java - "class, interface, or enum expected" error when trying to create package -

i'm trying declare package in file follows:

import java.util.*;  package rtg;  public class generate {     // ... }

but i'm getting error when try compile this:

generate.java:3: class, interface, or enum expected package rtg;

why getting error?

it should

package rtg; import java.util.*; public class generate{ }

in java first define package imports , class. see wiki here: java_package , oracle's tutorial here: java packages

edit

now call genereate class class in same folder rtg folder:

package rtg; public class gui{      generate gen = new generate(); }

make sure words spelled correctly.

Score