Data Types - Java Quiz Questions and Answers

(11) Which one does not have a valueOf(String) method?

[A] Integer

[B] Boolean

[C] Long

[D] Short

Answer: Option [D]

Java Data Type Short does not have a ValueOf(String) method. The other data types Integer, Boolean, Long, Char, Float, Double have support for the ValueOf(String) method.

(12) Which of the following is NOT an example of a data type?

[A] int

[B] public

[C] boolean

[D] double

Comment

Answer: Option [B]

public is not a data type. It is a Java Access modifier. The other Access modifiers are private and protected.

(13) Int, long, byte, short are the data types of _____data types?

[A] unsigned

[B] signed

[C] both [A] and [B]

[D] None of these

Comment

Answer: Option [B]

(14) Which of the following is correct?

[A] int a = 16, a>>2 = 4

[B] int b = -8, b>>1 = -4

[C] int a = 16, a>>>2 = 4

[D] All of the above

Comment

Answer: Option [D]

(15) Which of the following is the mutable wrapper class?

[A] Integer

[B] BigInteger

[C] Boolean

[D] Character

Comment

Answer: Option [B]

Java wrapper classes are immutable. BiInteger are mutable.

Data Types and Variables - Multiple Choice Questions with Answers on Core Java

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Data Types and Variables - Multiple Choice Questions with Answers on Core Java

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