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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, classconverter, classconverter, classloader, classnotfoundexception, object, object, string, 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} implementaion that handles conversion
 * to and from <b>java.lang.Class objects.
 * <p>
 * The class will be loaded from the thread context class
 * loader (if it exists); otherwise the class loader that loaded this class
 * will be used.
 * <p>
 * Can be configured to either return a <i>default value or throw a
 * <code>ConversionException if a conversion error occurs.
 * @author Tomas Viberg
 * @version $Revision: 690380 $ $Date: 2008-08-29 21:04:38 +0100 (Fri, 29 Aug 2008) $
 * @since 1.4
public final class ClassConverter extends AbstractConverter {

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

     * Construct a <b>java.lang.Class 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 ClassConverter(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 Class.class;

     * <p>Convert a java.lang.Class or object into a String.

* * @param value The input value to be converted * @return the converted String value. * @since 1.8.0 */ protected String convertToString(Object value) { return (value instanceof Class) ? ((Class)value).getName() : value.toString(); } /** * <p>Convert the input object into a java.lang.Class.

* * @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 { ClassLoader classLoader = Thread.currentThread().getContextClassLoader(); if (classLoader != null) { try { return (classLoader.loadClass(value.toString())); } catch (ClassNotFoundException ex) { // Don't fail, carry on and try this class's class loader // (see issue# BEANUTILS-263) } } // Try this class's class loader classLoader = ClassConverter.class.getClassLoader(); return (classLoader.loadClass(value.toString())); } }

Other Commons Beanutils examples (source code examples)

Here is a short list of links related to this Commons Beanutils source code file:

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