Bug 5765 New Class button in empty workspace should be more supportive
User feedback: "Confused how to create my first project" We should be more supportive in the UI for this special case since it is a first time experience with the UI. Therefore when the workbench is empty we should offer to create a new Java project. Minimal solution is to show an info dialog that explains that user should create a project first and offer a button to open the Java project wizard. The same is true for the new package and new interface buttons.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/ContainerPage.java
public void changeControlPressed(DialogField field) {
			containerChangeControlPressed(field);
		}
		
		
		public void dialogFieldChanged(DialogField field) {
			containerDialogFieldChanged(field);
		}
	}
	
	private void containerChangeControlPressed(DialogField field) {
		
		IPackageFragmentRoot root= getPackageFragmentRoot();
		root= chooseSourceContainer(root);
		if (root != null) {
			setPackageFragmentRoot(root, true);
		}
	}
	
	private void containerDialogFieldChanged(DialogField field) {
		if (field == fContainerDialogField) {
			fContainerStatus= containerChanged();