CodePudding user response:

How can interface methods have method body..

CodePudding user response:

You are using is java8? Try to java9

CodePudding user response:

I what also don't know, what also can't say ah, JDK with higher version 9 or 9 + line, and later development, interface don't write inside the method body

CodePudding user response:

refer to the second floor luckyZQC response:

you use java8? Try to java9

Replaced by a java9 of idea in the program is running will have any impact
What if we need to reconfigure the environment variables

CodePudding user response:

reference 3 floor also night reply:

we don't know, what also can't say ah, JDK with higher version 9 or 9 + line, and later development, interface inside don't write method body

?? For java9, what need to pay attention to some questions among them,
Such as the environment variable configuration... What needs to be changed

CodePudding user response:

You are a person use? Enterprise with eight more commonly, there may be conflicts with 9, want to consider are you own use or others to use, the discharge to the same place, the environment variable package name changed

CodePudding user response:

Good understanding of the

CodePudding user response:

refer to 6th floor luckyZQC response:

you are a man? Enterprises with 8 more commonly, there may be conflicts with 9, want to consider are you own use or others to use, the discharge to the same place, environment variables changed the package name to

Good, understand??