单选题1.public class test (  2.public static void main (String args[])    {  3.int  i = 0xFFFFFFF1;  4.int  j = ~i;  5.    6.}  7.)    What is the decimal value of j at line 5?()A0B1C14D–15EAn error at line 3 causes compilation to fail.FAn error at line 4 ca

题目
单选题
1.public class test (  2.public static void main (String args[])    {  3.int  i = 0xFFFFFFF1;  4.int  j = ~i;  5.    6.}  7.)    What is the decimal value of j at line 5?()
A

 0

B

 1

C

 14

D

 –15

E

 An error at line 3 causes compilation to fail.

F

 An error at line 4 causes compilation to fail.


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更多“单选题1.public class test (  2.public static void main (String args[])    {  3.int  i = 0xFFFFFFF1;  4.int  j = ~i;  5.    6.}  7.)    What is the decimal value of j at line 5?()A  0B  1C  14D  –15E  An error at line 3 causes compilation to fail.F  An error ”相关问题
  • 第1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2题:

    1.public class test (  2.public static void main (String args[])    {  3.int  i = 0xFFFFFFF1;  4.int  j = ~i;  5.    6.}  7.)    What is the decimal value of j at line 5?()  

    • A、 0
    • B、 1
    • C、 14
    • D、 –15
    • E、 An error at line 3 causes compilation to fail.
    • F、 An error at line 4 causes compilation to fail.

    正确答案:C

  • 第3题:

    public class ForBar {   public static void main(String args) {   int i = 0, j = 5;   tp: for (;;) {   i ++;   for(;;)   if(i > --j) break tp;   }   system.out.printIn(“i = ” + i + “, j = “+ j);   }   }   What is the result? () 

    • A、 The program runs and prints “i=1, j=0”
    • B、 The program runs and prints “i=1, j=4”
    • C、 The program runs and prints “i=3, j=4”
    • D、 The program runs and prints “i=3, j=0”
    • E、 An error at line 4 causes compilation to fail.
    • F、 An error at line 7 causes compilation to fail.

    正确答案:A

  • 第4题:

    2. public class Foo implements Runnable (  3. public void run (Thread t) {  4. system.out.printIn(“Running.”);  5. }  6. public static void main (String[] args)  {  7. new thread (new Foo()).start(); 8. )  9. )   What is the result?()      

    • A、 An exception is thrown.
    • B、 The program exists without printing anything.
    • C、 An error at line 1 causes compilation to fail.
    • D、 An error at line 6 causes the compilation to fail.
    • E、 “Running” is printed and the program exits.

    正确答案:C

  • 第5题:

    1.public class Test {  2.public static void main (String args[]) {  3.class Foo {  4.public int i = 3;  5.}  6.Object o = (Object) new Foo();  7.Foo foo = (Foo)o;  8.System.out.printIn(foo. i); 9. }  10.}   What is the result?()  

    • A、 Compilation will fail.
    • B、 Compilation will succeed and the program will print “3”
    • C、 Compilation will succeed but the program will throw a ClassCastException at line 6.
    • D、 Compilation will succeed but the program will throw a ClassCastException at line 7.

    正确答案:B

  • 第6题:

    单选题
    interface foo {   int k = 0;   }    public class test implements Foo (   public static void main(String args) (    int i;   Test test = new test ();   i= test.k;   i= Test.k;   i= Foo.k;   )   )   What is the result? ()
    A

     Compilation succeeds.

    B

     An error at line 2 causes compilation to fail.

    C

     An error at line 9 causes compilation to fail.

    D

     An error at line 10 causes compilation to fail.

    E

     An error at line 11 causes compilation to fail.


    正确答案: D
    解析: 暂无解析

  • 第7题:

    单选题
    1. class A {  2. public String toString ()  {  3. return “4”;  4. }  5. }  6. class B extends A {  7. public String toString ()   {  8. return super.toString()  + “3”;  9. }  10. }  11. public class Test {  12.   public static void main(String[]args)  {  13.      System.out.printIn(new B());  14.      }  15. }    What is the result?()
    A

     Compilation succeeds and 4 is printed.

