Breaking News: Grepper is joining You.com. Read the official announcement!

how to override compareto method in java

Deepika Sahu answered on December 24, 2022 Popularity 8/10 Helpfulness 3/10

answer how to override compareto method in java

how to override compareto method in java

Comment

// Java Program to show how to override the compareTo()
// method of comparable interface
import java.util.*;
 
// implementing Comparable interface
public class GFG implements Comparable<GFG> {
 
    String name;
    int age;
 
    // Class constructor
    GFG(String name, int age)
    {
        this.name = name;
        this.age = age;
    }
    public int getage() { return age; }
    public String getname() { return name; }
    public static void main(String[] args)
    {
        // Creating GFG class object
        GFG ob[] = new GFG[4];
 
        // Inserting elements in the objects
        ob[0] = new GFG("Aayush", 14);
        ob[1] = new GFG("Ravi", 12);
        ob[2] = new GFG("Sachin", 19);
        ob[3] = new GFG("Mohit", 20);
 
        // sort the array,using overridden method
        Arrays.sort(ob);
 
        for (GFG o : ob) {
 
            // printing the sorted array objects name and
            // age
            System.out.println(o.name + " " + o.age);
        }
 
        // if you want to create a dynamic array ,then you
        // can create an arraylist
        ArrayList<GFG> objects = new ArrayList<>();
 
        // creating a new GFG object
        GFG newObject1 = new GFG("Rohan Devaki", 20);
 
        // inserting the new object into the arraylist
        objects.add(newObject1);
 
        // creating a new GFG object
        GFG newObject2 = new GFG("Algorithammer", 22);
 
        // inserting the new object into the arraylist
        objects.add(newObject2);
 
        // using Collections to sort the arraylist
        Collections.sort(objects);
 
        for (GFG o : objects) {
            // printing the sorted objects in arraylist by
            // name and age
            System.out.format("%s  %d\n", o.name, o.age);
        }
    }
    // Overriding compareTo() method
    @Override public int compareTo(GFG o)
    {
        if (this.age > o.age) {
 
            // if current object is greater,then return 1
            return 1;
        }
        else if (this.age < o.age) {
 
            // if current object is greater,then return -1
            return -1;
        }
        else {
 
            // if current object is equal to o,then return 0
            return 0;
        }
    }
}

Popularity 8/10 Helpfulness 3/10 Language java

Source: www.geeksforgeeks.org

Tags: compareto java

Link to this answer
Share Copy Link

Contributed on Dec 24 2022

Deepika Sahu

0 Answers Avg Quality 2/10

how to override compareto method in java

Contents

More Related Answers

how to override compareto method in java

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.