Tag: java

Questions Related to java

Which of the following java doesnt support?
java

  1. signed number

  2. unsigned number

  3. signed right shift

  4. unsigned left shift

Show answer
Correct Option: B

what does the symbol means in java?
java

  1. logical NOT

  2. logical OR

  3. logical AND

  4. logical XOR

Show answer
Correct Option: A

which symbol denotes current working directory?
java

  1. . (dot)

  2. !

  3. %

  4. *

Show answer
Correct Option: A

­­_______ is the ability to do multiple tasks at the same time
java

  1. multithreading

  2. multitasking

  3. multiprograming

  4. multiprocessing

Show answer
Correct Option: A

_________ defines how the component will be arranged in the container
java

  1. layout manager

  2. outline manager

  3. component design

  4. component manager

Show answer
Correct Option: A

Overriding and Overloading is for ?

java

  1. Methods and variables

  2. Class

  3. Variables

  4. Methods

Show answer
Correct Option: D

For a subclass outside the package, the protected member can be accessed through ?

java

  1. Object of super class

  2. Inheritance

  3. Both

  4. None

Show answer
Correct Option: B

Which, inserted independently at line 6, will compile? (Choose all that apply.)
java

  1. static void doStuff(int... doArgs) { }

  2. static void doStuff(int x, int... doArgs) { }

  3. static void doStuff(int[] doArgs) { }

  4. static void doStuff(int... doArgs, int y) { }

Show answer
Correct Option: A,B

Which variables have the longest scope?

java

  1. Block variables

  2. Instance variables

  3. Static variables

  4. Local variables

Show answer
Correct Option: C

Which are the default value for the Primitives and Reference Types ?
java

  1. Object reference =null

  2. double =0.0

  3. byte=0

  4. char = '\u0000'

Show answer
Correct Option: A,B,C,D