JSP: JSP Comments
Comments are a very simple concept in Java Server Page. To make a comment, simply enclose text in a <-- --> pair. Any text contained in these tags are commented out, and do not appear in the HTML page created by the JSP. For example:
<%-- This is a comment --%>
One of the better uses of comments is for troubleshooting. You can use JSP comments to hide specific pieces of code. You can then test the code without a particular block misssing.
In the example below, one piece of code that prints a message is commented out. Run the example from the link below. You will see that none of the comments appear in the HTML document.
1:<html> 2:<head> 3:<title>JSP Comments Example</title> 4:</head> 5:<body> 6:<h2>JSP Comments Example</h2> 7:<%-- Two expressions are listed below. Only one should print. --%> 8:<p>Ex1: This code will execute: <%= "Print this" %><br> 9:<%-- 10:Ex2: This code is commented out: <%= "Print this" %><br> 11:--%> 12:</p> 13:</body> 14:</html>