Variable shadowing

[Alpana Singh]

public class Inst{
protected int myst;
public void go(int myst){
System.out.println(myst); //1
myst=myst; //2
}
public static void main(String args[])
{
Inst a=new Inst();
a.go(5);
System.out.println(a.myst);
}
}

Why the o/p s 5 0.

[vidya sagar]

Why the o/p s 5 0.

Because local variable takes precedence of instance variable.

In this line (System.out.println(myst); //1
it prints local variable myst....so it prints 5

myst=myst; //2
in this line local variable is assign to itself
....if you want to assign to instance variable use this(this.myst=myst)


in this line System.out.println(a.myst);
it prints instance variable with default value 0

Hope you clear now