Bug 30667 create 'subpackage' when doing create new package with a package selected
It should be possible to quickly create a new package as a subpackage of an already existing package. A suggestion: upon activating the new>package menu from a selected package, the name field in the dialog box could already contain the name of the selected package (possibly with the name completely selected). Just appending a ".foo" would suffice to create a subpackage thereof.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/NewPackageWizardPage.java
public void dialogFieldChanged(DialogField field) {
			fPackageStatus= packageChanged();
			
			handleFieldChanged(PACKAGE);
		}
	}
		
			
	/*
	 * @see org.eclipse.jdt.ui.wizards.NewContainerWizardPage#handleFieldChanged(String)
	 */
	protected void handleFieldChanged(String fieldName) {
		super.handleFieldChanged(fieldName);
		if (fieldName == CONTAINER) {
			fPackageStatus= packageChanged();