JAVA CONCEPTS

Important Java Mcq 1

Are java and javascript the same thing?

a. Yes

b. No

Answer:

b. No

Explanation:

Java and Javascript are 2 completely different languages. Java is object oriented language used to create desktop apps and mobile apps while Javascript is used for developing websites.

The \u0021 article referred to as a

a) Unicode escape sequence b) Octal escape c) Hexadecimal d) Line feed Answer: a) Unicode escape sequence

What will be the output of the following?

a) metal b) metalmetal c) nullmetal d) The code does not compile. Answer: d) The code does not compile. Explanation The local variable chair may

Is the method overriding a combination of inheritance and polymorphism?

a) True b) False Answer: a) True Explanation: For method overriding, a method with the same signature in both superclass and subclass is required with

Which of the following declarations does not compile?

a) double num1, int num2 = 0; b) int num1, num2; c) int num1, num2 = 0; d) int num1 = 0, num2 = 0;