what is the differences of these two?

[hong Li]

What is the difference between integer and Interger?

[Sharon whipple]

integer is primitive type
Integer is complex type (class)

read more here :
http://java.sun.com/docs/books/tutorial/java/nutsandbolts/datatypes.html

[Marco Ehrentreich]

Hi hong,

I'd say usually Integer (with capital I) is a Java data type for integer numbers and integer (small i) is an integer number in general without any special meaning. That simple

Marco

[Marco Ehrentreich]

@Sharon: The primitive type name is "int" not "integer". That could be confusing for Hong...

[hong Li]

thanks guys

[Rakesh Chaudhary]

int is for decalring a primitive data type.

whereas Integer is a Wrapper class.

There are some classes which take object as there arguments at that time you can use ...Integer ...so that you can wrap a int value in a object and so on.. Please see the java 5.0 autoboxing.. enhancements thanks

for i.e
int i = 10; (prim)

Integer i;(Object..)

Thanks hope it helps