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Java Multiple Choice Questions With Answers set-8


1. Using which keyword we can access value of the instance variables and class variables of that class inside the method of that class itself.

A) super

B) final

C) this

D) either super or this


2. If a variable is declared final, it must include ...................... value.

A) integer

B) no

C) initial

D) float


3. State true or false.

i) Jpanel is a class included in awt package.

ii) Anonymous classes are mostly used for event handling.

iii) Names of anonymous classes must be unique

iv) JOptionPane is an inner class

A) i-false, ii-false, iii-true, iv-true

B) i-true, ii-false, iii-true, iv-false

C) i-false, ii-true, iii-false, iv-false

D) i-true, ii-false, iii-false, iv-true


4. In java, string is a .............

A) primitive data type

B) abstract data type

C) combination of boolean

D) None of the above


5. Methods can be overloaded with a difference only in the type of the return value ..

A) Not supported

B) False

C) True

D) None of the above


6. Each method in a java class must have a unique name .

A) Not necessary

B) True

C) False

D) None of the above


7. State true or false.

i) comparisons precede logical operations in java

ii) assignment operations succeed increment operations

iii) arithmetic operations succeed comparisons

iv) x precede +

A) i-true, ii-true, iii-false, iv-true

B) i-true, ii-false, iii-true, iv-false

C) i-false, ii-true, iii-false, iv-false

D) i-true, ii-false, iii-false, iv-true


8. It is important feature of java that it always provides a default constructor to a class.

A) Not supported

B) False

C) True

D) None of the above


9. ....................... is the key to ..................

A) Serialization, persistence

B) Persistence, inheritance

C) Inheritance, object

D) Persistence, serialization


10. State true of false.

i) Public can only be assigned to class

ii) Protected protects a statement

iii) Protected method is never accessible outside the package

iv) Friendly variable may be accessible outside class

A) i-true, ii-true, iii-false, iv-true

B) i-true, ii-false, iii-true, iv-false

C) i-false, ii-true, iii-false, iv-false

D) i-true, ii-false, iii-false, iv-true

Answers:

1.  C) this
2.  C) initial
3.  C) i-false, ii-true, iii-false, iv-false
4.  B) abstract data type
5.  B) False
6.  A) Not necessary
7.  A) i-true, ii-true, iii-false, iv-true
8.  C) True
9.  A) Serialization, persistence
10.C) i-false, ii-true, iii-false, iv-false

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