单选题Given: What is the result?()ACompilation succeeds.BCompilation fails due to multiple errors.CCompilation fails due to an error only on line 20.DCompilation fails due to an error only on line 21.ECompilation fails due to an error only on line 22.

题目
单选题
Given: What is the result?()
A

Compilation succeeds.

B

Compilation fails due to multiple errors.

C

Compilation fails due to an error only on line 20.

D

Compilation fails due to an error only on line 21.

E

Compilation fails due to an error only on line 22.


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更多“单选题Given: What is the result?()A Compilation succeeds.B Compilation fails due to multiple errors.C Compilation fails due to an error only on line 20.D Compilation fails due to an error only on line 21.E Compilation fails due to an error only on line”相关问题
  • 第1题:

    23. Object [] myObjects = {  24. new integer(12),  25. new String(”foo”),  26. new integer(5),  27. new Boolean(true)  28. };  29. Arrays.sort(myObjects);  30. for( int i=0; i31. System.out.print(myObjects[i].toString());  32. System.out.print(” “);  33. }  What is the result?() 

    • A、 Compilation fails due to an error in line 23.
    • B、 Compilation fails due to an error in line 29.
    • C、 A ClassCastException occurs in line 29.
    • D、 A ClassCastException occurs in line 31.
    • E、 The value of all four objects prints in natural order.

    正确答案:C

  • 第2题:

    11.public static void main(String[]args){ 12.Object obj=new int[]{1,2,3}; 13.int[] someArray=(int[])obj; 14.for(inti:someArray)System.out.print(i+"") 15.} What is the result?()

    • A、123
    • B、Compilation fails because of an error in line 12.
    • C、Compilation fails because of an error in line 13.
    • D、Compilation fails because of an error in line 14.
    • E、A ClassCastException is thrown at runtime.

    正确答案:A

  • 第3题:

    单选题
    1. interface DoStuff2 {  2. float getRange(int low, int high); }  3.  4. interface DoMore {  5. float getAvg(int a, int b, int c); }  6.  7. abstract class DoAbstract implements DoStuff2, DoMore { }  8.  9. class DoStuff implements DoStuff2 {  10. public float getRange(int x, int y) { return 3.14f; } }  11.  12. interface DoAll extends DoMore {  13. float getAvg(int a, int b, int c, int d); }  What is the result?()
    A

     The file will compile without error.

    B

     Compilation fails. Only line 7 contains an error.

    C

     Compilation fails. Only line 12 contains an error.

    D

     Compilation fails. Only line 13 contains an error.

    E

     Compilation fails. Only lines 7 and 12 contain errors.

    F

     Compilation fails. Only lines 7 and 13 contain errors.

    G

     Compilation fails. Lines 7, 12, and 13 contain errors.


    正确答案: C
    解析: 暂无解析

  • 第4题:

    单选题
    Given: What is the result?()
    A

    test

    B

    null

    C

    An exception is thrown at runtime.

    D

    Compilation fails because of an error in line 1.

    E

    Compilation fails because of an error in line 4.

    F

    Compilation fails because of an error in line 5.


    正确答案: B
    解析: 暂无解析

  • 第5题:

    单选题
    Given: What is the result?()
    A

    Canada

    B

    null Canada

    C

    Canada null

    D

    Canada Canada

    E

    Compilation fails due to an error on line 26.

    F

    Compilation fails due to an error on line 29.


    正确答案: A
    解析: 暂无解析

  • 第6题:

    单选题
    Given:   What is the result?()
    A

     If you define D e = new E(), then e.bMethod() invokes the version of bMethod() defined in Line 5.

    B

     If you define D e = (D)(new E()), then e.bMethod() invokes the version of bMethod() defined in Line 5.

    C

     Compilation fails because of an error in line 9.

    D

     If you define D e = (D)(new E()), then e.bMethod() invokes the version of bMethod() defined in Line 9.

    E

     Compilation fails because of an error in line 3.

