Java Reflection Field Set setField(Class klazz, Object recipient, String fieldName, Object newValue)

Description

set Field

License

Open Source License

Declaration

public static void setField(Class<? extends Object> klazz, Object recipient, String fieldName,
            Object newValue) 

Method Source Code

//package com.java2s;
/* //from   w  ww  .  jav  a  2 s.  c  om
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.lang.reflect.Field;

public class Main {
    public static void setField(Object recipient, String fieldName, Object newValue) {
        setField(recipient.getClass(), recipient, fieldName, newValue);
    }

    public static void setField(Class<? extends Object> klazz, Object recipient, String fieldName,
            Object newValue) {
        Field[] fields = klazz.getDeclaredFields();
        for (int i = 0; i < fields.length; i++) {
            if (fields[i].getName().equals(fieldName)) {
                fields[i].setAccessible(true);

                try {
                    fields[i].set(recipient, newValue);
                } catch (IllegalArgumentException e) {
                    throw new RuntimeException("Couldn't set field.", e);
                } catch (IllegalAccessException e) {
                    throw new RuntimeException("Couldn't set field.", e);
                }
            }
        }
    }
}

Related

1. setField(Class clazz, Object instance, String fieldName, Object value)
2. setField(Class clazz, Object src, String fieldName, Object value)
3. setField(Class clazz, String name, Object value)
4. setField(Class cls, Object obj, String fieldName, Object value)
5. setField(Class type, String name, Object instance, Object value)
6. setField(Class clazz, String fieldName, T instance, Object value)
7. setField(Class c, Object inst, String name, Object value)
8. setField(Class cl, String name, Object obj, Object value)
9. setField(Class clazz, Object instance, String field, Object value)