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programming languages Online Quiz - 295

Description: programming languages Online Quiz - 295
Number of Questions: 20
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Tags: programming languages
Attempted 0/20 Correct 0 Score 0

If I would need to attach document ina field what type of field has to be created?

  1. Text

  2. Attach Text

  3. Text Lite

  4. Rich Text


Correct Option: D

Given: 55. int []x= {1, 2,3,4, 5}; 56.int y[] =x; 57. System.out.println(y[2]); Which is true?

  1. Line 57 will print the value 2

  2. Line 57 will print the value 3

  3. Compilation will fail because of an error in line 55

  4. Compilation will fail because of an error in line 56


Correct Option: B
  1. Line 35 will not compile.

  2. Line 36 will not compile

  3. Line 37 will not compile.

  4. Line 38 will not compile.


Correct Option: A,D

Given: 10. public class Fabric 11. public enum Color { 12. RED(0xff0000), GREEN(0x00ff00), BLUE(0x0000ff); 13. private final int rgb; 14. Color( int rgb) { this.rgb = rgb; } 15. public int getRGB() { return rgb; } 16. }; 17. public static void main( String[] argv) { 18. // insert code here 19. } 20. } Which two code fragments, inserted independently at line 18, allow the Fabric class to compile? (Choose two.)

  1. Color skyColor = BLUE;

  2. Color treeColor = Color.GREEN;

  3. Color purple = new Color( 0xff00ff);

  4. if( Color.RED.ordinal() < Color.BLUE.ordinal() ) {}


Correct Option: B,D

Given: 11. public enum Title { 12. MR(”Mr.”), MRS(”Mrs.”), MS(”Ms.”); 13. private final String title; 14. private Title(String t) { title = t; } 15. public String format(String last, String first) { 16. return title + “ “ + first + “ “ + last; 17. } 18. } 19. public static void main(String[] args) { 20. System.out.println(Title.MR.format(”Doe”, “John”)); 21. } What is the result?

  1. Mr. John Doe

  2. An exception is thrown at runtime

  3. Compilation fails because of an error in line 12

  4. Compilation fails because of an error in line 15


Correct Option: A

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?

  1. 1 2 3

  2. Compilation fails because of an error in line 12.

  3. Compilation fails because of an error in line 13

  4. Compilation fails because of an error in line 14


Correct Option: A
  1. Foo.beta() is a valid invocation of beta().

  2. Foo.alpha() is a valid invocation of alpha().

  3. Method beta() can directly call method alpha().

  4. Method alpha() can directly call method beta().


Correct Option: B,C

A programmer needs to create a logging method that can accept an arbitrary number of arguments. For example, it may be called in these ways: logIt(”log message 1 “); logIt(”log message2”,”log message3”); logIt(”log message4”, “log message5”, “log message6); Which declaration satisfies this requirement?

  1. public void logIt(String * msgs)

  2. public void logIt(String [] msgs)

  3. public void logIt(String... msgs)

  4. public void logIt(String msg1, String msg2, String msg3)


Correct Option: C

Given: 10. class One { 11. public One foo() { return this; } 12. } 13. class Two extends One { 14. public One foo() { return this; } 15. } 16. class Three extends Two { 17. // insert method here 18. } Which two methods, inserted individually, correctly complete the Three class? (Choose two.)

  1. public void foo() { }

  2. public int foo() { return 3; }

  3. public Two foo() { return this; }

  4. public Object foo() { return this; }


Correct Option: C,D
  1. int foo() { /* more code here */ }

  2. void foo() { /* more code here */ }

  3. public void foo() { /* more code here */ }

  4. protected void foo() { /* more code here */ }


Correct Option: B,C,D
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