Java Reflection Field Set setField(Object object, String fieldName, Object value)

Description

set Field

License

Apache License

Declaration

public static void setField(Object object, String fieldName, Object value) 

Method Source Code

//package com.java2s;
/*//from   w ww. j  a va 2s.  com
 * Copyright 2013-2017 Simba Open Source
 *
 * 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(Object object, String fieldName, Object value) {
        try {
            getField(object.getClass(), fieldName).set(object, value);
        } catch (Exception unexpectedReflectionException) {
            throw new RuntimeException("unexpected exception ", unexpectedReflectionException);
        }
    }

    public static void setField(Object object, String fieldName, int value) {
        try {
            getField(object.getClass(), fieldName).setInt(object, value);
        } catch (Exception unexpectedReflectionException) {
            throw new RuntimeException("unexpected exception ", unexpectedReflectionException);
        }
    }

    public static void setField(Object object, String fieldName, long value) {
        try {
            getField(object.getClass(), fieldName).setLong(object, value);
        } catch (Exception unexpectedReflectionException) {
            throw new RuntimeException("unexpected exception ", unexpectedReflectionException);
        }
    }

    public static Field getField(Class<?> clazz, String fieldName) {
        try {
            if (clazz != null) {
                Field field = clazz.getDeclaredField(fieldName);
                field.setAccessible(true);
                return field;
            }
        } catch (NoSuchFieldException ex) {
            return getField(clazz.getSuperclass(), fieldName);
        }
        throw new RuntimeException("No such field " + fieldName);
    }
}

Related

1. setField(Object object, String field, Object value)
2. setField(Object object, String fieldName, int value)
3. setField(Object object, String fieldName, Object newValue)
4. setField(Object object, String fieldName, Object newValue, boolean isFindDeclaredField, boolean isUpwardFind)
5. setField(Object object, String fieldName, Object value)
6. setField(Object object, String fieldName, Object value)
7. setField(Object object, String fieldName, Object value)
8. setField(Object object, String name, boolean value)
9. setField(Object object, String name, Object value)