    F

     Compilation fails because of an error in line 7.


    正确答案: C
    解析: 暂无解析

  • 第7题:

    单选题
    Click the Exhibit button. What is the result?()
    A

    Compilation of class A fails.

    B

    Line 28 prints the value 3 to System.out.

    C

    Line 28 prints the value 1 to System.out.

    D

    A runtime error occurs when line 25 executes.

    E

    Compilation fails because of an error on line 28.


    正确答案: D
    解析: 暂无解析

  • 第8题:

    单选题
    Given:   11. public static void main(String[] args) {   12. Object obj = new int[] { 1, 2, 3 };   13. int[] someArray = (int[])obj;   14. for (int i : someArray) System.out.print(i + " ");   15. }   What is the result? ()
    A

     Compilation fails because of an error in line 13.

    B

     A ClassCastException is thrown at runtime.

    C

     1 2 3

    D

     Compilation fails because of an error in line 14.

    E

     Compilation fails because of an error in line 12.


    正确答案: A
    解析: 暂无解析

  • 第9题:

    单选题
    Given: What is the result?()
    A

    An Exception is thrown with no other output

    B

    followed by an Exception

    C

    Compilation fails due to an error on line 9

    D

    Compilation fails due to an error on line 14


    正确答案: C
    解析: 暂无解析

  • 第10题:

    单选题
    What is the result?()
    A

    Compilation succeeds.

    B

    Compilation fails due to multiple errors.

    C

    Compilation fails due to an error only on line 20.

    D

    Compilation fails due to an error only on line 21.

    E

    Compilation fails due to an error only on line 22.

    F

    Compilation fails due to an error only on line 12.


    正确答案: B
    解析: 暂无解析

  • 第11题:

    单选题
    10. interface A { void x(); }  11. class B implements A { public void x() { } public voidy() { } }  12. class C extends B { public void x() {} }  And:  20. java.util.List list = new java.util.ArrayList();  21. list.add(new B());  22. list.add(new C());  23. for (A a:list) {  24. a.x();  25. a.y();;  26. }  What is the result?()
    A

     The code runs with no output.

    B

     An exception is thrown at runtime.

    C

     Compilation fails because of an error in line 20.

    D

     Compilation fails because of an error in line 21.

    E

     Compilation fails because of an error in line 23.

    F

     Compilation fails because of an error in line 25.


    正确答案: F
    解析: 暂无解析

  • 第12题:

    单选题
    Given: 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
    解析: 暂无解析

  • 第13题:

    package foo;  import java.util.Vector; private class MyVector extends Vector {  int i = 1;  public MyVector() {  i = 2; } }  public class MyNewVector extends MyVector {  public MyNewVector() {  i = 4;  }  public static void main(String args[]) {  MyVector v = new MyNewVector();  }  }  What is the result?()

    • A、 Compilation succeeds.
    • B、 Compilation fails because of an error at line 5.
    • C、 Compilation fails because of an error at line 6.
    • D、 Compilation fails because of an error at line 14.
    • E、 Compilation fails because of an error at line 17.

    正确答案:B

  • 第14题:

    1. package foo; 2.  3. import java.util.Vector; 4.  5. protected class MyVector Vector { 6. init i = 1; 7. public MyVector() { 8. i = 2; 9. } 10. } 11.  12. public class MyNewVector extends MyVector { 13. public MyNewVector() { 14. i = 4; 15. } 16. public static void main(String args[]) { 17. MyVector v = new MyNewVector(); 18. } 19. } What is the result?()  

    • A、 Compilation succeeds.
    • B、 Compilation fails because of an error at line 5.
    • C、 Compilation fails because of an error at line 6.
    • D、 Compilation fails because of an error at line 14.
    • E、 Compilation fails because of an error at line 17.

    正确答案:B

  • 第15题:

    单选题
    Given: What is the result?()
    A

    Compilation succeeds.

