1. /*
  2. * Copyright 2001-2004 The Apache Software Foundation.
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License");
  5. * you may not use this file except in compliance with the License.
  6. * You may obtain a copy of the License at
  7. *
  8. * http://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS,
  12. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. * See the License for the specific language governing permissions and
  14. * limitations under the License.
  15. */
  16. package org.apache.commons.beanutils.converters;
  17. import org.apache.commons.beanutils.ConversionException;
  18. import org.apache.commons.beanutils.Converter;
  19. /**
  20. * <p>Standard {@link Converter} implementation that converts an incoming
  21. * String into a <code>java.lang.String</code> object, optionally using a
  22. * default value or throwing a {@link ConversionException} if a conversion
  23. * error occurs.</p>
  24. *
  25. * @author Craig R. McClanahan
  26. * @version $Revision: 1.5 $ $Date: 2004/02/28 13:18:34 $
  27. * @since 1.3
  28. */
  29. public final class StringConverter implements Converter {
  30. // --------------------------------------------------------- Public Methods
  31. /**
  32. * Convert the specified input object into an output object of the
  33. * specified type.
  34. *
  35. * @param type Data type to which this value should be converted
  36. * @param value The input value to be converted
  37. *
  38. * @exception ConversionException if conversion cannot be performed
  39. * successfully
  40. */
  41. public Object convert(Class type, Object value) {
  42. if (value == null) {
  43. return ((String) null);
  44. } else {
  45. return (value.toString());
  46. }
  47. }
  48. }