Hi

object is one of the user defined class in java.using which you can define your own data type which can store your any type of data like integer numeric character(no limit on storage) etc...where as primitive data type are short int float char etc..these all data types has some limitation in storage and type of data you would to store.

so finally what i am saying is object is the super class and user defined type.where as primitive data type are predefined data types which is designed by who develop the java software.

Thanks

Ram.

Adding to the above the one important difference between object and primitive type is that when you pass them as parameters to a method

1.the object is passed by reference where as

2.the primitive is passed by value.

Thanks

Radhika

OBJECTS SIT ON HEAP

PRIMITIVES (LIKE INT DOUBLE ETC) SIT ON STACK

STACK IS FASTER THAN HEAP.

OBJECTS ARE PASSED BY REFERENCE. PRIMITIVES ARE PASSED BY VALUE.

OBJECTS ARE GARBAGE COLLECTED. PRIMITIVES ARE CLEARED FROM THE STACK BY MOVING THE STACK POINTER UP AND DOWN.