title: Java Subtracting LocalDateTime foo from LocalDateTime Bar
body: <p>I know this is probably a really stupid question, however I was wondering whether there is a way to minus a local date time from another, or if not, to cast localDateTime to just Date time and then subtract from there?</p>
  
  <p>I need to be able to work out the date time difference, between the start of record foo and the start of record bar (which is also the end of Foo)</p>
  
  <p>I am rather new to java, and for simplicity's sake, I want to be able to keep it in roughly the same layout, rather than having to convert from seconds etc. </p>
  
  <p>If adding and subtracting LocalDateTime is not an option, I know that once I am in dateTime I am able to subtract them using:</p>
  
  <pre><code>Period diff = new Period(start, end);
  </code></pre>
  
  <p>Due to the purpose of the data, I need to keep both the date and the time in order for this to work, and as mentioned before, I wish to keep it fairly simple so theres no need to convert between seconds back to the date.</p>
  
  <p>My issue is really just getting it in an acceptable format, as I say, I am rather new to java and object orientation as a whole, so please don't ridicule me for this, seemingly simple, question.</p>
  
  <p>Thanks,</p>
  
  <p>Jonny</p>