Are Local variables Thread Safe?

[Suni Kr]

Hi everyone,
I know that variables declared inside a service method(local variables) are thread safe. Can some one give me an example and explain how are the variables thread safe.

Thank you,
Suni.

[Nathaniel Stoddard]

Simply put, there's just nobody else out there that has access to the variable once you've defined it locally.

public void do() {
    Object o = new Object();
    // who can find o?  Yeah -- um, nobody!
}

Now, if you did something crazy like telling everybody else (threads) in your program about "o", then you would have a possible synchronization issue. But until that happens, local variables are nothing to worry about.

[Sanjeev Kaushik]

Simple Funda - each thread has their own copy of local variables, hence threadsafe