JAVA CONCEPTS

Important Java Mcq 1

Which of the following is not true about J2EE?

a. J2EE stands for Java 2 Enterprise Edition.

b. J2EE environment is not used for developing and deploying enterprise applications.

c. J2EE specifications as defined by Sun Microsystems Inc.

d. The J2EE platform is one of the best platforms for the development and deployment of enterprise applications.

Answer:

b. J2EE environment is not used for developing and deploying enterprise applications.

Explanation

J2EE is an environment for developing and deploying enterprise applications. In fact, it is one of the best platforms for the development and deployment of enterprise applications.

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