[异常描述]
Error occurred during initialization of boot layer
java.lang.module.FindException: Error reading module: E:\Users\Administrator\eclipse-workspace\Example0\bin
Caused by: java.lang.module.InvalidModuleDescriptorException: helloMyJava.class found in top-level directory (unnamed package not allowed in module)
方法1： 新建一个包，将默认包中的类文件拖入新建包中，刷新，默认包会消失
