// Textbook fragment 02.01
public class ThisTester {
  public int dog = 2;   // instance variable
  public void clobber() {
    int dog = 5;        // a different dog!
    System.out.println("The dog local variable = " + dog);
    System.out.println("The dog field = " + this.dog);
    }
  public static void main(String args[]) {
    ThisTester t = new ThisTester();
    t.clobber();
  }
}