Java tutorial
//package com.java2s; /* * Graph89 - Emulator for Android * * Copyright (C) 2012-2013 Dritan Hashorva * * This program 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. * * This program 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 this program. If not, see <http://www.gnu.org/licenses/> */ import java.math.BigInteger; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.util.Locale; public class Main { public static String getMD5(String value) { if (value == null || value.length() == 0) return null; MessageDigest m = null; try { m = MessageDigest.getInstance("MD5"); } catch (NoSuchAlgorithmException e) { return null; } m.update(value.getBytes(), 0, value.length()); return new BigInteger(1, m.digest()).toString(16).toUpperCase(Locale.getDefault()); } }