    B

     Compilation succeeds and 43 is printed.

    C

     An error on line 9 causes compilation to fail.

    D

     An error on line 14 causes compilation to fail.

    E

     Compilation succeeds but an exception is thrown at line 9.


    正确答案: C
    解析: 暂无解析

  • 第8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9题:

    单选题
    package test1;  public class Test1 {  static int x = 42;  }  package test2;  public class Test2 extends test1.Test1 {  public static void main(String[] args) { System.out.println(“x = “ + x);  }  }  What is the result?()
    A

     x = 0

    B

     x = 42

    C

     Compilation fails because of an error in line 2 of class Test2.

    D

     Compilation fails because of an error in line 3 of class Test1.

    E

     Compilation fails because of an error in line 4 of class Test2.


    正确答案: E
    解析: 暂无解析

  • 第10题:

    单选题
    1.public class test (  2.public static void main (String args[])    {  3.int  i = 0xFFFFFFF1;  4.int  j = ~i;  5.    6.}  7.)    What is the decimal value of j at line 5?()
    A

     0

    B

     1

    C

     14

    D

     –15

    E

     An error at line 3 causes compilation to fail.

    F

     An error at line 4 causes compilation to fail.


    正确答案: B
    解析: 暂无解析

  • 第11题:

    单选题
    1.public class Test {  2.public static void main (String args[]) {  3.class Foo {  4.public int i = 3;  5.}  6.Object o = (Object) new Foo();  7.Foo foo = (Foo)o;  8.System.out.printIn(foo. i); 9. }  10.}   What is the result?()
    A

     Compilation will fail.

    B

     Compilation will succeed and the program will print “3”

    C

     Compilation will succeed but the program will throw a ClassCastException at line 6.

    D

     Compilation will succeed but the program will throw a ClassCastException at line 7.


    正确答案: C
    解析: 暂无解析

  • 第12题:

    单选题
    public class Test {  public static void replaceJ(string text)  {  text.replace (‘j’, ‘l’);  }  public static void main(String args[])  {  string text = new String (“java”)  replaceJ(text);  system.out.printIn(text);  }  }      What is the result?()
    A

     The program prints “lava”

    B

     The program prints “java”

    C

     An error at line 7 causes compilation to fail.

    D

     Compilation succeeds but the program throws an exception.


    正确答案: A
    解析: 暂无解析

  • 第13题:

    1. class A {  2. public String toString ()  {  3. return “4”;  4. }  5. }  6. class B extends A {  7. public String toString ()   {  8. return super.toString()  + “3”;  9. }  10. }  11. public class Test {  12.   public static void main(String[]args)  {  13.      System.out.printIn(new B());  14.      }  15. }    What is the result?()  

    • A、 Compilation succeeds and 4 is printed.
    • B、 Compilation succeeds and 43 is printed.
    • C、 An error on line 9 causes compilation to fail.
    • D、 An error on line 14 causes compilation to fail.
    • E、 Compilation succeeds but an exception is thrown at line 9.

    正确答案:B

  • 第14题:

    1. interface foo {  2. int k = 0;  3. } 4.    5. public class test implements Foo (  6. public static void main(String args[]) (  7. int i;  8. Test test = new test ();  9. i= test.k;  10.i= Test.k;  11.i= Foo.k;  12.)  13.)  14.        What is the result?()  

    • A、 Compilation succeeds.
    • B、 An error at line 2 causes compilation to fail.
    • C、 An error at line 9 causes compilation to fail.
    • D、 An error at line 10 causes compilation to fail.
    • E、 An error at line 11 causes compilation to fail.

    正确答案:A

  • 第15题:

     public class Test {  public static void replaceJ(string text)  {  text.replace (‘j’, ‘l’);  }  public static void main(String args[])  {  string text = new String (“java”)  replaceJ(text);  system.out.printIn(text);  }  }      What is the result?()  

    • A、 The program prints “lava”
    • B、 The program prints “java”
    • C、 An error at line 7 causes compilation to fail.
    • D、 Compilation succeeds but the program throws an exception.

