Bug 114740 [build path] Configuring JREs from New Java Project wizard does not update list
I20051102-0010 - open the New Java Project wizard - click on JDK > Configure default... - change a JRE name or add/remove JREs => in the New Java Project wizard, the combo with the JREs is not updated I would also rename the link to 'Configure JREs...', since you can do more on that page than choosing the default.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/JavaProjectWizardFirstPage.java
if (name.length() == 0) { 
				setErrorMessage(null);
				setMessage(NewWizardMessages.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.JavaProjectWizardFirstPage_Message_projectAlreadyExists); 
				setPageComplete(false);
				return;
			}
			final String location= fLocationGroup.getLocation().toOSString();
			
			if (location.length() == 0) {
				setErrorMessage(null);
				setMessage(NewWizardMessages.JavaProjectWizardFirstPage_Message_enterLocation); 
				setPageComplete(false);
				return;
			}