- Jigsaw模块化功能
- JS Shell、JLink、JHSDB
- CMS被废弃
- JDK模块化加载，瘦身
- AOT(Ahead of Time Compilation)
- 接口私有方法
- jshell
- try with resource改进
- FileInputStream s1 = new FileInputStream("");
- FileOutputStream o1 = new FileOutputStream("");
- try (s1;o1){}
- 下划线不能单独成为变量名，后续会成为关键字
- String从char[]改为byte[]
- stream加强，集合加强
- list.of()
- map.of()
- copyof()