strings

Main.java

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        //initialize inputs
        String string1 , ss ;//ss is substring from string1 , ex) the substring(from index i to j) and print from i to j
        int i , j ; // indexs of string1

        //read initialized
        System.out.println("enter the string to (substring) = ");
        string1 = input.nextLine();
        System.out.println("enter the first of index  ");
        i = input.nextInt();
        System.out.println("enter the last of index () ");
        j = input.nextInt();
        if (j < i)
        {
            System.out.println("enter the end of index again (end>begin) = " );
            j = input.nextInt();
        }
        //operations
        int round =0;
        while(round <string1.length())
        {
            if (round == i )
            {
                System.out.print(string1.charAt(round));

            i++;
            }
            if (i == j)
            {
                break;
            }
            round++;
        }


    }
}