Java tutorial
//package com.java2s; /* NFCard is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. NFCard is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Wget. If not, see <http://www.gnu.org/licenses/>. Additional permission under GNU GPL version 3 section 7 */ public class Main { public static int parseInt(String txt, int radix, int def) { int ret; try { ret = Integer.valueOf(txt, radix); } catch (Exception e) { ret = def; } return ret; } }