Local vs instance variable

Question

Can a same name variable be instance and local ?

Answer 1

Just adding to what Denise Roßberg has mentioned in his answer.

It is possible to have same name for both instance and local variables because local variables have a block level scope. They can be accessed only within the block { } in which they are defined.

On the other hand, instance variables have a class level scope and can be accessed anywhere within the class.

One doesn't know about the other.

Answer 2

Yes. To avoid conflicts you need to use the keyword this.

For example you have an instance variable int number and also a local variable int number.

If you mean the local variable you can write number. And if you mean your instance variable you have to write this.number.