Sample code for Sorting String in ascending order

Try out these Programs

(a)
package pack1;
import java.util.*;
import java.lang.*;

import pack1.Orderly;

public class Example{
   public static void main(String args[]){
        String name = "";
        ArrayList list=new ArrayList();
        Orderly orderly = new Orderly ();
        try
        {
              list=orderly.displayRecordNew();
              Collections.sort(list);
              /*
                 Sorts the array list
                 If We have to Sort the Name in Descending Order then we have to uncomment the 
                 below commented lines.
                 Comparator r = Collections.reverseOrder();
                 Collections.sort(list,r);
              */
              Iterator l1 = list.iterator();        
              while(l1.hasNext()){
                  orderly  = (Orderly)l1.next();
                  name = orderly.getOrderlyName();
                  System.out.println("Name is " + name);
              }
        }
        catch(Exception e)
        {
        }
   }

}

(b)
package pack1;
import java.util.*;
import java.io.*;
import java.io.File;
import java.io.FileInputStream;

class Orderly implements Comparable<Orderly>{

    public String nameDesig = "a";
    private String name;
    public void setOrderlyName(String name){
        this.name = name;
    }
    public String getOrderlyName(){
        return name;
    }
    //Overriding the compareTo method
    public int compareTo(Orderly o){
        return (this.name).compareTo(o.name);
    }       
    public ArrayList displayRecordNew() throws Exception
    {
        File file = new File("C://Users//Radio1//Desktop//Names.txt");
        FileInputStream fis = null;
        StringTokenizer st;

        ArrayList showRecord=null;           
        try {
            showRecord=new ArrayList();               
            fis = new FileInputStream(file);
            /*
               FileInputReader since we have to sort out the names in ascending order from the file                        Names.txt
            */
            BufferedReader d = new BufferedReader(new InputStreamReader(fis));
            String readingFromFile = "";
            String intoArrayList = "";
            while((readingFromFile = d.readLine()) != null)
            {

                /*

                   Now We are using StringTokenizer to read the names from the FileList since  the Names  are separated using comma in the File and the resultant one by one we will store it in the ArrayList which we will sort it out using Collections.sort(list); 

                   Since this class (Orderly) is imported in the class Example it will automatically sort out the List  and we will get the Names in Ascending Order on further iteration of the List

                */
                st = new StringTokenizer(readingFromFile, ",");
                while (st.hasMoreTokens())
                {
                    Orderly orderly=new Orderly();
                    intoArrayList = st.nextToken();
                    orderly.setOrderlyName(intoArrayList);
                    showRecord.add(orderly);
                }
            }
        }
        catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        return showRecord;
    }

}

(c)Names.txt will have the following contents

Seshadri,Lakshmi,Padma,Balaji,Koushick,Hari,Sudarshan,Anirudh,Sriram,Rajagopalan,Mahesh,Zombia,Karthick,Raghavendra,Mahati,Kamran

(d)Now on running the Example.java file we get the following as Result(Sorted Out)

Name is Anirudh

Name is Balaji

Name is Hari

Name is Kamran

Name is Karthick

Name is Koushick

Name is Lakshmi

Name is Mahati

Name is Mahesh

Name is Padma

Name is Raghavendra

Name is Rajagopalan

Name is Seshadri

Name is Sriram

Name is Sudarshan

Name is Zombia