Java tutorial
//package com.java2s; public class Main { public static boolean areNotEmpty(String... values) { boolean result = true; if (values == null || values.length == 0) { result = false; } else { for (String value : values) { result &= !isBlank(value); } } return result; } public static boolean isBlank(String str) { int strLen; if ((str == null) || ((strLen = str.length()) == 0)) { return true; } for (int i = 0; i < strLen; i++) { if ((Character.isWhitespace(str.charAt(i)) == false)) { return false; } } return true; } }