1. Installing the JRE
Window > Preferences > Java > Installed JREs, click Add, select Standard VM
2. Check whether automatic compilation is turned on
General > Workspace, confirm that build automatically is selected
3. Java > Build Path, make sure folder is selected
4. Java > Editor
5. Confirm that compiler compliance level matches your default JRE version
6. Configuring Tomcat
Window "–" Preferences "–" Server "–" Runtime Environments "–" Add "–" Apache "–" Apache Tomcat v7.0 "– Select the Tomcat7 directory, In the JRE, select 1) to configure the JDK.
7. Annotation style definition
"Window" – "Preferences" – "Java" – "Code Style" – "Code Templates" – Set it yourself, such as comments Types
8. Eclipse modifies the encoding format
Window–>preferences Open the Preferences dialog box, left navigation tree, navigate to General–>workspace
Reference: 1. The Java development in welcome under Help in Eclipse overview
2, http://blog.csdn.net/vvanity/article/details/51036678
The base configuration after Eclipse installation