JAVA CONCEPTS

Important Java Mcq 1

an entire implicit object is accessed using?

a. Classes

b. Methods

c. Objects

d. Variables

Answer:

c. objects

Explanation:

JSP implicit objects are created during the translation phase. These objects can be directly used in scripts that go in the service method. They are created by the container automatically, and they can be accessed using objects.

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