Using Eclipse's shortcut keys can greatly improve the program's development efficiency. How to view shortcut keys: Windows---Preferences, General and keys
F3 opening a statement
F4 Open Type Hierarchy
F5 One-step jump in
F6 Single-Step Skip
F7 Single Step Back
F8 continue
F11 Debug Last Boot
F12 Activation Editor
ALT +-Display System Menu
Alt + LEFT ARROW back history
ALT + RIGHT Arrow forward history
ALT +/Content Assist
Ctrl +/Note
Ctrl + \ Uncomment
Ctrl + F Find and replace
Ctrl + J Incremental Lookup
Ctrl + H to open the Search dialog box
Ctrl + K to find the next
Ctrl + L go to Line
Ctrl + N New
Ctrl + Z Undo
Ctrl + F4 off
Ctrl + Shift + F6 Previous editor
Ctrl + Shift + B Add/Remove breakpoints
Ctrl + Shift + F formatting
Ctrl + Shift + K Find Previous
Ctrl + Shift + S all save
Ctrl + Shift + W Toggle Editor
Ctrl + Shift + F4 all off
Ctrl + Shift + F6 Previous editor
Ctrl + Shift + F7 previous view
Ctrl + Shift + F8 Previous perspective
Alt + Shift + DOWN ARROW to restore previous selection
Alt + Shift + UP ARROW Select Package element
Alt + Shift + M Extraction method
Alt + Shift + R Rename
Alt + Shift + J add Javadoc comment
Eclipse Common shortcut keys