Bug 56463 First page of new project wizard does not use dialog font [dialogs] [code manipulation]
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/JavaProjectWizardFirstPage.java
public void update(Observable o, Object arg) {
			final IWorkspace workspace= JavaPlugin.getWorkspace();
			final String name= fNameGroup.getName();
			
			if (name.length() == 0) { 
				setErrorMessage(null);
				setMessage(NewWizardMessages.getString("JavaProjectWizardFirstPage.Message.enterProjectName")); 
				setPageComplete(false);
				return;
			}
			
			final IStatus nameStatus= workspace.validateName(name, IResource.PROJECT);
			if (!nameStatus.isOK()) {
				setErrorMessage(nameStatus.getMessage());
				setPageComplete(false);
				return;
			}
			
			final IProject handle= getProjectHandle();
			if (handle.exists()) {
				setErrorMessage(NewWizardMessages.getString("JavaProjectWizardFirstPage.Message.projectAlreadyExists")); 
				setPageComplete(false);
				return;
			}
			final String location= fLocationGroup.getLocation().toOSString();