Bug 20181 TVT2: Mnemonic doesn't work in Java Editor prefs
Japanese TVT tester found a non-functional mnemonic in Preferences>Java>Editor on the Syntax tab. Pressing Alt+B doesn't activate the bold checkbox. Build F2 NL fragments generated on 6/11 Window>Preferences Select Java Select Editor Click on Syntax tab press Alt+B... checkbox does not work.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/JavaEditorPreferencePage.java
private ColorEditor fSyntaxForegroundColorEditor;
	private ColorEditor fAppearanceForegroundColorEditor;
	private ColorEditor fBackgroundColorEditor;
	private Button fBackgroundDefaultRadioButton;
	private Button fBackgroundCustomRadioButton;
	private Button fBackgroundColorButton;
	private Button fBoldCheckBox;
	private SourceViewer fPreviewViewer;
	private Color fBackgroundColor;
    private Control fAutoInsertDelayText;
    private Control fAutoInsertJavaTriggerText;
    private Control fAutoInsertJavaDocTriggerText;
	
	public JavaEditorPreferencePage() {
		setDescription(JavaUIMessages.getString("JavaEditorPreferencePage.description")); 
		setPreferenceStore(JavaPlugin.getDefault().getPreferenceStore());
		fOverlayStore= new OverlayPreferenceStore(getPreferenceStore(), fKeys);
	}
	
	public static void initDefaults(IPreferenceStore store) {
		
		/* 
		 * Ensure that the display is accessed only in the UI thread.
		 * Ensure that there are no side effects of switching the thread.
		 */
		final RGB[] rgbs= new RGB[3];
		final Display display= Display.getDefault();
		display.syncExec(new Runnable() {
			public void run() {
				Color c= display.getSystemColor(SWT.COLOR_GRAY);