JAVA CONCEPTS

Important Java Mcq 1

What is the default layout manager for an Applet?

a. FlowLayout

b. BorderLayout

c. GridLayout

d. CardLayout

Answer:

a. FlowLayout

Explanation

The flow layout is the default layout manager for all panel objects and applets. It places the panel components in rows according to the width of the panel and the number and the size of the components.

In Java control statements break, continue, return, try-catch-finally, and assert belong to?

a) Select statements b) Loop Statements c) Transfer statements d) Pause Statement Answer c) Transfer statements

Which of the following is a mutable class in java?

a) java.lang.String b) java.lang.Byte c) java.lang.Short d) java.lang.StringBuilder Answer d) java.lang.StringBuilder

Which of the following are not Java keywords?

a) Double b) Switch c) Then d) Instanceof Answer: c) Then

Which of the following are valid array declarations?

a. int number(); b. float average[]; c. counter int[]; d. []double marks; Answer: b. float average[]; Explanation: The correct syntax for declaring an array is