Java method for judging whether an object is empty of includes null ''

In this paper, we share the specific code of Java to judge whether the object is empty for your reference. The specific contents are as follows

package com.gj5u.publics.util;
 
import java.util.List;
 
/**
 *  Judge whether the object is empty or not 
 * 
 * @author Rex
 *
 */
public class EmptyUtil
{
  /**
   *  Judge that the object is empty 
   * 
   * @param obj
   *       Object name 
   * @return  Whether it is empty or not 
   */
  @SuppressWarnings("rawtypes")
  public static boolean isEmpty(Object obj)
  {
    if (obj == null)
    {
      return true;
    }
    if ((obj instanceof List))
    {
      return ((List) obj).size() == 0;
    }
    if ((obj instanceof String))
    {
      return ((String) obj).trim().equals("");
    }
    return false;
  }
  
  /**
   *  Judge that the object is not empty 
   * 
   * @param obj
   *       Object name 
   * @return  Whether it is not empty 
   */
  public static boolean isNotEmpty(Object obj)
  {
    return !isEmpty(obj);
  }
}