Java编程有哪些实例?
Java编程有哪些实例?
class NewThread extends Thread{ boolean suspendFlag; NewThread(String threadname, ThreadGroup tgOb){ super(tgOb, threadname); System。
out。println("New thread: "+this); suspendFlag = false; start(); } public void run(){ try{ for(int i=5;i>0;i--){ System。
out。println(getName()+": "+i); Thread。sleep(1000); synchronized(this){ while(suspendFlag){ wait(); } } } }catch(Exception e){ System。
out。println("Exception in "+getName()); } System。out。println(getName()+"exiting。"); } void mysuspend(){ suspendFlag = true; } synchronized void myresume(){ suspendFlag = false; notify(); } } public class test { public static void main(String[] args) { // TODO Auto-generated method stub ThreadGroup groupA = new ThreadGroup("Group A"); ThreadGroup groupB = new ThreadGroup("Group B"); NewThread ob1 = new NewThread("one", groupA); NewThread ob2 = new NewThread("Tow", groupA); NewThread ob3 = new NewThread("three", groupB); NewThread ob4 = new NewThread("Four", groupB); System。
out。println("Suspending Group A"); Thread tga[] = new Thread[groupA。activeCount()]; groupA。enumerate(tga); for(int i=0;i ((NewThread)tga[i])。
mysuspend(); } try { Thread。sleep(4000); }catch(InterruptedException e){ System。out。println("Main thread interrupted。
"); } System。out。println("Resuming Group A"); for(int i=0;i ((NewThread)tga[i])。myresume(); } try { System。out。println("Waiting for threads to finish。
"); ob1。join(); ob2。join(); ob3。join(); ob4。join(); }catch (Exception e){ System。out。println("Exception in Main thread"); } System。
out。println("Main thread exiting。"); } }。
答:有什么VBA的问题你可以提到 中详情>>