In this tutorial, You learn below things
- XML Comments
- XMl Encoding
Comments are written for developer to describe about line of text or tag in XMl. These are ignored by the processor or parser during xml parse.
Comments starts with (less than,exclamation symbol and two dashes)
<!-- and ends with (two dashes followed by greater than symbol)
Comments can be single or multi line comments
Multi line comments
<!-- multiple lines comments text -->
Comment text placed in multiple lines wrapped in comment syntax. Comment text can have string text or tags.
Here is XML multiple line comments example
<users> <user id="1"> <!-- Hello This is single user comments <name>john<name> <salary>5000</salary> --> </user> </user>
Single line comments
Comments text is placed in a single line Syntax:
<!-- Comments text -->
Here is XML single line comments example
<users> <user id="1"> <!-- Hello This is single user comments --> </user> </user>
Comments can be written
- Can write in content
- Not allowed in XML attributes
- Allowed inside an tag
- nested comments are not allowed
XML Comments example
Following is an example
<!-- XML document for a list of users Each user has information id attribute, name and salary --> <users> <user id="1"> <name>john<name><!-- name of employee --> <salary>5000</salary> <!-- salary of employee --> </user> </user>
encoding used to represent the character set supported by actual xml content.
Default xml encoding is UTF-8
XML file declaration contains
encoding attribute to have support for an character content in xml.
Here is an xml declaration
<?xml version = "1.0" encoding = "UTF-8" standalone = "no" ?>
encoding can be UTF-8: used 8 bytes to represent characters, UTF-16: 16 bytes to represent characters