    正确答案:B

  • 第16题:

    1. interface TestA { String toString(); }  2. public class Test {  3. public static void main(String[] args) {  4. System.out.println(new TestA() {  5. public String toString() { return “test”; }  6. }  7. }  8. }  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:A

  • 第17题:

    interface foo {   int k = 0;   }    public class test implements Foo (   public static void main(String args) (    int i;   Test test = new test ();   i= test.k;   i= Test.k;   i= Foo.k;   )   )   What is the result? ()

    • A、 Compilation succeeds.
    • B、 An error at line 2 causes compilation to fail.
    • C、 An error at line 9 causes compilation to fail.
    • D、 An error at line 10 causes compilation to fail.
    • E、 An error at line 11 causes compilation to fail.

    正确答案:A

  • 第18题:

    单选题
    public class ForBar {   public static void main(String args) {   int i = 0, j = 5;   tp: for (;;) {   i ++;   for(;;)   if(i > --j) break tp;   }   system.out.printIn(“i = ” + i + “, j = “+ j);   }   }   What is the result? ()
    A

     The program runs and prints “i=1, j=0”

    B

     The program runs and prints “i=1, j=4”

    C

     The program runs and prints “i=3, j=4”

    D

     The program runs and prints “i=3, j=0”

    E

     An error at line 4 causes compilation to fail.

    F

     An error at line 7 causes compilation to fail.


    正确答案: C
    解析: 暂无解析

  • 第19题:

    单选题
    1. public class ForBar  {  2. public static void main(String []args)   {  3.   int i = 0, j = 5;  4. tp: for (;;)  {  5. i ++;  6. for(;;)  7. if(i > --j) break tp;  8. }  9. system.out.printIn(“i = ” + i + “, j = “+ j);  10. }  11. }   What is the result?()
    A

     The program runs and prints “i=1, j=0”

    B

     The program runs and prints “i=1, j=4”

    C

     The program runs and prints “i=3, j=4”

    D

     The program runs and prints “i=3, j=0”

    E

     An error at line 4 causes compilation to fail.

    F

     An error at line 7 causes compilation to fail.


    正确答案: D
    解析: 暂无解析

  • 第20题:

    单选题
    public class test (    public static void main (String args) {    int i = 0xFFFFFFF1;  int j = ~i;   }    )   What is the decimal value of j at line 5?()
    A

     0

    B

     1

    C

     14

    D

     –15

    E

     An error at line 3 causes compilation to fail.

    F

     An error at line 4 causes compilation to fail.


    正确答案: C
    解析: 暂无解析

  • 第21题:

    单选题
    1. interface TestA { String toString(); }  2. public class Test {  3. public static void main(String[] args) {  4. System.out.println(new TestA() {  5. public String toString() { return “test”; }  6. }  7. }  8. }  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: A
    解析: 暂无解析

  • 第22题:

    单选题
    1. class A {  2. public int getNumber(int a) {  3.     return a + 1;  4. }  5. }  6.    7. class B extends A {  8. public int getNumber (int a) {  9. return a + 2  10. }  11.    12. public static void main (String args[])  {  13. A a = new B();  14. System.out.printIn(a.getNumber(0));  15.    } 16. }     What is the result?()
    A

     Compilation succeeds and 1 is printed.

    B

     Compilation succeeds and 2 is printed.

    C

     An error at line 8 causes compilation to fail.

    D

     An error at line 13 causes compilation to fail.

    E

     An error at line 14 causes compilation to fail.


    正确答案: A
    解析: 暂无解析

  • 第23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

  • 第24题:

    单选题
    1. interface foo {  2. int k = 0;  3. } 4.    5. public class test implements Foo (  6. public static void main(String args[]) (  7. int i;  8. Test test = new test ();  9. i= test.k;  10.i= Test.k;  11.i= Foo.k;  12.)  13.)  14.        What is the result?()
    A

     Compilation succeeds.

    B

     An error at line 2 causes compilation to fail.

    C

     An error at line 9 causes compilation to fail.

    D

     An error at line 10 causes compilation to fail.

    E

     An error at line 11 causes compilation to fail.


    正确答案: A
    解析: 暂无解析