错误：找不到或加载主类-每当我创建新的Java文件时

Question

I'm currently working on a group project. We are using Eclipse to make a Java program and using e-git (Eclipse extension) to work together.

For some reason today, whenever I try to make a new Java file in the package, it shows me the following error:

Error: Could not find or load main class projectPackage.filename

I have no idea what is causing the error as it was working fine yesterday.

Answer 1

如果创建了一个新程序包并尝试在其中创建Java文件，会发生什么情况？