title: How do you check to see if the 1st letter in a string is equal to something?
body: <p>In my if statement, I'm trying to check if the first letter of a <code>string</code> is either <code>Y</code> or <code>y</code>, and then proceed as such. Below is what I have, but I don't believe it to be correct.</p>
  
  <pre><code>System.out.print("Do you wish to do another calculation (Yes/No): ")
        option = scan.next();
           if (option.substring(0,1) == "N" &amp;&amp; option.substring(0,1) == "n" )
           {
              System.out.println("Have a good day");
              System.exit(0);
           }
  bmi.setOption(option);
  </code></pre>
  
  <p>I instantiated <code>option</code> as <code>String option = " ";</code> earlier on in my program. I know how to check if strings equal a certain character, however am having trouble checking to see if only the FIRST character of the string is equal to something.</p>
  
  <p>Thank you!</p>