Local Variable

Question

why is it necessary to initialize local variables before using it?

Vulpes · Answer

Precisely! The Java compiler issues an error if you haven't initialized the variable before usage to prevent such a bug from occurring. Unlike C/C++ Java is a very safe language.

Pratiyush Anand · Answer

but sir it throws compile time error if not initialized before usage.It is not getting any random data in it.

Vulpes · Answer

It's necessary to initialize a local variable before using it because if you didn't the variable would contain whatever random data happened to be in its memory slot at the time. This could lead to some serious and hard to find bugs.