How do I serialize an object to a file?

Object object = new javax.swing.JButton("push me");

try {
    // Serialize to a file
    ObjectOutput out = new ObjectOutputStream(new FileOutputStream("filename.ser"));
    out.writeObject(object);
    out.close();

    // Serialize to a byte array
    ByteArrayOutputStream bos = new ByteArrayOutputStream() ;
    out = new ObjectOutputStream(bos) ;
    out.writeObject(object);
    out.close();

    // Get the bytes of the serialized object
    byte[] buf = bos.toByteArray();
} catch (IOException e) {
}