dog.java

一个很不错的网上小型购物系统

package test;

public class Dog implements Comparable {
	private String name;

	private int age;

	public Dog(String name, int age) {
		this.name = name;
		this.age = age;
	}

	public Dog(String name) {
		this.name = name;
		age = 1;
	}

	public String toString() {
		return name + " " + age;
	}

	public boolean equals(Object obj) {
		if (obj instanceof Dog) {
			Dog dog = (Dog) obj;
			return name.equals(dog.name);
		} else {
			return false;
		}
	}

	public int hashCode() {
		return name.hashCode();
	}

	public int compareTo(Object o) {
		Dog dog = (Dog) o;
		return this.name.compareTo(dog.name);
	}
}