    B

    Compilation fails due to multiple errors.

    C

    Compilation fails due to an error only on line 20.

    D

    Compilation fails due to an error only on line 21.

    E

    Compilation fails due to an error only on line 22.


    正确答案: C
    解析: 暂无解析

  • 第16题:

    单选题
    Given: What is the result?()
    A

    Compilation fails due to an error in line 23.

    B

    Compilation fails due to an error in line 29.

    C

    A ClassCastException occurs in line 29.

    D

    A ClassCastException occurs in line 31.

    E

    The value of all four objects prints in natural order.


    正确答案: E
    解析: 暂无解析

  • 第17题:

    单选题
    Given: What is the result?()
    A

    B

    B

    B, followed by an Exception.

    C

    Compilation fails due to an error on line 9.

    D

    Compilation fails due to an error on line 14.

    E

    An Exception is thrown with no other output.


    正确答案: B
    解析: 暂无解析

  • 第18题:

    单选题
    package foo;  import java.util.Vector; private class MyVector extends Vector {  int i = 1;  public MyVector() {  i = 2; } }  public class MyNewVector extends MyVector {  public MyNewVector() {  i = 4;  }  public static void main(String args[]) {  MyVector v = new MyNewVector();  }  }  What is the result?()
    A

     Compilation succeeds.

    B

     Compilation fails because of an error at line 5.

    C

     Compilation fails because of an error at line 6.

    D

     Compilation fails because of an error at line 14.

    E

     Compilation fails because of an error at line 17.


    正确答案: C
    解析: 暂无解析

  • 第19题:

    单选题
    Given: What is the result?()
    A

    Canada

    B

    null Canada

    C

    Canada null

    D

    Canada Canada

    E

    Compilation fails due to an error on line 26.


    正确答案: A
    解析: 暂无解析

  • 第20题:

    单选题
    Given: What is the result?()
    A

    X, followed by an Exception.

    B

    No output, and an Exception is thrown.

    C

    Compilation fails due to an error on line 14.

    D

    Compilation fails due to an error on line 16.

    E

    Compilation fails due to an error on line 17.


    正确答案: B
    解析: 暂无解析

  • 第21题:

    单选题
    What is the result?()
    A

    Compilation of class A fails.

    B

    Line 28 prints the value 3 to System.out.

    C

    Line 28 prints the value 1 to System.out.

    D

    A runtime error occurs when line 25 executes.

    E

    Compilation fails because of an error on line 28.


    正确答案: E
    解析: 暂无解析

  • 第22题:

    单选题
    Given: What is the result when method testIfA is invoked?()
    A

    True

    B

    Not true

    C

    An exception is thrown at runtime.

    D

    Compilation fails because of an error at line 12.

    E

    Compilation fails because of an error at line 19.


    正确答案: B
    解析: 暂无解析

  • 第23题:

    单选题
    Given: What is the result?()
    A

    The code runs with no output.

    B

    An exception is thrown at runtime.

    C

    Compilation fails because of an error in line 20.

    D

    Compilation fails because of an error in line 21.

    E

    Compilation fails because of an error in line 23.

    F

    Compilation fails because of an error in line 25.


    正确答案: F
    解析: 暂无解析

  • 第24题:

    单选题
    1. package foo; 2.  3. import java.util.Vector; 4.  5. protected class MyVector Vector { 6. init i = 1; 7. public MyVector() { 8. i = 2; 9. } 10. } 11.  12. public class MyNewVector extends MyVector { 13. public MyNewVector() { 14. i = 4; 15. } 16. public static void main(String args[]) { 17. MyVector v = new MyNewVector(); 18. } 19. } What is the result?()
    A

     Compilation succeeds.

    B

     Compilation fails because of an error at line 5.

    C

     Compilation fails because of an error at line 6.

    D

     Compilation fails because of an error at line 14.

    E

     Compilation fails because of an error at line 17.


    正确答案: A
    解析: 暂无解析