JAVA CONCEPTS

Important Java Mcq 1

The process of recognizing and focusing on the important characteristics of a situation or an object is known as

a. Encapsulation

b. Abstraction

c. Polymorphism

d. Inheritance

Answer:

b. Abstraction

Explanation

The insulation of data from direct access by the program is called the data abstraction. Data abstraction also called data hiding, is the mechanism where the code and the data it manipulates are wrapped into a single unit.

Which of the following is not a type of repetition statement in java?

A. while statement B. do…while statement C. for statement D. loop statement Answer: D. loop statement Explanation: Repetition statement in java are while loop ,

How to format date from one form to another?

a) SimpleDateFormat b) DateFormat c) SimpleFormat d) DateConverte Answer: a) SimpleDateFormat Explanation: We can use the SimpleDateFormat function in java to do this! So, option

The mechanism of designing a new class based on one or more existing classes is called?

a. Polymorphism b. Inheritance c. Abstraction d. Encapsulation Answer: b. Inheritance Explanation Inheritance in Java is a mechanism in which one object acquires all the

The expression (int)(76.0252175 * 100) / 100 evaluates to

a. 76 b. 76.0252175 c. 76.03 d. 76.02 Answer: a. 76 Explanation: Firstly, 76.0252175 is multiplied by 100 we get the result as 7602.52175. Now