What is the difference between GET and POST method in java?

Get and Post are both the method of HTML form element and they are used to transfer data with the request when the submit button is pressed as:
 

<form action="firstServlet" method="get">     

         <table>

            <tr> <td>

                 <input type="Text" name="UsrName"/>

            </td> </tr>

            <tr><td>

                 <input type="Text" name="pswd"/>

           </td> </tr>

            <tr><td>

                 <input type="submit" name="submit" value="Submit"/>

           </td></tr>

        </table>

</form>

In the above code we have two text box’s  user name and password and one submit button, When we click on the submit button after putting values in the user name and password boxes the control will transfer to the “firstServlet” servlet with the user name and password entered.

The main differences between GET and POST method are as follow.

 

GET	POST
Get request contents are visible in URL	Post request contents are embedded in the body of HTTP request
Get method can only contain data up to 255k	NO such limit for post method
Get request can be cached	Post request contents are not a part of URL so they cannot be cached
Get requests are usually faster than post requests	They are slower than get because they need some extra time to encapsulate in the body of request
Get is a by default method of HTML form element	Post method need be specified for use
Get request can only contain the text data	Post can contain text as well as binary data