title: How to format a variable of double type
body: <p>I have a variable of double type representing a value of about 34.323423423123456. I'd like to format it to have only two decimal places (e.g. 34.32), rounded properly; e.g. 2.229934345 would become 2.23.</p>
  
  <p>I am new to Java and none the tricks I know from C# worked.</p>