单选题11.classA {  12. public void process() { System.out.print(”A “); } }  13. class B extends A {  14. public void process() throws RuntimeException {  15. super.process();  16. if (true) throw new RuntimeException();  17. System.out.print(“B”); }}  18. pu

题目
单选题
11.classA {  12. public void process() { System.out.print(”A “); } }  13. class B extends A {  14. public void process() throws RuntimeException {  15. super.process();  16. if (true) throw new RuntimeException();  17. System.out.print(“B”); }}  18. public static void main(String[] args) {  19. try { ((A)new B()).process(); }  20. catch (Exception e) { System.out.print(”Exception “); }  21. }  What is the result?()
A

 Exception

B

 A Exception

C

 A Exception B

D

 A B Exception

E

 Compilation fails because of an error in line 14.

F

 Compilation fails because of an error in line 19.


相似考题
更多“11.classA {  12. public void process() { System.out.print(”A”相关问题
  • 第1题:

    public class Pet{     private String name;     public Pet(String name){       this.name = name;    }  public void speak(){     System.out.print(name); }  }  public class Dog extends Pet{     public Dog(String name){       super(name);    }  public void speak(){    super.speak();  System.out.print(“ Dog ”);    } }  执行代码   Pet pet = new Dog(“京巴”);  pet.speak();  后输出的内容是哪项?() 

    • A、 京巴
    • B、 京巴 Dog
    • C、 null
    • D、 Dog京巴

    正确答案:B

  • 第2题:

    public class X {  public static void main(String [] args) {  try {  badMethod();  System.out.print(“A”);  }  catch (Exception ex) {  System.out.print(“C”);  }  finally {  System.out.print(“B”);  }  System.out.print(“D”);  }  public static void badMethod() {  throw new Error();  }  }  What is the result?()  

    • A、 ABCD
    • B、 Compilation fails.
    • C、 C is printed before exiting with an error message.
    • D、 BC is printed before exiting with an error message.
    • E、 BCD is printed before exiting with an error message.

    正确答案:B

  • 第3题:

    Runnable r = new Runnable() {  public void run() {  System.out.print(”Cat”);  }  };  Threadt=new Thread(r) {  public void run() {  System.out.print(”Dog”);  }  };  t.start();  What is the result?() 

    • A、 Cat
    • B、 Dog
    • C、 Compilation fails.
    • D、 The code runs with no output.
    • E、 An exception is thrown at runtime.

    正确答案:B

  • 第4题:

    11. static class A {  12. void process() throws Exception { throw new Exception(); }  13. }  14. static class B extends A {  15. void process() { System.out.println(”B”); }  16. }  17. public static void main(String[] args) {  18. new B().process();  19. }  What is the result?() 

    • A、 B
    • B、 The code runs with no output.
    • C、 Compilation fails because of an error in line 12.
    • D、 Compilation fails because of an error in line 15.
    • E、 Compilation fails because of an error in line 18.

    正确答案:A

  • 第5题:

    public class X {  public static void main(String [] args) {  try {  badMethod();  System.out.print(“A”);  }  catch (RuntimeException ex) {  System.out.print(“B”);  }  catch (Exception ex1) {  System.out.print(“C”);  }   finally {  System.out.print(“D”);  }  System.out.print(“E”);  }  public static void badMethod() {  throw new RuntimeException();  }  }  What is the result?()  

    • A、 BD
    • B、 BCD
    • C、 BDE
    • D、 BCDE
    • E、 ABCDE
    • F、 Compilation fails.

    正确答案:C

  • 第6题:

    Given:   11. static class A {   12. void process() throws Exception { throw new Exception(); }   13. }   14. static class B extends A {   15. void process() { System.out.println("B "); }   16. }   17. public static void main(String[] args) {   18. A a = new B();   19. a.process();   20. }   What is the result? ()

    • A、 Compilation fails because of an error in line 19.
    • B、 An exception is thrown at runtime.
    • C、 B
    • D、 Compilation fails because of an error in line 18.
    • E、 Compilation fails because of an error in line 15. 
    • F、 The code runs with no output.

    正确答案:A

  • 第7题:

    单选题
    11. static class A {  12. void process() throws Exception { throw new Exception(); }  13. }  14. static class B extends A {  15. void process() { System.out.println(”B”); }  16. }  17. public static void main(String[] args) {  18. new B().process();  19. }  What is the result?()
    A

     B

    B

     The code runs with no output.

    C

     Compilation fails because of an error in line 12.

    D

     Compilation fails because of an error in line 15.

    E

     Compilation fails because of an error in line 18.


