Hi Friend,

Try the following code:

import java.util.*;
class  StringExample{
    public static String removeCharAt(String s, int pos) {
   StringBuffer buf = new StringBuffer( s.length() - 1 );
   buf.append( s.substring(0,pos) ).append( s.substring(pos+1) );
   return buf.toString();
}

    public static void main(String[] args){
        Scanner input=new Scanner(System.in);
        System.out.print("Enter String: ");
        String st=input.nextLine();
        System.out.print("Enter first integer: ");
        int index1=input.nextInt();
        System.out.print("Enter second integer: ");
        int index2=input.nextInt();
        String st1=st.substring(index1,index1+1);
        String st2=st.substring(index2,index2+1);
        String str1=removeCharAt(st,index1);
        String str=new StringBuffer(str1).insert(index1, " ").toString();
        String str2=removeCharAt(str,index2);
        String newString=removeCharAt(str2,index1);
        String st3="",st4="";
        char ch1=st1.charAt(0);
        char ch2=st2.charAt(0);
        if(Character.isLowerCase(ch1)){
         st3=st1.toUpperCase();
        }
        else if(Character.isUpperCase(ch1)){
         st3=st1.toLowerCase();
        }
        if(Character.isLowerCase(ch2)){
         st4=st2.toUpperCase();
        }
        else if(Character.isUpperCase(ch2)){
         st4=st2.toUpperCase();
        }
       StringBuffer buffer=new StringBuffer(newString);
       buffer.insert(index1,st3).insert(index2,st4);
       System.out.println(buffer.toString());
    }
}

Thanks

THAK YOU VERY MUCH !!! GOD BLESS YOU !!! I will be trying this code now and see if it is correct or not ok ?...

Thank you.