Valida

import java.text.ParseException;
import javax.swing.text.MaskFormatter;
 
 public enum Mascara{
     CGC("##.###.###/####-##"),
     CPF("###.###.###-##"), 
     TEL("(##)####-####"), 
     CEP("##.###-###"),
     DATA("##/##/####");
 
     private String mask;
     private javax.swing.text.MaskFormatter formatter;
     
     private Mascara(String mask) {
         this.mask = mask;
     }
     
     public MaskFormatter getMascara() throws ParseException {
         return new MaskFormatter(mask);
     }
}

public MaskFormatter getMascaraData() throws ParseException {
     	     formatter = new MaskFormatter(mask);
             formatter.setValueContainsLiteralCharacters(true);
             formatter.setPlaceholderCharacter('_');
         return formatter;
     }