选中变量之后,整个class文件中涉及到该变量都会高亮显示 变量修改操作高亮(write)Preferences -> Editor -> Color Scheme -> General -> identifier under caret(write) -> 设置底色高亮为红色,警示修改操作变量读取操作高亮 Preferences -> Editor -> Color Scheme -> General -> identifier under caret -> 设置底色高亮为绿色,表示该变量只是读取操作