Wrapper Classes for Primitive Data Types in Java

In Java, int and Integer are not same. One is a datatype where as the other is Wrapper class.

Similarly, we have wrapper classes for various data types as follows:

int --> Integer

long --> Long

short --> Short

byte --> Byte

char --> Character

double --> Double

float --> Float

boolean --> Boolean

With the help of wrapper classes, one can even know the range the datatype accepts. For example, if you want to print range for int, we can do as follows:

System.out.print("Range of int datatype is : " + Integer.MIN_VALUE + " to " + Integer.MAX_VALUE);

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