//printing all the possible anagrams of string
public void anagrams(String str, int start, int end) 
    { 
        if (start == end) 
            System.out.println(str); 
        else { 
            for (int i = start; i <= end; i++) { 
                str = swap(str, start, i); 
                anagm(str, start + 1, end); 
                str = swap(str, start, i); 
            } 
        } 
    } 
    public String swap(String a, int i, int j) 
    { 
        char temp; 
        char[] charArray = a.toCharArray(); 
        temp = charArray[i]; 
        charArray[i] = charArray[j]; 
        charArray[j] = temp; 
        return String.valueOf(charArray); 
    }

// check if string b is an anagram of a or vice-versa
 public boolean check(String a,String b){
          if(a.length() != b.length()) return false;
          a = sort(a);
          b = sort(b);
          return a.equals(b);
}
public String sort(String s){
        char[] ch = s.toCharArray();
        Arrays.sort(ch);
        return String.valueOf(ch);
}