title: Integer.parseint in Java, exception when '+' comes first
body: <p><code>Integer.parseInt("-1000");</code> returns -1000 as the output.</p>
  
  <p><code>Integer.parseInt("+500");</code> throws an exception.</p>
  
  <p>How will I be able to recognize positive numbers with the "+" symbol before them 
  without having to trim the symbol?</p>