Variable in Java MCQs Exercise II
Ques 1
Variable
What is the default value of an uninitialized boolean variable in Java?
A true
B false
C 0
D null
Ques 2
Variable
Which of the following is not a valid variable name in Java?
A smallcode
B _smallcode
C 123smallcode
D $smallcode
Ques 3
Variable
Which data type should be used to store a single character in Java?
A char
B int
C String
D byte
Ques 4
Variable
Which of the following is not a valid variable declaration in Java?
A int x = 10;
B float y = 3.14f;
C boolean isTrue = true;
D var z = 5;