java 非空判断类

package com.niu.util;import java.util.Collection;import java.util.Map;public class EmptyUtil {    //判断非空    public static boolean isEmpty(Object obj) {        //判断是否为null        if (obj == null) {            return true;        }        //判断字符是否为空        if (obj instanceof CharSequence) {            if (((CharSequence) obj).length() == 0) {                return true;            }        }        //map判断        if (obj instanceof Map) {            return ((Map) obj).isEmpty();        }        //collection判断        if (obj instanceof Collection) {            return ((Collection) obj).isEmpty();        }        //数组判断        if (obj instanceof Object[]) {            Object[] object = (Object[]) obj;            if (object.length == 0) {                return true;            }            boolean empty = true;            for (int i = 0; i < object.length; i++) {                if (object[i] != null) {                    empty = false;                    break;                }            }            return empty;        }        return false;    }    //多值的判断    public static boolean isEmptys(Object... obj) {        for (int i = 0; i < obj.length; i++) {            if (EmptyUtil.isEmpty(obj[i])) {                return true;            }        }        return false;    }}