What is the difference between local and global variables in Java?

Can you explain the difference between local and global variables in Java?

Sure! In Java, local variables are declared within a method or block and can only be accessed there. Global variables, often referred to as instance variables, are declared within a class but outside any method, making them accessible to all methods in the class.

Can you give me an example of each?

Of course! A local variable example would be a variable declared inside a method like this: void myMethod() { int localVar = 5; }. A global variable example would be: class MyClass { int globalVar; } where globalVar can be accessed by any method in MyClass.

What happens if I try to access a local variable outside its method?

If you try to access a local variable outside its method, you'll get a compilation error because the variable is not in scope.

Are there any best practices for using these variables?

Yes! It's best to use local variables for temporary data and keep global variables to a minimum to avoid unintended side effects.