[异常处理1]Error occurred during initialization of boot layer

[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