In essence, what is a variable in programming?

Answer 1

A variable stores any type of "values"
It can be integer, double floating points(decimal number), character or even strings(letters)

Here is an example:
int i = 7;
char ch = 'a';
float d = 6.735;
string name = "Rahul";

And when you are going to use it
Just call it

System.out.println(i);
System.out.println("ch");
Similarly, you can call other types also in similar ways

So, declare the type, assign a value, and use it anywhere !!!
I hope u got that

Answer 2

Very thanks.