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Try to find out the reasons of your stress is always the first step to overcome stress.()
此题为判断题(对,错)。
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更多 “ Try to find out the reasons of your stress is always the first step to overcome stress.() 此题为判断题(对,错)。 ” 相关考题
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PublicclassHoltextendsThread{PrivateStringsThreadName;Publicstaticvoidmain(Stringargv[]){Holth=newHolt();h.go();Holt(){};Holt(Strings){sThreadName=s;PublicStringgetThreadName(){returnsThreadName;}}Publicvoidgo(){Hotfirst=newHot(first);first.start();Hotsecond=newHot(second);second.start();}Publicvoidstart(){For(inti=0;i2;i++){System.out.print(getThreadName()+i);Try{Thread.sleep(100);}catch(Exceptione){System.out.print(e.getMessage());}}}}当编译运行上面代码时,将会出现()A.编译时错误B.输出first0,second0,first0,second1C.输出first0,first1,second10,second1D.运行时错误
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阅读以下说明和Java代码,将应填入(n)处的字句写在对应栏内。【说明】下面的Java程序演示了程序竞争资源(Mutex的实例对象)而引起程序死锁的一种例子。【Java程序】import java.applet.*;import java.awt.*;//此处声明一个互斥类class Mutex { }class A extends (1){private Mutex first,second;public A(Mutex f,Mutex s){first = f;second = s;}public void run(){//锁定first变量(2) (first){try{ //本线程挂起,等待重新调度Thread.sleep(1); //注意此处(1)不是小题序号}catch(InterruptedException e){}System. out. println("threadA got first mutex");(2) (second) //锁定second变量{ //do somethingSystem. out. println("threadA got second mutex");} //释放second变量} //释放first变量}}class B extends (1){private Mutex first,second;public B(Mutex f,Mutex s){(3) ;second = s;}public void run(){(2) (second) //锁定second变量{//do somethingtry{Thread.sleep(((int)(3*Math.random()))*1000);//本线程挂起,等待重新调度}catch(InterruptedException e){}System.out.println("threadB got second mutex");(2) (first) //锁定first变量{//do somethingSystem.out.println("threadB got first mutex");} //释放first变量} //释放second变量}}public class DeadlockExample{public static void main(String arg[]){Mutex mutexX = new Mutex();Mutex mutexY = new Mutex();AthreadA = new A(mutexX,mutexY);B threadB = new B (4);threadA.(5);threadB.start();}}
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classOrderimplementsRunnable{publicvoidrun(){try{Thread.sleep(2000);}catch(Exceptione){}System.out.print(in);}publicstaticvoidmain(String[]args){Threadt=newThread(newOrder());t.start();System.out.print(pre);try{t.join();}catch(Exceptione){}System.out.print(post);}}可产生哪两项结果?()A.inpreB.preinC.inprepostD.preinpost
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classBirds{publicstaticvoidmain(String[]args){try{thrownewException();}catch(Exceptione){try{thrownewException();}catch(Exceptione2){System.out.print(inner);}System.out.print(middle);}System.out.print(outer);}}结果为:()A.innerB.innerouterC.middleouterD.innermiddleouter
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classOrderimplementsRunnable{publicvoidrun(){try{Thread.sleep(2000);}catch(Exceptione)System.out.print(in);publicstaticvoidmain(String[]args){Threadt=newThread(newOrder());t.start();System.out.print(pre);try{t.join();}catch(Exceptione){}System.out.print(post);可产生哪两项结果?()A.preinpostB.preinC.inpostpreD.inprepostE.prepostin
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现有:classBirds{publicstaticvoidmain(String[]args){try{thrownewException();}catch(Exceptione){try{thrownewException();}catch(Exceptione2){System.out.print(inner);}System.out.print(middle);}System.out.print(outer);}}结果是()A.innerouterB.middleouterC.innermiddleouterD..编译失败
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staticvoidtest()throwsRuntimeException{try{System.out.print(”test);thrownewRuntimeException();}catch(Exceptionex){System.out.print(”exception);}}publicstaticvoidmain(String[]args){try{test();}catch(RuntimeExceptionex){System.out.print(”runtime);}System.out.print(”end);}Whatistheresult?()A.testendB.Compilationfails.C.testruntimeendD.testexceptionendE.AThrowableisthrownbymainatruntime.
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staticvoidtest(){try{Stringx=null;System.out.print(x.toString()+);}finally{System.out.print(finally);}}publicstaticvoidmain(String[]args){try{test();}catch(Exceptionex){System.out.print(”exception);}}Whatistheresult?()A.nullB.finallyC.nullfinallyD.Compilationfails.E.finallyexception
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publicclassTest{publicstaticvoidaMethod()throwsException{try{thrownewException();}finally{System.out.println(finally”);}}publicstaticvoidmain(Stringargs[]){try{aMethod();}catch(Exceptione){System.out.println(exception”);}System.out.println(finished”);}}Whatistheresult?()A.finallyB.exceptionfinishedC.finallyexceptionfinishedD.Compilationfails.
考题
Whatarethethreemodelsofqualityofservice(QoS)inanetwork?()
A.ResourceReservationProtocol(RSVP)B.first-in,first-out(FIFO)C.best-effortD.CBWFQE.IntServF.DiffServ
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