[WICKET-2856] PackageStringResourceLoader.loadStringResource() causes NullPointerException when used in a Class within the root package (i.e. it has no package declaration)

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.4.7
• Fix Version/s: 1.4.9, 1.5-M1
• Component/s: wicket
• Assignee: Igor Vaynberg
• Reporter: Dirk Meuser
• Created: 04/May/10 13:41
• Updated: 18/May/10 22:08
• Resolved: 18/May/10 21:50

Description

Cause is the line

String packageName = clazz.getPackage().getName();

because Class.getPackage() [respectivly Package.getPackage(Class)] returns null if a class has no dot in its full qualifier.

Example (from the Java Doc for org.apache.wicket.model.StringResourceModel):

-------------------- CODE ------------------------
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.model.StringResourceModel;

public class MyPage extends WebPage {

public MyPage()

{ add(new Label("username", new StringResourceModel("label.username", this, null))); }

}
-------------------- CODE ------------------------

If this class is in the root directory (no package declaration as above) a NullPointerException is thrown.