What is Log4J and Where it is Used..?

Log4J is a Open Source framework/debugging
Log4J is from ASF(Apache Software Foundation)
Log4J is Written in Java

No Project can Exist without Log4J (in Java)
Every Project in Java Most be Used Log4J

What is Logging :

 Logging is the act of recording the events occurred in the execution of application

Quick Shortcuts for My Eclipse

• control-F4 - close current editor window
• control-shift-F4 - close all editor windows
• control-F6 - switch between editor windows
• control-F7 - switch between views
• control-F8 - switch between perspectives
• control-space - code completion
• control-1 - quick fix
• F3 - (or control-click) - jumps to the class/method at your cursor
• F4 - shows class hierarchy
• F11 - launch the last debug configuration (in debug mode)
• Alt-r, followed by t - stop the debug configuration
• F12 - give focus to the editor window
• Highlight text and control-/ - comment/uncomment code
• control-j - incremental find
• control-m - expand/contract current editor window
• control-shift-f - format code
• control-shift-g - searches for references to selected class/method/etc
• control-shift-o - organize imports (automatically fix your class imports)
• control-shift-r - open resource - great search utility
• control-shift-t - open type (Java class/interface finder)
• Standard Windows shortcuts also apply (home, end, control-home, control-end, control-leftArrow, control-rightArrow, all these in combination with shift, etc)

Eclipse Tutorials

http://www.avajava.com

Eclipse Tutorials with Real time Example for best Practicing