find Field - Java Reflection

Java examples for Reflection:Field

  1. HOME
  2. Java
  3. Reflection
  4. Field

Description

find Field

Demo Code

/**/*from  www. j  ava 2s  . c o  m*/
 * Copyright 2008-2009 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. 
 */
//package com.java2s;

import java.lang.reflect.Field;

public class Main {


    public static Field findField(Object obj, String beanPath) {
        try {
            if (beanPath.indexOf('.') > -1) {
                String name = beanPath.substring(0, beanPath.indexOf('.'));
                String path = beanPath.substring(beanPath.indexOf('.') + 1);
                Field field = obj.getClass().getDeclaredField(name);
                field.setAccessible(true);
                return findField(field.get(obj), path);
            } else if (obj == null) {
                return null;
            } else {
                return obj.getClass().getDeclaredField(beanPath);
            }
        } catch (NoSuchFieldException e) {
            return null;
        } catch (IllegalAccessException e) {
            throw new RuntimeException(e);
        }
    }
}

Related Tutorials