How to check if two strings are a valid anagram?

An Anagram is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once.

class Solution {
    public boolean isAnagram(String s, String t) {

        char[] arrS = s.toCharArray();
        char[] arrT = t.toCharArray();

        Arrays.sort(arrS);
        Arrays.sort(arrT);

        String Snew = new String(arrS);
        String Tnew = new String (arrT);

        if(Snew.equals(Tnew)){
            return true;
        }
        else return false;

    }
}