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Java example source code file (Serialize.java)

This example Java source code file (Serialize.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

atr, bytearrayoutputstream, commandapdu, exception, ins, invalid, ioexception, objectinputstream, objectoutputstream, responseapdu, runtimeexception, stringreader

The Serialize.java Java example source code

/*
 * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/**
 * @test
 * @bug 6445367
 * @summary make sure serialization works
 * @author Andreas Sterbenz
 */

import java.io.*;

import javax.smartcardio.*;

public class Serialize {

    public static void main(String[] args) throws Exception {
        ByteArrayOutputStream bout = new ByteArrayOutputStream();
        ObjectOutputStream oout = new ObjectOutputStream(bout);

        CommandAPDU c1 = new CommandAPDU(parse("00 A4 04 00 07 A0 00 00 00 62 81 01 00"));
        ResponseAPDU r1 = new ResponseAPDU(parse("07 A0 00 00 00 62 81 01 04 01 00 00 24 05 00 0B 04 B0 25 90 00"));
        ATR a1 = new ATR(parse("3B 7F 18 00 00 00 31 C0 73 9E 01 0B 64 52 D9 04 00 82 90 00"));

        oout.writeObject(c1);
        oout.writeObject(r1);
        oout.writeObject(a1);
        oout.close();

        ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
        ObjectInputStream oin = new ObjectInputStream(bin);

        CommandAPDU c2 = (CommandAPDU)oin.readObject();
        ResponseAPDU r2 = (ResponseAPDU)oin.readObject();
        ATR a2 = (ATR)oin.readObject();

        if (!c2.equals(c1)) {
            throw new Exception("CommandAPDU not equal");
        }
        if (c2.getNc() != 7) {
            throw new Exception("Nc mismatch: " + c2.getNc());
        }
        if (c2.getNe() != 256) {
            throw new Exception("Ne mismatch: " + c2.getNe());
        }
        if (c2.getINS() != 0xA4) {
            throw new Exception("INS mismatch: " + c2.getINS());
        }
        if (!r2.equals(r1)) {
            throw new Exception("ResponseAPDU not equal");
        }
        if (r2.getSW1() != 0x90) {
            throw new Exception("SW1 mismatch: " + r2.getSW1());
        }
        if (!a2.equals(a1)) {
            throw new Exception("ATR not equal");
        }
        if (!java.util.Arrays.equals(a2.getHistoricalBytes(), a1.getHistoricalBytes())) {
            throw new Exception("Historical bytes mismatch");
        }
        System.out.println("OK");
    }

    private final static char[] hexDigits = "0123456789abcdef".toCharArray();

    public static String toString(byte[] b) {
        StringBuffer sb = new StringBuffer(b.length * 3);
        for (int i = 0; i < b.length; i++) {
            int k = b[i] & 0xff;
            if (i != 0) {
                sb.append(':');
            }
            sb.append(hexDigits[k >>> 4]);
            sb.append(hexDigits[k & 0xf]);
        }
        return sb.toString();
    }

    public static byte[] parse(String s) {
        try {
            int n = s.length();
            ByteArrayOutputStream out = new ByteArrayOutputStream(n >> 1);
            StringReader r = new StringReader(s);
            while (true) {
                int b1 = nextNibble(r);
                if (b1 < 0) {
                    break;
                }
                int b2 = nextNibble(r);
                if (b2 < 0) {
                    throw new RuntimeException("Invalid string " + s);
                }
                int b = (b1 << 4) | b2;
                out.write(b);
            }
            return out.toByteArray();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    private static int nextNibble(StringReader r) throws IOException {
        while (true) {
            int ch = r.read();
            if (ch == -1) {
                return -1;
            } else if ((ch >= '0') && (ch <= '9')) {
                return ch - '0';
            } else if ((ch >= 'a') && (ch <= 'f')) {
                return ch - 'a' + 10;
            } else if ((ch >= 'A') && (ch <= 'F')) {
                return ch - 'A' + 10;
            }
        }
    }

}

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