title: what method can i use to change format 12 hours time to 24 hour time
body: <p>I have a task to change format 12 hours time to 24 hours time. What is the method i have to use?
  for example:
  time like 10.30 AM, 09.12 AM, 09.00 AM
  How can I Change to format 24 hours time in java ?</p>