1、Method/Class “XXX” is never used步骤File–>Settings–>Editor–>Inspections–>Java–>Declaration redundancy–>取消勾选Unused declaration

2、Typo-In word “” more…(Ctrl+F1) 拼写检查（这个不太建议消除，单词拼错影响阅读）步骤File–>Settings–>Editor–>Inspections–>Spelling–>取消勾选Typo

3、access can be package-private步骤File–>Settings–>Editor–>Inspections–>Java–>Declaration redundancy–>取消勾选Declaration access can be weaker

 4、取消显示形参名提示步骤File–>Settings–>Editor–>General–>Appearance–>取消勾选Show parameter name hints