Sorting the Arraylist on the basis of the property in the Object

Using the interface Comparable we Sort the name in the Student Class.

Ex:



package com.learn;

public class Student implements Comparable<Student>{
    private int sno;
    private String sname;
   
    public int compareTo(Student other) {
        return sname.compareTo(other.sname);
    }

    public int getSno() {
        return sno;
    }
    public void setSno(int sno) {
        this.sno = sno;
    }
    public String getSname() {
        return sname;
    }
    public void setSname(String sname) {
        this.sname = sname;
    }
   
   

}

Main Program

package com.learn;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class Test {
    public static void main(String[] args) {
       
        List<Student> normalOrder = new ArrayList<Student>();
        Student st= new Student();
        st.setSname("Rahim");
        st.setSno(101);
        Student st1= new Student();
        st1.setSname("John");
        st1.setSno(102);
        Student st2= new Student();
        st2.setSname("Ram");
        st2.setSno(103);
        normalOrder.add(st);
        normalOrder.add(st1);
        normalOrder.add(st2);
        Collections.sort(normalOrder);
        System.out.println(normalOrder.get(0).getSname());
        System.out.println(normalOrder.get(1).getSname());
        System.out.println(normalOrder.get(2).getSname());
       
    }
}

the O/P for the above Program is :
John
Rahim
Ram