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Commons Beanutils example source code file (

This example Commons Beanutils source code file ( is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Commons Beanutils tags/keywords

abstractconverter, abstractconverter, class, class, object, object, stringconverter, stringconverter, throwable

The Commons Beanutils source code

 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package org.apache.commons.beanutils.converters;

 * {@link org.apache.commons.beanutils.Converter}
 * implementation that converts an incoming
 * object into a <code>java.lang.String object.
 * <p>
 * Note that ConvertUtils really is designed to do string->object conversions,
 * and offers very little support for object->string conversions. The
 * ConvertUtils/ConvertUtilsBean methods only select a converter to apply
 * based upon the target type being converted to, and generally assume that
 * the input is a string (by calling its toString method if needed).
 * <p>
 * This class is therefore just a dummy converter that converts its input
 * into a string by calling the input object's toString method and returning
 * that value.
 * <p>
 * It is possible to replace this converter with something that has a big
 * if/else statement that selects behaviour based on the real type of the
 * object being converted (or possibly has a map of converters, and looks
 * them up based on the class of the input object). However this is not part
 * of the existing ConvertUtils framework.
 * @author Craig R. McClanahan
 * @version $Revision: 690380 $ $Date: 2008-08-29 21:04:38 +0100 (Fri, 29 Aug 2008) $
 * @since 1.3
public final class StringConverter extends AbstractConverter {

     * Construct a <b>java.lang.String Converter that throws
     * a <code>ConversionException if an error occurs.
    public StringConverter() {

     * Construct a <b>java.lang.String Converter that returns
     * a default value if an error occurs.
     * @param defaultValue The default value to be returned
     * if the value to be converted is missing or an error
     * occurs converting the value.
    public StringConverter(Object defaultValue) {

     * Return the default type this <code>Converter handles.
     * @return The default type this <code>Converter handles.
     * @since 1.8.0
    protected Class getDefaultType() {
        return String.class;

     * Convert the specified input object into an output object of the
     * specified type.
     * @param type Data type to which this value should be converted.
     * @param value The input value to be converted.
     * @return The converted value.
     * @throws Throwable if an error occurs converting to the specified type
     * @since 1.8.0
    protected Object convertToType(Class type, Object value) throws Throwable {
        return value.toString();


Other Commons Beanutils examples (source code examples)

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