title: cannot find symbol with isLowerCase
body: <p>I took this code directly out of Thinking in java 4th edition and it keeps giving me 'cannot find symbol: method isLowerCase(Char). Is the book wrong, do I maybe not have the character class with all my files, or am I doing a really really really stupid mistake?</p>
  
  <pre><code>public class ListCharacters{
      public static void main(String[] args) {
          for(char c = 0; c &lt; 128; c++)
              if(Character.isLowerCase(c))
                  System.out.println("value:"+(int)c+ " character: " + c);
      }
  }
  </code></pre>