Java中Static Nested Class 和 Inner Class的不同

package innerClass;
public class OutClass1 {
public int oid;
public String oname;
public static class InnerStaticClass1{
public int iid;
public String iname;
}
}

package innerClass;
import innerClass.OutClass1.InnerStaticClass1;
public class Test1 {
public static void main(String[] args) {
OutClass1 oc=new OutClass1();
InnerStaticClass1 ic=new InnerStaticClass1();
}
}

package innerClass;
public class OutClass2 {
public int oid;
public String oname;
public class InnerClass2
{
public int iid;
public String iname;
}
}

package innerClass;
public class Test2 {
public static void main(String[] args) {
OutClass2 oc=new OutClass2();
OutClass2.InnerClass2 ic=oc.new InnerClass2();
}
}