedbooleantryRelease(int releases){assert releases==1;// Otherwise unusedif(getState()==0)thrownewIllegalMonitorStateException();setExclusiveOwnerThread(null);setState(0);/...
* tasks. When true, the same keep-alive policy applying to * non-core threads applies also to core threads. To avoid * continual thread replacement, the keep-alive time must be * greater than zero when setting {@code true}. This method ...
public class Main extends Thread { public static int amount = 0; public static void main(String[] args) { Main thread = new Main(); thread.start(); // Wait for the thread to finish while(thread.isAlive()) { System.out.println("Waiting..."); } // Update amount and print its va...
publicstaticvoidtest02()throws InterruptedException{Thread t=newThread(()->{for(int i=0;i<100;i++){if(Thread.interrupted()){System.out.println("线程已中断,退出执行");break;}System.out.println("process i="+i+",interrupted:"+Thread.currentThread().isInterrupted());}});t.start();Thread...