Bug 103026 When detected a 1.5 JDK on a fresh workspace as a default the default compiler complaince should be switch to 5.0
3.1 Compiling with compiler complaince 1.4 against a 5.0 VM can cause some trouble with covariant return types. Therefore when detecting the default VM for a fresh workspace the launching plug-in should switch the default compiler compliance to 5.0 when a 1.5 VM is detected.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/JavaProjectWizardFirstPage.java
final File path = new File(directoryName);
				if (path.exists())
					dialog.setFilterPath(directoryName);
			}
			final String selectedDirectory = dialog.open();
			if (selectedDirectory != null) {
				fLocation.setText(selectedDirectory);
				JavaPlugin.getDefault().getDialogSettings().put(DIALOGSTORE_LAST_EXTERNAL_LOC, selectedDirectory);
			}
		}
		/* (non-Javadoc)
		 * @see org.eclipse.jdt.internal.ui.wizards.dialogfields.IDialogFieldListener#dialogFieldChanged(org.eclipse.jdt.internal.ui.wizards.dialogfields.DialogField)
		 */
		public void dialogFieldChanged(DialogField field) {
			if (field == fWorkspaceRadio) {
				final boolean checked= fWorkspaceRadio.isSelected();
				if (checked) {
					fPreviousExternalLocation= fLocation.getText();
					fLocation.setText(getDefaultPath(fNameGroup.getName()));
				} else {
					fLocation.setText(fPreviousExternalLocation);
				}
			}
			fireEvent();
		}
	}
	/**
	 * Request a project layout.
	 */
	private final class LayoutGroup implements Observer, SelectionListener {