Checkstyle configuration

Guys,

Can anyone please let me know on how to write a XML checkstyle configuration for a project that I have in eclipse? I mean how to write a customized one according to some specific coding rules that we follow? Can anyone please share some idea on this?

Are you asking for the configuration file syntax? If so, see http://checkstyle.sourceforge.net/config.html .

Or are you asking how to write new rules to check? If so, what specific rule are you attempting to write?

I want to know how I can write new customized rules? For example, I want a rule that checks for an if else condition and warns me that I should always prefer ternary operators. Any good resource from Checkstyle that would help me acheive this? Help appreciated.