Java Reflection Field Find findField(Object target, String fieldName)

Description

Finds a field with the given name.

License

Apache License

Parameter

Parameter	Description
target	a parameter
fieldName	a parameter

Exception

Parameter	Description
NoSuchFieldException	an exception

Declaration

private static Field findField(Object target, String fieldName) throws NoSuchFieldException 

Method Source Code

//package com.java2s;
/*//  www . j a va 2s.c  o m
 * Copyright 2017 JBoss Inc
 *
 * 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 {
    /**
     * Finds a field with the given name.
     * @param target
     * @param fieldName
     * @throws NoSuchFieldException
     */
    private static Field findField(Object target, String fieldName) throws NoSuchFieldException {
        Class<?> targetClass = target.getClass();
        while (targetClass != Object.class) {
            try {
                Field field = targetClass.getDeclaredField(fieldName);
                return field;
            } catch (NoSuchFieldException e) {
                targetClass = targetClass.getSuperclass();
            }
        }
        throw new NoSuchFieldException();
    }
}

Related

1. findField(Object obj, String name)
2. findField(Object object, String fieldName)
3. findField(Object object, String name, Class klass)
4. findField(Object propertyId, Class classOfItem)
5. findField(Object target, Class type)
6. findField(String fieldName, ArrayList fields)
7. findField(String fieldName, Class cl)
8. findField(String fieldName, Class type)
9. findField(String name, Class c)