Java Reflection Field Value Set setFieldValue(final Object obj, final String fieldName, final Object value)

Description

set Field Value

License

Apache License

Declaration

public static void setFieldValue(final Object obj, final String fieldName, final Object value) 

Method Source Code

//package com.java2s;
/*//w  w w .  j  a  va2s.  c  o  m
 * 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
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.lang.reflect.Field;

public class Main {
    public static void setFieldValue(final Object obj, final String fieldName, final Object value) {
        getSetField(obj, fieldName, false, value);
    }

    private static Object getSetField(final Object obj, final String fieldName, final boolean isGet,
            final Object value) {
        Class<?> clazz = obj.getClass();
        while (clazz != null) {
            try {
                final Field field = clazz.getDeclaredField(fieldName);
                field.setAccessible(true);

                if (isGet) {
                    return field.get(obj);
                } else {
                    field.set(obj, value);
                    return null;
                }
            } catch (final Exception ignore) {
                // ignore
            }
            clazz = clazz.getSuperclass();
        }
        throw new RuntimeException("Field " + fieldName + " not found on object " + obj);
    }
}

Related

1. setFieldValue(final Class clazz, final String fieldName, final Object fieldValue)
2. setFieldValue(final Field field, final Object instance, final Object value)
3. setFieldValue(final Field field, final Object obj, final Object value)
4. setFieldValue(final Field field, final Object value, final Object object)
5. setFieldValue(final Object bean, final Field field, final Object value)
6. setFieldValue(final Object object, final String field, final Object value)
7. setFieldValue(final Object object, final String fieldName, final Object value)
8. setFieldValue(final Object object, final String fieldName, final Object value)
9. setFieldValue(final Object object, final String fieldName, final Object value)