public void actionPerformed( java.awt.event.ActionEvent e ) {
String numberedPinYin = numberedPinYinField.getText();
FormatPinYin fpy = new FormatPinYin();
toneMarkedPinYin = FormatPinYin.addToneMarks( numberedPinYin );
System.out.println( "In: " + numberedPinYin );
System.out.println( "Out: " );