java - Code to tell whether a string is a Pangram or not? -

import java.io.*; import java.util.*;   public class solution {      public static final int n = 26;       public int check(string arr){        // int count = 0;         if(arr.length() < n){            return -1;         }         for(char c = 'a'; c <= 'z' ; c++){             if((arr.indexof(c) < 0) && (arr.indexof((char)(c + 32)) < 0)){                return -1;             }         }         return 1;     }       public static void main(string[] args) {          scanner s1 = new scanner(system.in);         string s = s1.next();         solution obj = new solution();          int d = obj.check(s);          if(d == -1)             system.out.print("not pangram");         else              system.out.print("pangram");      } } 

if string entered : "we promptly judged antique ivory buckles next prize" gives wrong output " not pangram" m not able find out wrong code thanx in advance !

the problem whitespace separator scanner.next(). when input we promptly judged antique ivory buckles next prize, s point string we. when call obj.check(s) on we return -1.

to verify case, can print s , check value. can do:

string s = "we promptly judged antique ivory buckles next prize"; 

call obj.check(s) , see return correct answer.

to fix should call scanner.nextline() instead of scanner.next():

string s = s1.nextline();