According to the network video lesson I use notepad to compile a "Hello, world" to run the program, the notepad suffix. TXT instead. The discovery after the Java file icon display abnormal, with CMD runtime error: need to class, interface, enum,
Think there is something wrong with the notepad coding, after finding out information my notepad coding is utf-8
Install the JDK and environment variable is according to the online classes step
Wish elder give directions, thank you very much!

CodePudding user response:

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CodePudding user response:

You don't write in Chinese is no utf-8, post your code to the
First of all, you this is a class file, inside the code is also need to write the class

CodePudding user response:

refer to the original poster gaodianli response:

lesson according to the network video I use notepad to compile a "Hello, world" to run the program, the notepad suffix. TXT instead. The discovery after the Java file icon display abnormal, with CMD runtime errors: also need to class, interface, enum,
Think there is something wrong with the notepad coding, after finding out information my notepad coding is utf-8
Install the JDK and environment variable is according to the online classes step
Wish elder give directions, thank you very much!

Notepad try save as, choose utf-8 encoding, and then save

CodePudding user response:

You write the code must have a problem, and finally is written in the IDEA, can you check out the problem in advance

CodePudding user response:

The name of the class or interface name

CodePudding user response:

Onlookers... Suggest to stick down the code, perform commands and errors

CodePudding user response:

bosses, this is the code I wrote,

CodePudding user response:

This is changing. My exception after the Java icon and the teacher's normal icon contrast