Get all fields of a class. : Field « Reflection « Java

Get all fields of a class.

//package org.nestframework.utils;

import java.beans.BeanInfo;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;

 * Nest utility class.
 * @author audin
public class NestUtil {

   * Get all fields of a class.
   * @param clazz The class.
   * @return All fields of a class.
  public static Collection<Field> getFields(Class<?> clazz) {
//    if (log.isDebugEnabled()) {
  //    log.debug("getFields(Class<?>) - start");

    Map<String, Field> fields = new HashMap<String, Field>();
    while (clazz != null) {
      for (Field field : clazz.getDeclaredFields()) {
        if (!fields.containsKey(field.getName())) {
          fields.put(field.getName(), field);

      clazz = clazz.getSuperclass();

    Collection<Field> returnCollection = fields.values();
  //  if (log.isDebugEnabled()) {
    //  log.debug("getFields(Class<?>) - end");
  //  }
    return returnCollection;



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