orc.java

经典java书籍《thinking in java（第三版）》的源码

//: c06:Orc.java
// The protected keyword.
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
import com.bruceeckel.simpletest.*;
import java.util.*;

class Villain {
  private String name;
  protected void set(String nm) { name = nm; }
  public Villain(String name) { this.name = name; }
  public String toString() {
    return "I'm a Villain and my name is " + name;
  }
}

public class Orc extends Villain {
  private static Test monitor = new Test();
  private int orcNumber;
  public Orc(String name, int orcNumber) {
    super(name);
    this.orcNumber = orcNumber;
  }
  public void change(String name, int orcNumber) {
    set(name); // Available because it's protected
    this.orcNumber = orcNumber;
  }
  public String toString() {
    return "Orc " + orcNumber + ": " + super.toString();
  }
  public static void main(String[] args) {
    Orc orc = new Orc("Limburger", 12);
    System.out.println(orc);
    orc.change("Bob", 19);
    System.out.println(orc);
    monitor.expect(new String[] {
      "Orc 12: I'm a Villain and my name is Limburger",
      "Orc 19: I'm a Villain and my name is Bob"
    });
  }
} ///:~