Returns the BigInteger as a hex encoded string. - Java java.math

Java examples for java.math:BigInteger

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Description

Returns the BigInteger as a hex encoded string.

Demo Code

/*/*from   w  w  w  .java  2s  .  c o  m*/
 * Copyright (c) 2008-2011, Martijn Brinkers, Djigzo.
 * 
 * This file is part of Djigzo email encryption.
 *
 * Djigzo is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License 
 * version 3, 19 November 2007 as published by the Free Software 
 * Foundation.
 *
 * Djigzo 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public 
 * License along with Djigzo. If not, see <http://www.gnu.org/licenses/>
 *
 * Additional permission under GNU AGPL version 3 section 7
 * 
 * If you modify this Program, or any covered work, by linking or 
 * combining it with aspectjrt.jar, aspectjweaver.jar, tyrex-1.0.3.jar, 
 * freemarker.jar, dom4j.jar, mx4j-jmx.jar, mx4j-tools.jar, 
 * spice-classman-1.0.jar, spice-loggerstore-0.5.jar, spice-salt-0.8.jar, 
 * spice-xmlpolicy-1.0.jar, saaj-api-1.3.jar, saaj-impl-1.3.jar, 
 * wsdl4j-1.6.1.jar (or modified versions of these libraries), 
 * containing parts covered by the terms of Eclipse Public License, 
 * tyrex license, freemarker license, dom4j license, mx4j license,
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 */
//package com.java2s;
import java.math.BigInteger;

public class Main {
    public static void main(String[] argv) throws Exception {
        BigInteger bigInteger = new BigInteger("1234");
        System.out.println(hexEncode(bigInteger));
    }

    /**
     * Returns the BigInteger as a hex encoded string. If the input BigInteger is null the defaultIfNull
     * value will be returned.
     */
    public static String hexEncode(BigInteger bigInteger,
            String defaultIfNull) {
        if (bigInteger == null) {
            return defaultIfNull;
        }

        return bigInteger.toString(16).toUpperCase();
    }

    /**
     * Returns the BigInteger as a hex encoded string. If the input BigInteger is null, null will be returned.
     */
    public static String hexEncode(BigInteger bigInteger) {
        return hexEncode(bigInteger, null);
    }
}

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