    正确答案: E
    解析: 暂无解析

  • 第8题:

    单选题
    11.classA {  12. public void process() { System.out.print(”A “); } }  13. class B extends A {  14. public void process() throws RuntimeException {  15. super.process();  16. if (true) throw new RuntimeException();  17. System.out.print(“B”); }}  18. public static void main(String[] args) {  19. try { ((A)new B()).process(); }  20. catch (Exception e) { System.out.print(”Exception “); }  21. }  What is the result?()
    A

     Exception

    B

     A Exception

    C

     A Exception B

    D

     A B Exception

    E

     Compilation fails because of an error in line 14.

    F

     Compilation fails because of an error in line 19.


    正确答案: F
    解析: 暂无解析

  • 第9题:

    单选题
    public class X {  public static void main(String [] args) {  try {  badMethod();  System.out.print(“A”);  }  catch (Exception ex) {  System.out.print(“B”);  }  finally {  System.out.print(“C”);  }  System.out.print(“D”);  }  public static void badMethod() {  throw new RuntimeException();  }  }  What is the result? ()
    A

     AB

    B

     BC

    C

     ABC

    D

     BCD

    E

     Compilation fails.


    正确答案: D
    解析: 暂无解析

  • 第10题:

    多选题
    class Flow {  public static void main(String [] args) {  try {  System.out.print("before ");  doRiskyThing();  System.out.print("after ");  } catch (Exception fe) {  System.out.print("catch ");  }  System.out.println("done ");  }   public static void doRiskyThing() throws Exception {  // this code returns unless it throws an Exception  } }  可能会产生下面哪两项结果?()
    A

    before

    B

    before catch

    C

    before after done

    D

    before catch done


    正确答案: A,D
    解析: 暂无解析

  • 第11题:

    单选题
    public class Base {  public static final String FOO = “foo”;  public static void main(String[] args) {  Base b = new Base();  Sub s = new Sub();  System.out.print(Base.FOO);  System.out.print(Sub.FOO);  System.out.print(b.FOO);  System.out.print(s.FOO);  System.out.print(((Base)s).FOO);  } }  class Sub extends Base {public static final String FOO=bar;}  What is the result?()
    A

     foofoofoofoofoo

    B

     foobarfoobarbar

    C

     foobarfoofoofoo

    D

     foobarfoobarfoo

    E

     barbarbarbarbar

    F

     foofoofoobarbar

    G

     foofoofoobarfoo


    正确答案: B
    解析: 暂无解析

  • 第12题:

    单选题
    public class X {  public static void main(String [] args) {  try {  badMethod();  System.out.print(“A”); }  catch (Exception ex) {  System.out.print(“B”);  }  finally {  System.out.print(“C”);  }  System.out.print(“D”);  }   public static void badMethod() {} }  What is the result?()
    A

     AC

    B

     BD

    C

     ACD

    D

     ABCD

    E

     Compilation fails.


    正确答案: A
    解析: 暂无解析

  • 第13题:

    public class Base {  public static final String FOO = “foo”;  public static void main(String[] args) {  Base b = new Base();  Sub s = new Sub();  System.out.print(Base.FOO);  System.out.print(Sub.FOO);  System.out.print(b.FOO);  System.out.print(s.FOO);  System.out.print(((Base)s).FOO);  } }  class Sub extends Base {public static final String FOO=bar;}  What is the result?() 

    • A、 foofoofoofoofoo
    • B、 foobarfoobarbar
    • C、 foobarfoofoofoo
    • D、 foobarfoobarfoo
    • E、 barbarbarbarbar
    • F、 foofoofoobarbar
    • G、 foofoofoobarfoo

    正确答案:D

  • 第14题:

    public class Test {  public enum Dogs {collie, harrier, shepherd};  public static void main(String [] args) {  Dogs myDog = Dogs.shepherd;  switch (myDog) {  case collie:  System.out.print(”collie “);  case default:  System.out.print(”retriever “); case harrier:  System.out.print(”harrier “);  }  }  }  What is the result?() 

    • A、 harrier
    • B、 shepherd
    • C、 retriever
    • D、 Compilation fails.
    • E、 retriever harrier
    • F、 An exception is thrown at runtime.

    正确答案:D

  • 第15题:

    static void test() {  try {  String x=null;  System.out.print(x.toString() +“ “);  }  finally { System.out.print(“finally “); }  }  public static void main(String[] args) {  try { test(); }  catch (Exception ex) { System.out.print(”exception “); }  }  What is the result?() 

    • A、 null
    • B、 finally
    • C、 null finally
    • D、 Compilation fails.
    • E、 finally exception

    正确答案:E

  • 第16题:

    public class X {  public static void main(String [] args) {  try {  badMethod();  System.out.print(“A”); }  catch (Exception ex) {  System.out.print(“B”);  }  finally {  System.out.print(“C”);  }  System.out.print(“D”);  }   public static void badMethod() {} }  What is the result?()  

    • A、 AC
    • B、 BD
    • C、 ACD
    • D、 ABCD
    • E、 Compilation fails.

