class ThreadBoth extends Thread implements Runnable {  public void run(){ System.out.print("hi "); }  public static void main(String [] args){  Thread t1 = new ThreadBoth();   Thread t2 = new Thread(t1);  t1.run();  t2.run();  }  }  结果为:() A、hiB、hi hiC、编

题目

class ThreadBoth extends Thread implements Runnable {  public void run(){ System.out.print("hi "); }  public static void main(String [] args){  Thread t1 = new ThreadBoth();   Thread t2 = new Thread(t1);  t1.run();  t2.run();  }  }  结果为:() 

  • A、hi
  • B、hi hi
  • C、编译失败
  • D、代码运行,但无输出结果

相似考题
更多“class ThreadBoth exte”相关问题
  • 第1题:

    The IP address 192.168.100.1 belongs to which class of IP address space?()

    A. Class A

    B. Class B

    C. Class C

    D. Class D


    参考答案:C

  • 第2题:

    下面程序输出的结果为( )。 #inClUde”iostream.h” Class A {public: A(){cout<<“CLASS A”<<endl;} ~A()<)}; class B:public A {public: B(){cout<<”CLASSB”<<endl;} ~B(){}}; void main() {A*p; p=new B; B *q; q=new B;}

    A.CLASS A CLASS B

    B.CLASS A CLASS B CLASS B

    C.CLASS A ClASS B

    D.CLASS A CLASS B CLASS A CLASS B CLASS B CLASS B


    正确答案:C
    解析: 本题考查类的继承、类的实例化和构造函数、析构函数的调用方式和何时调用。每实例化一个类就要调用其构造函数,结束运行该实例后调用析构函数。

  • 第3题:

    Into which two types of areas would an area border router (ABR) inject a default route?()

    A. stub

    B. the autonomous system of an exte rior gateway protocol (EGP)

    C. NSSA

    D. totally stubby

    E. the autonomous system of a different interior gateway protocol (IGP)

    F. area 0


    参考答案:A, D

  • 第4题:

    以下GPRSMS中级别最高的为()。

    • A、Class A
    • B、Class B
    • C、Class C
    • D、Class D

    正确答案:A

  • 第5题:

    Which class of Cisco access points operate under IEEE 802.3af power?()

    • A、Class A
    • B、Class 1
    • C、Class 2
    • D、Class 3
    • E、Class 4

    正确答案:D

  • 第6题:

    In which two cases does the compiler supply a default constructor for class A?()  

    • A、 class A{}
    • B、 class A { public A(){} }
    • C、 class A { public A(int x){} }
    • D、 class Z {} class A extends Z { void A(){} }

    正确答案:A,D

  • 第7题:

    Which thefollowingstatements about static inner classes is true?()

    • A、 An anonymous class can be declared as static.
    • B、 A static inner class cannot be a static member of the outer class.
    • C、 A static inner class does not require an instance of the enclosing class.
    • D、 Instance member of a static inner class can be referenced using the class name of the staticinner class.

    正确答案:C

  • 第8题:

    根据栅格系统的标准用法,错误的是()

    • A、<div class="container"><br><div class="row"> 
    • B、<div class="row"><br><div class="col-md-1"> 
    • C、<div class="row"><br><div class="container"> 
    • D、<div class="col-md-1"><br><div class= "row">

    正确答案:C

  • 第9题:

    Into which two types of areas would an area border router (ABR) inject a default route?()

    • A、stub
    • B、the autonomous system of an exte rior gateway protocol (EGP)
    • C、NSSA
    • D、totally stubby
    • E、the autonomous system of a different interior gateway protocol (IGP)
    • F、area 0

    正确答案:A,D

  • 第10题:

    Which of the following class networks contains 65,534 hosts?()

    • A、Class A
    • B、Class B
    • C、Class C
    • D、Class D

    正确答案:B

  • 第11题:

    What produces a compiler error?()  

    • A、 class A { public A(int x) {} }
    • B、 class A {} class B extends A { B() {} }
    • C、 class A { A() {} } class B { public B() {} }
    • D、 class Z { public Z(int) {} } class A extends Z {}

    正确答案:D

  • 第12题:

    单选题
    What produces a compiler error?()
    A

     class A { public A(int x) {} }

    B

     class A {} class B extends A { B() {} }

    C

     class A { A() {} } class B { public B() {} }

    D

     class Z { public Z(int) {} } class A extends Z {}


    正确答案: A
    解析: 暂无解析

  • 第13题:

