Shadowed variable is an object reference : Method Variable « Java Source And Data Type « SCJP

1. SCJP
2. Java Source And Data Type
3. Method Variable

class Bar {
    int barNum = 28;
  }
  class MainClass {
    Bar myBar = new Bar();
    void changeIt(Bar myBar) {
      myBar.barNum = 99;
      System.out.println("myBar.barNum in changeIt is " + myBar.barNum);
      myBar = new Bar();
      myBar.barNum = 420;
      System.out.println("myBar.barNum in changeIt is now " + myBar.barNum);
    }
    public static void main (String [] args) {
      MainClass f = new MainClass();
      System.out.println("f.myBar.barNum is " + f.myBar.barNum);
      f.changeIt(f.myBar);
      System.out.println("f.myBar.barNum after changeIt is "
                         + f.myBar.barNum);
    }
  }