问题
In eclipse compiler window Java 13 is not showing.
How to enable JDK compilance level 13 for eclipse 2019-09 / How to update JavaSE-13 support for project Buildpath .
回答1:
For supporting Java 13 in eclipse there are two types of methods to follow
1. Drag install button from the following link into eclipse
Install button highlighted in red color.
Drag Install button for Installing Java 13 support for eclipse
- After dragging into eclipse IDE confirm window is displayed like below.
- Click on Confirm button
- Select I accept the terms of the license agreement
- Click on Finish button
A Software Updates window will be open once installation completes -> Click on Restart Now button.
2. Installation using link
- Goto Help in eclipse -> Install New Software
- Click on add button Name: 4.13 builds, Location: Paste following at loation textbox https://download.eclipse.org/eclipse/updates/4.13-P-builds
Install Window
- Check Eclipse Java 13 support for 2019-09 development stream
- Click on Next -> Next -> Select I Accept xxxx agreement button -> Finish
- You check the installation progress in Progess View(Window -> Show View -> Other -> Under General folder -> Progress -> Click on Open)
- A Software Updates window will be open once installation completes -> Click on Restart Now button.
Finally Goto Window -> Preferences -> Java -> Compiler -> Select 13 from dropdown-> Apply -> Apply and Close.
- Compiler Settings Changed window will appear -> Click on Yes button.
Java 13 Compiler support for Eclipse 2019-09
来源：https://stackoverflow.com/questions/58398023/java-13-support-for-eclipse