title: How to check if the last char of a String is a specific char
body: <p>I have a funtion in my program that should determine if the last char of a string is a / and if not, add a / at the end, however, it always adds a /, even if the last char is a /
  Here is the code:</p>
  
  <pre><code>public static String setLastCharSlash(String check) {
      if(check.substring(check.length() - 1) != "/") {
          check = check + "/";
      }
      return check;
  }
  </code></pre>