enum should not be used as an identifier since it is a reserved keyword from source level 1.5 on

问题描述：

在Java代码中将变量名命名为enum，导致Eclipse报错：

'enum' should not be used as an identifier since it is a reserved keyword from source level 1.5 on

解决办法：

在工程属性中，将 Compiler compliance level 降为1.4，并且 Use default compliance settings