Here you can find the source of isNotEmpty(String value)
public static boolean isNotEmpty(String value)
//package com.java2s; public class Main { public static boolean isNotEmpty(String value) { return (!isEmpty(value)); }/*from w ww. j a v a 2 s. c o m*/ public static boolean isEmpty(String value) { return (value == null || value.trim().length() == 0); } }