Example usage for java.io ObjectInputStream ObjectInputStream

Introduction

In this page you can find the example usage for java.io ObjectInputStream ObjectInputStream.

Prototype

public ObjectInputStream(InputStream in) throws IOException

Source Link

Document

Creates an ObjectInputStream that reads from the specified InputStream.

Usage

From source file:Main.java

public static Object readSeriObject(Context context, String fileName) throws Exception {
    String path = context.getFilesDir() + "/";

    File dir = new File(path);
    dir.mkdirs();/*w  ww. j av a  2 s . c  o  m*/
    File file = new File(dir, fileName);
    InputStream is = new FileInputStream(file);

    ObjectInputStream objectInputStream = new ObjectInputStream(is);

    Object o = objectInputStream.readObject();

    return o;

}

From source file:Main.java

/**
 * Convert bytes array to object./*from  w  ww  . jav a2 s  . com*/
 *
 * @param bytes object bytes
 * @param <T> object class
 * @return object
 */
public static <T> T fromBytes(byte[] bytes) {
    Object result = null;
    ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
    ObjectInput in = null;
    try {
        in = new ObjectInputStream(bis);
        result = in.readObject();
    } catch (IOException | ClassNotFoundException e) {
        throw new RuntimeException(e);
    } finally {
        if (in != null) {
            try {
                in.close();
            } catch (Exception e) {
            }
        }
        if (bis != null) {
            try {
                bis.close();
            } catch (Exception e) {
            }
        }
    }
    return (T) result;
}

From source file:Main.java

public static List copyBySerialize(List src) throws IOException, ClassNotFoundException {
    ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
    ObjectOutputStream out = new ObjectOutputStream(byteOut);
    out.writeObject(src);//from   www.j a v  a2  s.  c o  m

    ByteArrayInputStream byteIn = new ByteArrayInputStream(byteOut.toByteArray());
    ObjectInputStream in = new ObjectInputStream(byteIn);
    List dest = (List) in.readObject();
    return dest;
}

From source file:MainClass.java

public static void desEncrypt(String f1, String f2) throws Exception {
    SecretKey key = null;//from  w w  w . j av a  2 s.c  o  m
    ObjectInputStream keyFile = new ObjectInputStream(new FileInputStream("DESKey.ser"));
    key = (SecretKey) keyFile.readObject();
    keyFile.close();

    KeyGenerator keygen = KeyGenerator.getInstance("DES");
    key = keygen.generateKey();
    ObjectOutputStream keyFileout = new ObjectOutputStream(new FileOutputStream("DESKey.ser"));
    keyFileout.writeObject(key);
    keyFileout.close();
    Cipher cipher = null;
    cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
    cipher.init(Cipher.ENCRYPT_MODE, key);
    BufferedInputStream in = new BufferedInputStream(new FileInputStream(f1));

    CipherOutputStream out = new CipherOutputStream(new BufferedOutputStream(new FileOutputStream(f2)), cipher);
    int i;
    do {
        i = in.read();
        if (i != -1)
            out.write(i);
    } while (i != -1);
    in.close();
    out.close();
}

From source file:Main.java

public static <T> List<T> deepCopy(List<T> src) throws IOException, ClassNotFoundException {
    ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
    ObjectOutputStream out = new ObjectOutputStream(byteOut);
    out.writeObject(src);//from   w  w  w  . ja  v  a  2  s .  c  om

    ByteArrayInputStream byteIn = new ByteArrayInputStream(byteOut.toByteArray());
    ObjectInputStream in = new ObjectInputStream(byteIn);
    @SuppressWarnings("unchecked")
    List<T> dest = (List<T>) in.readObject();
    return dest;
}

From source file:Main.java

public static Object getAsObject(String key) {
    byte[] data = getAsBinary(key);
    if (data != null) {
        ByteArrayInputStream bais = null;
        ObjectInputStream ois = null;
        try {/*from  ww  w  .  java  2  s  . c o m*/
            bais = new ByteArrayInputStream(data);
            ois = new ObjectInputStream(bais);
            Object reObject = ois.readObject();
            return reObject;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        } finally {
            try {
                if (bais != null)
                    bais.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                if (ois != null)
                    ois.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    return null;
}

From source file:Main.java

public static <T> List<T> readList(String root, String filename, Class<T> type) {
    List<T> objects = new ArrayList<>();
    File file = new File(root, filename);
    try {//from w  w w . j a v a  2 s. c o m
        if (file.exists()) {
            FileInputStream fis = new FileInputStream(file);
            ObjectInputStream ois = new ObjectInputStream(fis);
            Object object = ois.readObject();
            if (object instanceof List) {
                for (Object it : (List) object) {
                    objects.add(type.cast(it));
                }
            }
            ois.close();
            return Collections.unmodifiableList(objects);
        }
    } catch (Exception e) {
        Log.e(TAG, String.format("Failed to read [%s]", file), e);
    }
    return Collections.emptyList();
}

From source file:Main.java

public static final Object RestoreObject(final String path) {
    FileInputStream fileInputStream = null;
    ObjectInputStream objectInputStream = null;
    Object object = null;//  w  w w. j  a  v a  2s. c  o m
    File file = new File(path);
    if (!file.exists()) {
        return null;
    }
    try {
        fileInputStream = new FileInputStream(file);
        objectInputStream = new ObjectInputStream(fileInputStream);
        object = objectInputStream.readObject();
        return object;
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    } finally {
        try {
            if (objectInputStream != null) {
                objectInputStream.close();
            }
            if (fileInputStream != null) {
                fileInputStream.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return object;
}

From source file:Main.java

public static Object toObject(byte[] bytes) {
    Object obj = null;/*from  w  w w.  j a  v a 2  s.c  om*/
    try {
        ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
        ObjectInputStream ois = new ObjectInputStream(bis);
        obj = ois.readObject();
        ois.close();
        bis.close();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return obj;
}

From source file:Main.java

public static Object readObject(File file) {
    Object obj = null;//  www  .  ja  va2 s.  c om
    if (file != null && file.exists()) {
        FileInputStream fileInputStream = null;
        ObjectInputStream objectInputStream = null;

        try {
            fileInputStream = new FileInputStream(file);
            objectInputStream = new ObjectInputStream(fileInputStream);

            obj = objectInputStream.readObject();
        } catch (IOException | ClassNotFoundException e) {
            Log.d("readObject", e.getMessage());
        } finally {
            try {
                if (objectInputStream != null) {
                    objectInputStream.close();
                }
                if (fileInputStream != null) {
                    fileInputStream.close();
                }
            } catch (IOException e) {
                Log.d("readObject", e.getMessage());
            }

        }
    }
    return obj;
}