为了使得System.out.println()输出对象引用的时候得到有意义的信,我们应该覆盖Object t{-的哪个方法?() A、equalsB、toStringC、hashCodeD、notify
为了使得System.out.println()输出对象引用的时候得到有意义的信,我们应该覆盖Object t{-的哪个方法?()
- A、equals
- B、toString
- C、hashCode
- D、notify
相关考题:
Given:fooandbararepublicreferencesavailabletomanyotherthreads,fooreferstoaThreadandbarisanObject.Thethreadfooiscurrentlyexecutingbar.wait().Fromanotherthread,whatprovidesthemostreliablewaytoensurethatfoowillstopexecutingwait()?()A.foo.notify();B.bar.notify();C.foo.notifyAll();D.Thread.notify();E.bar.notifyAll();F.Object.notify();
程序:classMyDate{privateintyear;privateintmonth;privateintday;publicMyDate(intyear,intmonth,intday){this.year=year;this.month=month;this.day=day;}//OverrideMethod}为了让newMyDate(1980,11,9)==(判断是否相等)newMyDate(1980,11,9)返回true,必须在OverrideMethod处覆盖哪个方法?()A.hashCodeB.equalsC.toStringD.notify
为了使得System.out.println()输出对象引用的时候得到有意义的信,我们应该覆盖Objectt{-的哪个方法?() A.equalsB.toStringC.hashCodeD.notify
fooandbararepublicreferencesavailabletomanyotherthreads.fooreferstoaThreadandbarisanObject.Thethreadfooiscurrentlyexecutingbar.wait().Fromanotherthread,whichstatementisthemostreliablewaytoensuethatfoowillstopexecutingwait()?A.foo.notify();B.bar.notify();C.foo.notifyAll();D.Thread.notify();E.bar.notiFYAll();F.Object.notify();
Given that t1 is a reference to a live thread, which is true?() A.The Thread.sleep() method can take t1 as an argument.B.The Object.notify() method can take t1 as an argument.C.The Thread.yield() method can take t1 as an argument.D.The Thread.setPriority() method can take t1 as an argument.E.The Object.notify() method arbitrarily chooses which thread to notify.
在程序运行过程中,(49)将方法与特定的对象动态地联系在一起,使得不同的对象在使用同样的方法时,可以因对象的状态不同而产生不同的行为,从而使得方法对具体的对象具有个性。A.消息传递机制B.对象自身引用C.消息传递机制和对象自身引用D.参数多态
使用嵌入式方法引用样式单应该使用的引用标记是( ).A. B. C. D. 使用嵌入式方法引用样式单应该使用的引用标记是( ).A.<link>B.<object>C.<style>D.<head>
对象自身引用(Self-Reference)是OOPL中的一种特有结构。对象自身引用的值和类型分别扮演了两种意义的角色:对象自身引用的值使得方法体中引用的成员名与特定的对象相关,对象自身引用的类型则决定了方法体被实际共享的(51)。A.类型B.程度C.大小D.范围
以下关于Object类的描述中,错误的是()。A、Object类提供了wait,notify,notifyAll等函数用于线程间同步B、Object类提供了clone,compare,delete,add,insert等函数用于对对象进行操作C、Object类是所有自定义类的直接或间接父类,但不是系统类的父类D、Object类定义了一些每个类都应该有的基本的成员变量和成员函数E、Object类是其它一切类的直接或间接父类
对于一个已经不被任何引用变量引用的对象,当垃圾回收器准备回收该对象所占用的内存时,将自动调用该对象的以下哪个方法()A、finalizeB、notifyC、nofityAllD、hashCode
为了使得System.out.println()输出对象引用的时候得到有意义的信我们应该覆盖Objectt{-的哪个方法?()A、equalsB、toStringC、hashCodeD、notify
Which statements concerning the methods notify() and notifyAll() are true? A、Instances of class Thread have a method called notify().B、A call to the method notify() will wake the thread that currently owns the monitor of the object.C、The method notify() is synchronized.D、The method notifyAll() is defined in class Thread.E、When there is more than one thread waiting to obtain the monitor of an object, there is no way to be sure which thread will be notified by the notify() method.
