Check if the Sentence Is Pangram

A pangram is a sentence where every letter of the English alphabet appears at least once.

Given a string sentence containing only lowercase English letters, return true if sentence is a pangram*, or false otherwise.*

LeetCode Problem - 1832

class Solution {
    public boolean checkIfPangram(String sentence) {
        // Initialize a boolean variable to true
        boolean check = true;
        // Loop through ASCII values of lowercase letters (97 to 122)
        for (int i=97; i<123; i++){
            // Reset check to true for each iteration
            check = true;
            // Loop through characters in the sentence
            for(int j=0; j<sentence.length(); j++){
                // If the ASCII value matches a character in the sentence
                if(i == sentence.codePointAt(j)){
                    // Set check to false and break out of the loop
                    check = false;
                    break;
                }
            }
            // If the character is missing from the sentence, return false
            if(check) return false;
        }
        // If all characters are present, return true
        return true;
    }
}