Java Questions & Answers

Which of these selection statements test only for equality?

• if

• switch

• if & switch

• none of the above mentioned

Which of these are selection statements in Java?

• if()

• for()

• continue

• break

Which of this statement is incorrect?

• switch statement is more efficient than a set of nested ifs

• two case constants in the same switch can have identical values

• switch statement can only test for equality, whereas if statement can evaluate any type of boolean expression

• it is possible to create a nested switch statements

What will be the output of the following Java program?

• 1

• 2

• 3

• 4

Which of the following is not a valid jump statement?

• break

• goto

• continue

• return

The while loop repeats a set of code while the condition is not met?

• True

• False

What is it called if an object has its own lifecycle and there is no owner?

• Aggregation

• Composition

• Encapsulation

• Association

Method overriding is combination of inheritance and polymorphism?

• True

• False

Which statement is true about java?

• Platform independent programming language

• Platform dependent programming language

• Code dependent programming language

• Sequence dependent programming language

What is the extension of java code files?

• .class

• .java

• .txt

• .js