    下面程序输出的结果为 #include"iostream.h” class A { public: A(){cout<<"CLASSA"<<endl;} ~A() {} }; class B:public A { public: B(){cout<<"CLASS B"<<endl;} ~B(){} }; void main() { A*p; p=new B;

    A.CLASS A CLASS B CLASS B CLASS B

    B.CLASS A CLASS B CLASS A CLASS B

    C.CLASS A CLASS B CLASS B

    D.CLASS A CLASS B


    正确答案:C

  • 第14题:

    对于下面( )类定义,可以通过“newJ_Class()”生成类J_Class的实例对象。

    A、publicclassJ_Class{

    publicJ_Class(void){}

    }

    B、publicclassJ_Class{}

    C、publicclassJ_Class{

    publicJ_Class(Strings){}

    }

    D、publicclassJ_Class{

    publicvoidJ_Class(){}

    publicJ_Class(Strings){}


    正确答案:B

  • 第15题:

    Which statement is NOT true concerning the stowage of class 1 explosives ________.

    A.Class 1.1 explosives may be stowed with class 9 dangerous substances

    B.Class 1.4 explosives must be“separated from”a stow of class 5.1 oxidizing materials

    C.Class 1.4 explosives may not be stowed in the same hold with class 6.1 poisons

    D.Class 1.4 explosives must be“separated from”a stow of class 8 corrosive materials


    正确答案:C

  • 第16题:

    GPRS手机类型可分为()。

    • A、CLASS A
    • B、CLASS B
    • C、CLASS C
    • D、CLASS D

    正确答案:A,B,C

  • 第17题:

    Which of the following class networks represents a possibility of being further subnetted into 2 subnets of 128 hosts per subnet?()

    • A、Class A
    • B、Class B
    • C、Class C
    • D、Class D

    正确答案:C

  • 第18题:

    Which declaration prevents creating a subclass of an outer class?()

    • A、 Static class FooBar{}
    • B、 Private class FooBar{}
    • C、 Abstract public class FooBar{}
    • D、 Final public class FooBar{}
    • E、 Final abstract class FooBar{}

    正确答案:D

  • 第19题:

    在MCDU电子状态页报告里能查看故障()

    • A、Class1&Class3
    • B、Class2&Class3
    • C、Class1&Class2
    • D、Class1,Class2&Class3

    正确答案:D

  • 第20题:

    关于嵌套列的用法,错误的是()

    • A、<div class=“row”><br><div class=“col-sm-1”>
    • B、<div class=“col-sm-1”><br><div class=“row”><br> 
    • C、<div class=“row”><br><div class=“container”><br><div class=“col-xs-1”><br> 
    • D、<div class=“container”><br><div class=“row”><br><div class=“col-xs-1”>

    正确答案:C

  • 第21题:

    Which of the following class addresses is reserved for multicast?()

    • A、 Class A
    • B、 Class B
    • C、 Class C
    • D、 Class D

    正确答案:D

  • 第22题:

    Which statements about static inner classes are true?()

    • A、 A static inner class requires a static initializer.
    • B、 A static inner class requires an instance of the enclosing class.
    • C、 A static inner class has no reference to an instance of the enclosing class.
    • D、 A static inner class has access to the non-static members of the outer class.
    • E、 Static members of a static inner class can be referenced using the class name of the static inner  class.

    正确答案:C,E

  • 第23题:

    现有:  class ThreadBoth extends Threaa implements Runnable  {      public void run()  (System.out.print("hi");  }     public static voicl main (String  []  args)  {     Thread tl=new ThreadBoth():      Thread t2 = new Thread (tl):     tl.run():      t2.run():     }          结果为:()      

    • A、 hi hi
    • B、 hi
    • C、编译失败
    • D、运行时异常被抛出

    正确答案:A

  • 第24题:

    单选题
    现有:  class ThreadBoth extends Threaa implements Runnable  {      public void run()  (System.out.print("hi");  }     public static voicl main (String  []  args)  {     Thread tl=new ThreadBoth():      Thread t2 = new Thread (tl):     tl.run():      t2.run():     }          结果为:()
    A

     hi hi

    B

     hi

    C

    编译失败

    D

    运行时异常被抛出


    正确答案: B
    解析: 暂无解析