If you import a project from outside, the action method is:
File->import-->general-->existing Project into Workspace
To build a SQL Server database connection:
Add an external JARs (add External JARs), select the left Java build path, class library (libaries), right-click Project Test, properties
New project:
File-->new-->web Project:
Background operation adds a servlet
Common shortcut keys:
1.alt+/Supplemental Code
2.ctrl+d Delete the selected code and remove the space
3.shift+alt+r change all the same strings as the selected part
4.ctrl+s Save Code
5.ctrl+shift+f Formatting Code
6. Alt + Shift + J Add a document comment to the program
7.ctrl+shift+o automatically import packages that need to be imported
Shortcut keys used in debug F5 F6 F7 F8
* F5. Single step operation, encounter function call function, enter function
* F6. Single step operation, one run code, no entry function
* F7. Exit called function, return to the call point
* F8. Complete all code at once
Web project Review of Java Temperature series