Java tutorial
//package com.java2s; /** * Copyright 2015 Handhandlab.com * * This file is part of AgentDroid. * * AgentDroid 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. * * AgentDroid 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 AgentDroid. If not, see <http://www.gnu.org/licenses/>. * */ import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.security.cert.CertificateException; import java.security.cert.CertificateFactory; import java.security.cert.X509Certificate; public class Main { /** * * @param f * @throws Exception */ private static X509Certificate readCertificate(File f) throws CertificateException, IOException { CertificateFactory cf = CertificateFactory.getInstance("X.509"); // Use BufferedInputStream (which supports mark and reset) so that each // generateCertificate call consumes one certificate. BufferedInputStream in = new BufferedInputStream(new FileInputStream(f)); X509Certificate cert = (X509Certificate) cf.generateCertificate(in); in.close(); return cert; } }