This are some of the shortcut keys that I find useful while working with Eclipse . Key Action Ctrl+/ Comment out the current line Ctrl+\ Uncomment the current line Ctrl+D Delete the current line Ctrl+M Maximize editor view Ctrl+Alt+Arrow Up Duplicate current line, maintain caret location Ctrl+Alt+Arrow Down Duplicate current line, move caret location down Ctrl+Shift+p Find matching bracket Window Navigation Ctrl+F7 Move to different views. Ctrl+F6 Move to different editor windows Alt+Shift+Q+C Focus Console View Alt+F7 Switch between different consoles Misc Ctrl+O Quick Outline