IDEA简介
- 截止到2021.08.31，是全世界最流行的Java集成开发环境
tips
快捷键
- ctrl + alt + v：快速生成方法返回值接收代码
- /** + enter：生成javaDoc注释
IDEA常见error
Error: java: System Java Compiler was not found in classpath
- Project Settings > Compiler > Java Compiler
- changed the drop down Use compiler from Javac to Eclipse
Error:java: source level should be comprised in between '1.3' and '1.9' (or '5', '5.0', ..., '9' or '9.0'): 12
- Preferences部分设置
- Preferences > Compiler > Java Compiler > Use compiler, 选javac
- Project bytecode version，选8，根据project sdk来确定
- Target bytecode version，选8，与Project bytecode version保持一致
- Project structure部分设置
- Project structure > project > project sdk，选择1.8
- Project language level，选SDK default
- Modules > source > language level, 选Project default