1.what is a java class
Java is an object-oriented programming language. A Class is like an
object constructor, or a "blueprint" for creating objects.

2.what is a method in java
A method is a block of code which only runs when it is called.
Methods are used to perform certain actions, and they are also known as functions.

3.what is a variable
Variables are typically used to store information which your Java program needs to do its job.
It is a piece of memory that can contain a data value.

4.write else if as a switch
what is a switch?
The switch statement or switch case in java is a multi-way branch statement.

5.what is an array?
An array is a container object that holds a fixed number of values of a single type.
Each item in an array