wrapper classes in Java

Packing class:

Conversions between basic types and wrapper classes

Boxing: The basic type is converted into a wrapper class, so that it has the nature of the object, but also can be divided into manual boxing and automatic boxing.

int i=10;

Integer x=new integer (i); Manual Boxing

Integer y=i; Automatic Boxing

Unpacking: In contrast to boxing, the wrapper class object is converted into a basic type of value, which can be divided into manual unpacking and automatic unpacking.

Integer j=new integer (8);

int M=j.intvalue (); Manual unpacking as int type

int n=j; Automatic unpacking to int type

wrapper classes in Java