java例程练习（Comparable接口）

import java.lang.Comparable;
import java.util.List;
import java.util.LinkedList;
import java.util.Collections;

public class TestCompareTo {

    public static void main(String[] args) {
        List l1 = new LinkedList();

        l1.add(new Name("Karl", "M"));
        l1.add(new Name("Stever", "Lee"));
        l1.add(new Name("John", "O"));
        l1.add(new Name("Tom", "M"));

        System.out.println(l1);

        Collections.sort(l1);
        System.out.println(l1);

    }
}

class Name implements Comparable{
    private String firstName;
    private String lastName;

    Name(String firstName, String lastName) {
        this.setFirstName(firstName);
        this.setLastName(lastName);
    }

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

    public String getFirstName() {
        return firstName;
    }

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

    public String getLastName() {
        return lastName;
    }

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

    public boolean equals(Object obj) {
        if(obj instanceof Name) {
            Name name = (Name) obj;
            return (firstName.equals(name.firstName)) &&
                   (lastName.equals(name.lastName));
        }
        return super.equals(obj);
    }

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

    public int compareTo(Object o) {
        Name n = (Name) o;
        int lastCmp = lastName.compareTo(n.lastName);
        return (lastCmp != 0 ? lastCmp : firstName.compareTo(n.firstName));
    }

}

摘自 Yours风之恋

补充：软件开发 , Java ,