在Java中,调用一个对象的wait()方法后,()。 A、如果该对象的notify()方法已经被调用,则不会产生任何效果B、在另外一个对象调用它的notify()或 notifyAll()方法之前该对象一直被挂起C、将抛出一个异常D、该对象的wait()方法与其他对象自动同步
Given: foo and bar are public references available to many other threads, foo refers to a Thread and bar is an Object. The thread foo is currently executing bar.wait(). From another thread, what provides the most reliable way to ensure that foo will stop executing wait()?()A、foo.notify();B、bar.notify();C、foo.notifyAll();D、Thread.notify();E、bar.notifyAll();F、Object.notify();
Given that t1 is a reference to a live thread, which is true?()A、The Thread.sleep() method can take t1 as an argument.B、The Object.notify() method can take t1 as an argument.C、The Thread.yield() method can take t1 as an argument.D、The Thread.setPriority() method can take t1 as an argument.E、The Object.notify() method arbitrarily chooses which thread to notify.
final、finally和finalize的区别中,下述说法正确的有()。A、final用于声明属性,方法和类,分别表示属性不可变,方法不可覆盖,类不可继承B、finally是异常处理语句结构的一部分,表示总是执行C、finalize是Object类的一个方法,在垃圾收集器执行的时候会调用被回收对象的此方法,可以覆盖此方法提供垃圾收集时的其他资源的回收,例如关闭文件等D、引用变量被final修饰之后,不能再指向其他对象,它指向的对象的内容也是不可变的
为了使得System.out.println()输出对象引用的时候得到有意义的信息,我们应该覆盖Object中的哪个方法?() A、 equalsB、 hashCodeC、 toStringD、 notify
try { if ((new Object))(.equals((new Object()))) { System.out.println(“equal”); }else{ System.out.println(“not equal”); } }catch (Exception e) { System.out.println(“exception”); } What is the result? () A、 equalB、 not equalC、 exceptionD、 Compilation fails.
Which statement is true?() A、 If only one thread is blocked in the wait method of an object, and another thread executes the modify on that same object, then the first thread immediately resumes execution.B、 If a thread is blocked in the wait method of an object, and another thread executes the notify method on the same object, it is still possible that the first thread might never resume execution.C、 If a thread is blocked in the wait method of an object, and another thread executes the notify method on the same object, then the first thread definitely resumes execution as a direct and sole consequence of the notify call.D、 If two threads are blocked in the wait method of one object, and another thread executes the notify method on the same object, then the first thread that executed the wait call first definitely resumes execution as a direct and sole consequence of the notify call.
单选题为了使得System.out.println()输出对象引用的时候得到有意义的信息,我们应该覆盖Object中的哪个方法?()A equalsB hashCodeC toStringD notify
单选题foo and bar are public references available to many other threads. foo refers to a Thread and bar is an Object. The thread foo is currently executing bar.wait(). From another thread, which statement is the most reliable way to ensue that foo will stop executing wait()?A foo.notify();B bar.notify();C foo.notifyAll();D Thread.notify();E bar.notiFYAll();F Object.notify();
多选题Which statements concerning the methods notify() and notifyAll() are true?AInstances of class Thread have a method called notify().BA call to the method notify() will wake the thread that currently owns the monitor of the object.CThe method notify() is synchronized.DThe method notifyAll() is defined in class Thread.EWhen there is more than one thread waiting to obtain the monitor of an object, there is no way to be sure which thread will be notified by the notify() method.
单选题为了使得System.out.println()输出对象引用的时候得到有意义的信,我们应该覆盖Object t{-的哪个方法?()AequalsBtoStringChashCodeDnotify
单选题为了使得System.out.println()输出对象引用的时候得到有意义的信我们应该覆盖Objectt{-的哪个方法?()AequalsBtoStringChashCodeDnotify