Write a program to find out all possible unique subString present in a given string

import java.util.Scanner;   public class  JavaInhouseSubstring {    public static void main(String args[])    {       String str, sub;       int i, c, length;               str  = "substring";         length = str.length();         System.out.println("Substrings of \""+str+"\" are :-");         for( c = 0 ; c < length ; c++ )       {          for( i = 1 ; i <= length - c ; i++ )          {             sub = str.substring(c, c+i);             System.out.print(sub+" ");          }       }    } }

OutPut: 

 subString present in a given string