What is variable shadowing used for in a Java class?

Question

I\'m reading my Deitel, Java How to Program book and came across the term shadowing. If shadowing is allowed, what situation or what purpose is there for it in a Ja

Answer 1

It can be useful for setters where you don't want to have to create a separate variable name just for the method parameter eg:

public void setX(int x) {
    this.x = x;
}

Apart from that I'd avoid them.