Java Reflection Field Set setField(String name, Object target, Object value)

Description

set Field

License

Apache License

Declaration

public static void setField(String name, Object target, Object value) throws Exception 

Method Source Code

//package com.java2s;
/*/*w ww. ja  v a  2s. c o  m*/
 * Copyright 2013 the original author or authors.
 *
 * Licensed 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 setField(String name, Object target, Object value) throws Exception {
        Field field = null;
        Class<?> clazz = target.getClass();
        do {
            try {
                field = clazz.getDeclaredField(name);
            } catch (Exception ex) {
            }

            clazz = clazz.getSuperclass();
        } while (field == null && !clazz.equals(Object.class));

        if (field == null)
            throw new IllegalArgumentException(
                    "Cannot find field '" + name + "' in the class hierarchy of " + target.getClass());
        field.setAccessible(true);
        field.set(target, value);
    }
}

Related

1. setField(String field, Object object, Object value)
2. setField(String field, Object value)
3. setField(String fieldName, Object instance, Class instanceClass, Object value)
4. setField(String fieldName, Object instance, Object value)
5. setField(String name, Object target, Object value)
6. setField(T object, Field field, ResourceBundle bundle)
7. setFieldAccessible(Class clazz, String... names)
8. setFieldAccessible(Field field)
9. setFieldBySomeMethod(List setMethods, Object object, Object value)