Here you can find the source of toLong(String s)
public static long toLong(String s)
//package com.java2s; public class Main { public static long toLong(String s) { try {//ww w . java2s.c om if ((s != null) && (!("".equals(s.trim())))) return Long.parseLong(s); } catch (Exception exception) { } return 0L; } public static boolean equals(String s1, String s2) { if ((isEmpty(s1)) && (isEmpty(s2))) return true; if ((!(isEmpty(s1))) && (!(isEmpty(s2)))) return s1.equals(s2); return false; } public static boolean isEmpty(String s) { return ((s == null) || ("".equals(s))); } public static String isEmpty(String s, String result) { if ((s != null) && (!(s.equals("")))) return s; return result; } }