package ch5;

/**
 * 注意：排序需要实现Comparable接口，并重写compareTo方法
 * 元素相同需要重写equals方法
 * 若存储在hash*（如HashSet、HashTable、HashMap等）的容器中，则元素相同还需要重写hashcode方法
 * 
 */
public class Name /*implements Comparable*/ {
	
	private String firstName, lastName;
	
	public String getFirstName() {
		return firstName;
	}

	public void setFirstName(String firstName) {
		this.firstName = firstName;
	}

	public String getLastName() {
		return lastName;
	}
 
	public void setLastName(String lastName) {
		this.lastName = lastName;
	}

	public Name(String firstName, String lastName) {
		this.firstName = firstName;
		this.lastName = lastName;
	}

	public String toString() {
		return firstName +"." + lastName;
	}

	
	@Override
	
	public boolean equals(Object obj) {
		if(obj instanceof Name) {
			Name n = (Name)obj;
			if(firstName.equals(n.firstName) && lastName.equals(n.lastName))
				return true;
		}
		
		return super.equals(obj);
	}
	
	@Override
	public int hashCode() {
		return firstName.hashCode();
	}
	
	/*
	@Override
	public int compareTo(Object obj) {
		Name n = (Name) obj;
		int lastCmp = lastName.compareTo(n.lastName);
		return lastCmp != 0 ? lastCmp: firstName.compareTo(n.firstName);
	}
	*/
}