Difference between log methods

Question

I am new in android and i print log-cat using:

Log.w(\"Tag\", \"String text\");

and log text print but after searching for a time i find so

Answer 1

The various single-letter methods indicate the severity of the log message. Subsequently, you can filter log messages based on both the tag and the severity, and prevent lesser-severity messages from being shown in your released application (for example).

For more information:

http://developer.android.com/guide/developing/debugging/debugging-log.html