if u have instance variables in class so memory for all instance variable will be allocated in heap. not in stack stack is for method variable

hi,

actually static variables ,local variables ,method parameters are stored in stack.somany stacks are created(one stack per one thread)

instance variables and java objects are stored in heap.only heap is created.

cheers

siva

stored in heap and the reference variables are stored in stack.if heap is filled then out of memory exception occurs

(a) Simply put, all Java Objects are allocated memory in Heap.

(b) Primitives types (not *array* of primitives) and references to objects are allocated on the stack.

(c) Importantly, each thread in the JVM gets it own stack and the VM option

-Xss decides the stack size for each thread.

Note: If the stack size is too small, eventually you see "StackOverflowError".

Example:class FooBar{    

public void get(MyTest obj)   // obj a reference to an object - stack.   

{          

int x = 10;    // Stack         

Vector tmpObj=new Vector(); // Heap         

...         

...   

}

}

Note:  tmpObj will be garbage collection based on the rules 

(like reference count and others) that GC maintains to check its life span.