static, global, local variable & volatile....

[somalanka]

where are static, global, local variables stored in memory..... and how is volatile different from these.......

[peeyush_jain]

All local variables are stored in the stack frame of the Sub/Function in which they are defined. Therefore, the address of local variables may vary with each invocation of the Sub/Function in which they are defined (because they are created each time the Sub/Function is executed, and destroyed upon exit). It is unsafe to return a pointer to a local variable, since the storage for that variable is released when the Sub/Function ends.

Conversely, GLOBAL and STATIC variables are stored in the main data memory area, so their address stays constant for the duration of the program module, so returning a pointer to a GLOBAL or STATIC variable is quite safe.

[kumar.suresh]

In case of volatile variable ,memory addresses are always available in chache memory hence when we need fast execution of some variable , Volatile variable is very usefull .

[veeraraghavane]

what is the difference between java and javascript?