Comparable interface

Comparable interface implementation

For object sorting

 package comparator.sorting;  
 import java.util.ArrayList;  
 import java.util.Collections;  
 import java.util.Comparator;  
 import java.util.List;  
 public class Animals implements Comparable<Animals> {  
      String name;  
      String breed;  
      String color;  
      public Animals() {  
           // TODO Auto-generated constructor stub  
      }  
      public Animals(String name, String breed, String color) {  
           this.name = name;  
           this.breed = breed;  
           this.color = color;  
      }  
      public String getName() {  
           return name;  
      }  
      public String getBreed() {  
           return breed;  
      }  
      public String getColor() {  
           return color;  
      }  
      public int compareTo(Animals o) {  
           // TODO Auto-generated method stub  
           return this.name.compareTo(o.getName());  
      }  
      public static void main(String[] args) {  
           List<Animals> animalList = new ArrayList<Animals>();  
           animalList.add(new Animals("Lion", "cat", "yellow"));  
           animalList.add(new Animals("tiger", "cat", "yellow"));  
           animalList.add(new Animals("puma", "cat", "back"));  
           Collections.sort(animalList);  
           for (int i = 0; i < animalList.size(); i++) {  
                System.out.println(animalList.get(i).getName());  
           }  
      }  
 }