Java Reflection Field Find findField(Class clazz, String fieldName)

Description

find Field

License

Apache License

Declaration

public static Field findField(Class<?> clazz, String fieldName) 

Method Source Code

//package com.java2s;
/*/*from  ww w . ja v a 2 s  .co  m*/
 *  Copyright 2012 Christopher Pheby
 *
 *  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 Field findField(Class<?> clazz, String fieldName) {

        Class<?> typeBeingSearched = clazz;
        while (typeBeingSearched != null && !typeBeingSearched.equals(Object.class)) {

            Field[] fields = typeBeingSearched.getDeclaredFields();

            for (Field field : fields) {
                if (fieldName.equals(field.getName())) {
                    return field;
                }
            }

            typeBeingSearched = typeBeingSearched.getSuperclass();
        }
        throw new IllegalStateException("Field (" + fieldName + ") could not be found in " + clazz.getName());
    }
}

Related

1. findField(Class classToCheck, String propertyName)
2. findField(Class claz, String... names)
3. findField(Class clazz, final String field)
4. findField(Class clazz, String field)
5. findField(Class clazz, String field, Class type, int index)
6. findField(Class clazz, String fieldName)
7. findField(Class clazz, String fieldName)
8. findField(Class clazz, String fieldName)
9. findField(Class clazz, String fieldName)