BlueJ Program On String Sorting And Swapping First And Last Character

 
                     A class SwapSort has been defined to string related manipulations on a input word.
                     Some of the members of the class are as follows
                     wrd: To store the word
                     len: length of the word
                     swapwrd: to store the swapped word
                     sortwrd: to store the sorted word
                     
                     SwapSort(): default constructor ti initialize the members with valid value
                     void readWord(): accept the word in upper case 
                     void sortWord(): sort the word in ascending order and stores in sortwrd
                     void swapChar(): Exchange the first and last character of the word and stores in swapwrd
                     void display (): Display all the words (original, swapped and sorted
                         

import java.util.*;
public class SwapSort
{
String wrd, swapwrd, sortwrd;
int len;
Scanner sc=new Scanner(System.in);
SwapSort()
{
    wrd="";
    sortwrd="";
    swapwrd="";
    len=0;
}

void readWord()
{
    System.out.print("\nEnter the word: ");
    wrd=sc.nextLine().toUpperCase();
}

void swapChar()
{
    len=wrd.length();
    System.out.println(wrd.charAt(len-1));
    swapwrd=swapwrd+wrd.charAt(len-1);
    for(int i=1;i<len-1;i++)
    swapwrd=swapwrd+wrd.charAt(i);
    swapwrd=swapwrd+wrd.charAt(0);
}
void sortWord()
{
    char c;
    char ch[]=new char[len];
    for(int i=0;i<len;i++)
    ch[i]=wrd.charAt(i);
    for(int i=0;i<len-1;i++)
    {
         for(int j=i+1;j<len;j++)
         {
             if(ch[i]>ch[j])
             {
                 c=ch[i];
                 ch[i]=ch[j];
                 ch[j]=c;
             }
         }
    }
    sortwrd=new String(ch);
                 
  }
       
void display()
{
    System.out.println("\nOriginal Word:"+wrd);
    System.out.println("\nSorted Word:"+sortwrd);
    System.out.println("\nSwapped Word:"+swapwrd);
}
    public static void main(String[] args) 
    {
    SwapSort ob=new SwapSort();
   ob.readWord();
   ob.swapChar();
   ob.sortWord();
   ob.display();
}
}