A. alloc
B. malloc
C. new malloc
D. new
Java Mcqs
Java Programming MCQS:Here are some multiple choice questions on Java that will test your knowledge of the subject. For these, look at each answer and choose one to know more about how it applies in a practical situation with an explanation from our experts if necessary!
Which one is true about a constructor ?
A. A constructor must have the same name as the class it is declared within.
B. A constructor is used to create objects.
C. A constructor may be declared private
D. All of the above
Which symbol is used to contain the values of automatically initialized arrays?
A. Brackets
B. Braces
C. Parentheses
D. Comma
Which one is a template for creating different objects ?
A. An Array
B. A class
C. Interface
D. Method
What is garbage collection in the context of Java?
A. Java deletes all unused java files on the system.
B. Memory used by the object with no reference is automatically reclaimeD.
C. The JVM cleans output of Java program with error.
D. Any unused package in a program automatically gets deleteD.
Java language was initially called as _______
A. Sumatra
B. J++
C. Oak
D. Pine
Which variables are created when an object is created with the use of the keyword ‘new’ and destroyed when the object is destroyed?
A. Local variables
B. Instance variables
C. Class Variables
D. Static variables
Data type long literals are appended by ____
A. Uppercase L
B. Lowercase L
C. Long
D. Both A and B
Which of these is returned by operator ‘&’ ?
A. Integer
B. Character
C. Boolean
D. Float
Which of these have highest precedence?
A. ()
B. ++
C. *
D. >>