JAVA CONCEPTS

Important Java Mcq 1

To declare a constant max_length as a member of the class, you write?

a. Final static float MAX_LENGTH = 99.98;

b. Final static MAX_LENGTH = 99.98;

c. Final double MAX_LENGTH = 99.98;

d. Final static double MAX_LENGTH = 99.98;

Answer:

d. Final static double MAX_LENGTH = 99.98;

Explanation:

MAX_LENGTH defines the maximum length of data value. While declaring MAX_LENGTH as a member of the class, you need to use the final keyword (By using final keyword the value can’t be changed), static keyword, and double because the value is a floating point number.

The conditional AND operator in java, c++, and c# is ____.

a. | b. & c. || d. && Answer: d. && Explanation: && is the conditional AND operator used in Java, C++ and C#.

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

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 ,

Java uses two stage for program execution.They are

a) Compiler and system b) Compiler and instructions c) Compiler and interpreter d) None of the above Answer c) Compiler and interpreter