What is the difference between Integer and int?

[chinmay.sahoo]

Integer defined in java. lang package which is a class, whereas int is a primitive data type defined in the Java language itself.

 

[Jigard]

Integer is a wrapper class for int which is a primitive data type. Integer is used when int can't suffice. For example: In generics, the type of the generic class, method or variable cannot accept a primitive data type. In that case Integer comes to rescue.

 

[umesh11]

Integer refers to wrapper type in Java whereas int is a primitive type. Everything except primitive data types in Java is implemented just as objects that implies Java is a highly qualified pure object-oriented progamming language. If you need, all primitives types are also available as wrapper types in Java.

 

[samir09]

int is a primitive type. Variables of type int store the actual binary value for the integer you want to represent. int.parseInt("1") doesn't make sense because int is not a class and therefore doesn't have any methods.