Variables declared in static methods

Question

Hi,
I've got a question. Are variables (primitive and Objects) declared inside
static methods stored in a same memory space or are the stored separately?
I'm creating a helper class that contains static methods that canno be placed in any object in my object map.
For example
public static String SampleMethod(String passedString)
String str = new String(passedString);
...do some more processing and sleeping
return str;
Let's say Object1 and Object2 make a call to SampleMethod. Object1 passes "Object1" and right before the Object1's SampleMethod returns str, Object2 makes a call passing "Object2". What would be the value of str for Object1's SampleMethodCall?
Thanks :)

Answer 1

If speaking about class members, then static members are stored in one place and are properties of the class, when non-staic members are stored in an object's memory and a properties of an object.
However in your sample it's not the case.
Local variables of a method are most likely allocated on registers or on stack (thus being rather properties of the call to a method).
Thus in your case calls to SampleMethod done by Object1 and Object2 simultaneously (if you managed to do this in two different threads) will use different memory (most likely in threads' own stacks).
As for calls to "new String" inside your method, the new string memory will be allocated dynamically each time the new operator is called, thus producing two different objects. The references to them will be stored in two local variables of two independent calls.
Finally, Object1 will get a copy of "Object1" and Object2 will get a copy of "Object2", as expected.
Vit