# What are Integers?
**Integers** are numbers that can be written without a fractional component. For example 1,2,3,4,5 are all integers; whereas. 1.2,3.4,4.5 are not.

# Integers in Java
Integers in Java are represented in 2’s complement binary where each integer gets `32-bits` of space.
In 32- bits of space, where one bit is used to represent the sign, you can represent that many values. 



>The `maximum positive number` would be `2^31 - 1`.

# Why 31-bits?

The 32nd bit is used to represent the sign; hence, we use 31-bits for the number. If the `first bit is 1 and all the other 31 bits are 0` then the number will be the `maximum negative number`. 




class MaxInt {
    public static void main( String args[] ) {
    System.out.println(Integer.MAX_VALUE);
    }
}

`Integer.MAX_VALUE` represents the maximum positive integer value that can be represented in 32 bits (i.e., `2147483647`). This means that no number of type Integer that is greater than 2147483647 can exist in Java.



What is Integer.MAX_VALUE?

What are Integers?

Integers in Java

Why 31-bits?