Java tutorial
//package com.java2s; import java.util.regex.Pattern; public class Main { public static boolean heightCheck(String heightStr) { if (heightStr == null || (heightStr.trim().equals(""))) { return false; } Pattern pattern = Pattern.compile("^[0-9]*$"); if (pattern.matcher(heightStr).matches()) { int hei = Integer.valueOf(heightStr); if ((hei > 140) && (hei < 200)) { return true; } else { return false; } } else { return false; } } }