eclipse use
step 1. Creating a project
File - New - Project
step 2. Creating a class in the project
Class names usually start with an uppercase letter.
<Setting>
* At the upper right side is Open Perspective icon -> you can check Views which are useful in developing projects.
* Font edition : Window - Preferences - General - Appearance
* When you accidentally close a important menu like Package Explorer, Window - Show View - Package Explorer
<Keyboard shortcut>
* Auto alignment key : Ctrl+Shift+f
* Debug : f11
* Content assist : Ctrl + Space bar
ex) System.out.println(); keyboard shortcut : "syso" + Ctrl + spacebar + enter
* Annotation key : Ctrl+Shift+/
* Remove annotation : Ctrl+Shift+\
* Font size control : Ctrl+'+' and Ctrl +'-'
* Remove a line : Ctrl + d