    正确答案:C

  • 第17题:

    11.classa {  12. public void process() { System.out.print(”a,”); } }  13. class b extends a {  14. public void process() throws IOException {  15. super.process();  16. System.out.print(”b,”);  17. throw new IOException();  18. } }  19. public static void main(String[] args) {  20. try { new b().process(); }  21. catch (IOException e) { System.out.println(”Exception”); } }  What is the result?() 

    • A、 Exception
    • B、 a,b,Exception
    • C、 Compilation fails because of an error in line 20.
    • D、 Compilation fails because of an error in line 14.
    • E、 A NullPointerException is thrown at runtime.

    正确答案:D

  • 第18题:

    单选题
    public class X {  public static void main(String [] args) {  try {  badMethod();  System.out.print(“A”);  }  catch (RuntimeException ex) {  System.out.print(“B”);  }  catch (Exception ex1) {  System.out.print(“C”);  }   finally {  System.out.print(“D”);  }  System.out.print(“E”);  }  public static void badMethod() {  throw new RuntimeException();  }  }  What is the result?()
    A

     BD

    B

     BCD

    C

     BDE

    D

     BCDE

    E

     ABCDE

    F

     Compilation fails.


    正确答案: D
    解析: 暂无解析

  • 第19题:

    单选题
    public class Pet{  public void speak(){   System.out.print(“ Pet ”);  }  }   public class Cat extends Pet{  public void speak(){   System.out.print(“ Cat ”);  }  }   public class Dog extends Pet{  public void speak(){   System.out.print(“ Dog ”);  }  }   执行代码   Pet[] p = {new Cat(),new Dog(),new Pet()};   for(int i=0;i〈p.length;i++)   p[i].speak();   后输出的内容是哪项?()
    A

    Pet Pet Pet

    B

    Cat Cat Cat

    C

    Cat Dog Pet

    D

    Cat Dog Dog


    正确答案: B
    解析: 暂无解析

  • 第20题:

    单选题
    class One {  public One() { System.out.print(1); }  }  class Two extends One {  public Two() { System.out.print(2); }  }  class Three extends Two {  public Three() { System.out.print(3); }  }  public class Numbers{  public static void main( String[] argv) { new Three(); }  }  What is the result when this code is executed?()
    A

     1

    B

     3

    C

     123

    D

     321

    E

     The code rims with no output.


    正确答案: B
    解析: 暂无解析

  • 第21题:

    单选题
    public class Pet{     private String name;     public Pet(String name){       this.name = name;    }  public void speak(){     System.out.print(name); }  }  public class Dog extends Pet{     public Dog(String name){       super(name);    }  public void speak(){    super.speak();  System.out.print(“ Dog ”);    } }  执行代码   Pet pet = new Dog(“京巴”);  pet.speak();  后输出的内容是哪项?()
    A

     京巴

    B

     京巴 Dog

    C

     null

    D

     Dog京巴


    正确答案: A
    解析: 暂无解析

  • 第22题:

    单选题
    Runnable r = new Runnable() {  public void run() {  System.out.print(”Cat”);  }  };  Threadt=new Thread(r) {  public void run() {  System.out.print(”Dog”);  }  };  t.start();  What is the result?()
    A

     Cat

    B

     Dog

    C

     Compilation fails.

    D

     The code runs with no output.

    E

     An exception is thrown at runtime.


    正确答案: D
    解析: 暂无解析

  • 第23题:

    单选题
    public class X {  public static void main(String [] args) {  try {  badMethod();  System.out.print(“A”);  }  catch (Exception ex) {  System.out.print(“C”);  }  finally {  System.out.print(“B”);  }  System.out.print(“D”);  }  public static void badMethod() {  throw new Error();  }  }  What is the result?()
    A

     ABCD

    B

     Compilation fails.

    C

     C is printed before exiting with an error message.

    D

     BC is printed before exiting with an error message.

    E

     BCD is printed before exiting with an error message.


    正确答案: E
    解析: The correct answer is : B is printed and then an error message is printed. The exception catch can not catch an Error because this class does not extend Exception but it implements throwable. 

  • 第24题:

    单选题
    下列程序的运行结果是(  )。class Shape{ public Shape(){ System.out.print("Shape"); }}class Circle extends Shape{ public Circle(){ System.out.print("Circle"); }}public class Test{ public static void main(String[]args){ Shape d=new Circle(); }}
    A

    Shape

    B

    Circle

    C

    ShapeCircle

    D

    程序有错误


    正确答案: B
    解析:
    继承是面向对象编程的一个主要优点之一,它对如何设计Java类有着直接的影响。该程序首先编写了一个Shape的类,然后又编写一个类Circle去继承Shape类。由于子类拥有父类所有的属性和方法,所以输出的是ShapeCircle。