没有显示错误，但是运行不了

public class Outer {

private String name= "你好！";

public void show() {

class Inner{

int year=2018;

public int newYear() {

return year+1;

}

}

Inner i=new Inner();

int newyear=i.newYear();

System.out.println(name +newyear);

}

public static void main(String[] args) {

Outer o=new Outer();

o.show();

}

}

运行后是这样的

Error occurred during initialization of boot layer

java.lang.module.FindException: Error reading module: C:\Users\Administrator\Workspaces\MyEclipse CI\Lei\bin

Caused by: java.lang.module.InvalidModuleDescriptorException: Outer$1Inner.class found in top-level directory (unnamed package not allowed in module)

几个意思？