About Memory allocation by new()

[vijayk kumar]

Dear Members,

I am glad to be a member of this forum.
I have a simple question:
If the jvm allocates memory for objects at runtime then how it is possible for compiler to allocate memory on calling new() for a constructor and then executing the constructor.

This mean both these memories are different?

[Ernest Friedman-Hill]

Hi,

Welcome to JavaRanch!

Memory allocation happens when a program is running; the compiler doesn't allocate memory for anything. You may have read in a book that when you write

new Foo()

the compiler generates the instructions to allocate memory for a Foo object, and then to call its constructor; that is correct. But all the compiler does is put these instructions into the class files; it isn't until the program is executed that these instructions are carried out. Thus the compiler decides when to allocate memory, but it's up to the JVM to actually do it.

[vijayk kumar]

Thanks for giving an indepth answer.
I have been looking for a source like this and Ranchers or really helping people like me.