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Emacs: My awesome Java environment
by torstein @ skybert dot net
Hi, I'm Torstein 👋
- Been in ❤ with Emacs since 2000
I've used many Java plugins/packages
- java-mode (2000 → 2001)
- JDEE (2001 → 2009)
- gtags
- jtags
- Malabar (2011 → 2012)
- JDIbug (2009 → 2011)
- eclim (2013 → 2017)
- Meghanada (2017 → 2018)
- lsp-java (2018 → present)
My requirements
- Zero conf: Easily setup a new Java project
- Fast: must handle large projects
- Large meaning ~7000 classes (Tomcat has 2200)
- Easy to switch between projects
Seeing is believing
Will use a wee app, cheese-shop to show the Java features in Emacs.
- Auto completion
- Code navigation
- Jump to source of 3rd party libraries
- Import classes
- Static import methods and fields
- Run JUnit tests from within Emacs
- Linting
- Unused variables
- Wrong syntax
- Missing generics
- Implement missing class
- Implement missing method
- Debug application from within Emacs
- Debugger with conditional break points
- Refactoring: rename variable
- Refactoring: extract to variable
- Refactoring: extract to method