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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 import java.io.ByteArrayInputStream;
     18 import java.io.ByteArrayOutputStream;
     19 import java.io.IOException;
     20 import java.io.ObjectInputStream;
     21 import java.io.ObjectOutputStream;
     22 import java.io.Serializable;
     23 
     24 /**
     25  * Exercise serialization.
     26  */
     27 public class Main {
     28 
     29     public static void main(String[] args) {
     30         testObjectSerialization();
     31     }
     32 
     33     static void testObjectSerialization() {
     34         byte[] serialData;
     35 
     36         try {
     37             serialData = createStream();
     38             checkStream(serialData);
     39         } catch (IOException ioe) {
     40             throw new RuntimeException(ioe);
     41         }
     42     }
     43 
     44     static byte[] createStream() throws IOException {
     45         ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
     46         ObjectOutputStream objStream = new ObjectOutputStream(byteStream);
     47 
     48         Sub sub = new Sub('X');
     49         objStream.writeObject(sub);
     50         byte[] bytes = byteStream.toByteArray();
     51 
     52         objStream.close();
     53         byteStream.close();
     54         return bytes;
     55     }
     56 
     57     static void checkStream(byte[] input) throws IOException {
     58         ByteArrayInputStream byteStream = new ByteArrayInputStream(input);
     59         ObjectInputStream objStream = new ObjectInputStream(byteStream);
     60 
     61         Sub sub;
     62         try {
     63             sub = (Sub) objStream.readObject();
     64         } catch (ClassNotFoundException cnfe) {
     65             throw new RuntimeException(cnfe);
     66         }
     67 
     68         objStream.close();
     69         byteStream.close();
     70 
     71         sub.check();
     72     }
     73 }
     74 
     75 class Base implements Serializable {
     76     private static final long serialVersionUID = 12345;
     77 
     78     Boolean one;
     79     Integer two;
     80     String three;
     81 
     82     public Base() {
     83         one = true;
     84         two = Integer.valueOf(2);
     85         three = "three";
     86     }
     87 }
     88 
     89 class Sub extends Base {
     90     private static final long serialVersionUID = 54321;
     91 
     92     Double four;
     93     Float five;
     94     private Byte six = 26;
     95     Character seven = '7';
     96     Short eight;
     97     long nine;
     98     public Character thing;
     99 
    100     public Sub(char thing) {
    101         four = 4.0;
    102         five = 5.0f;
    103         six = 6;
    104         eight = 8;
    105         nine = 9;
    106         this.thing = thing;
    107     }
    108 
    109     public void check() {
    110         System.out.println("one=" + one + " two=" + two + " three=" + three
    111             + " four=" + four + " five=" + five + " six=" + six
    112             + " seven=" + seven + " eight=" + eight + " nine=" + nine
    113             + " thing=" + thing);
    114     }
    115 }
    116 
    117