SCJP: Declarations and Access Control

1. Garbage collection is performed by a low priority thread.
Ans: True

2. Garbage collection can not be forced to happen.
Ans: True

3. The following definition for main method (an entry point of a java application) is valid.

public static void Main(String args[])

Ans: False

4. The “null” is a reserved java keyword.

Ans: True

5. The following variable declaration is valid in java.

byte b=128;

Ans: False

6. The “char” type in java is 16 bit and signed.

Ans: False

7. Which method is used to request for garbage collection?

Ans: System.gc()

8. The default value of Boolean in java is ___.

Ans: false

9. The garbage collector will usually call on object’s ___ method just before the object is garbage collected.

Ans: finalize

10. The following declaration of array type in java is correct.

int number[]=new number[12];

Ans: false