Conversion between JAVA primitive types and wrapper classes

There are eight basic data types in java, which correspond to eight packaging types. Below are the eight data primitive types and their corresponding wrapper types.

No.	basic data type	type of packaging
1	long	Long
2	int	Integer
3	short	Long
4	byte	Byte
5	float	Float
6	double	Double
7	string	String
8	boolean	Boolean

When it comes to the conversion of primitive types and wrapper types, the concepts of boxing and unboxing are mentioned.
Boxing
Converts a data primitive type to a wrapper type and gives it the properties of an object. Packing is also divided into manual packing and automatic packing.

• Manual boxing

int a = 10;
Integer b = new Integer(a);

• autoboxing

int a = 10;
Integer b = a;

Unboxing
Converts the data's wrapper type to the data's base type. Unpacking is also divided into automatic unpacking and manual unpacking.

• Manual unboxing

Integer a = new Integer(10);
int b = a.valueOf(a);

• Automatic unboxing

int b = a;