cannot resolve symbol variable

cannot resolve symbol :错误! "jsp1.jsp": cannot find symbol; symbol : variable Num, locat cannot find symbol错误 cannot find symbol;错误 "useradd.jsp":cannot find symbol; symbol :method print(),loc JAVA中报错i cannot be resolved to a variable java:Cannot refer to a non-final variable tx inside an inner cannot decide resolve choose区别 symbol是什么意思 resolve和solve的区别? variable nd什么意思