iterate java object ket and value

import java.lang.reflect.Field;

import java.lang.reflect.Modifier;

import java.util.HashMap;

import java.util.   ;

public class Main {

  private Main() {}

  public static Map<String, Object> getFieldNamesAndValues(final Object obj, boolean publicOnly)

    throws IllegalArgumentException,IllegalAccessException

  {

    Class<? extends Object> c1 = obj.getClass();

    Map<String, Object> map = new HashMap<String, Object>();

    Field[] fields = c1.getDeclaredFields();

    for (int i = 0; i < fields.length; i++) {

      String name = fields[i].getName();

      if (publicOnly) {

        if(Modifier.isPublic(fields[i].getModifiers())) {

          Object value = fields[i].get(obj);

          map.put(name, value);

        }

      }

      else {

        fields[i].setAccessible(true);

        Object value = fields[i].get(obj);

        map.put(name, value);

      }

    }

    return map;

  }

  /**

   * @param args

   */

  public static void main(String[] args) throws Exception {

    Dummy dummy = new Dummy();

    System.out.println(Main.getFieldNamesAndValues(dummy,true));

    System.out.println(Main.getFieldNamesAndValues(dummy,false));

    /*

     * output :

     *  {value3=43, value1=foo, value2=42}

     *  {value3=43, value4=bar, value1=foo, value2=42}

     */

  }

}

class Dummy {

  public String value1 = "foo";

  public int value2 = 42;

  public Integer value3 = new Integer(43);

  private String value4 = "bar";

}