Android Utililty Methods Object Serialization

List of utility methods to do Object Serialization

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Description

The list of methods to do Object Serialization are organized into topic(s).

Method

ObjectloadObjectFromFile(String filename)
load Object From File 
if (filename.startsWith(SERIALPREFIX)) {
    filename = serialFileName(filename);
File f = new File(filename);
try {
    InputStream is = new BufferedInputStream(new FileInputStream(f));
    if (filename.endsWith(".gz")) {
        is = new GZIPInputStream(is);
...
TreadObjectFromFile(File fileLocation)
read Object From File 
InputStream file = new FileInputStream(fileLocation);
InputStream buffer = new GZIPInputStream(file);
try (ObjectInput input = new ObjectInputStream(buffer)) {
    return (T) input.readObject();
} catch (ClassNotFoundException e) {
    throw new IOException(e);
ObjectreadObjectFromFile(String filename)
Read a serialized object from a file 
try {
    InputStream file = new FileInputStream(filename);
    InputStream buffer = new BufferedInputStream(file);
    ObjectInput input = new ObjectInputStream(buffer);
    try {
        return input.readObject();
    } finally {
        input.close();
...
voidsaveObjectAsFile(String filename, Object object)
save Object As File 
if (filename.startsWith(SERIALPREFIX)) {
    filename = serialFileName(filename);
File f = new File(filename);
try {
    ensureWriteable(f);
    OutputStream os = null;
    os = new BufferedOutputStream(new FileOutputStream(f));
...
voidwriteObjectToFile(File fileLocation, Object obj)
write Object To File 
OutputStream file = new FileOutputStream(fileLocation);
OutputStream buffer = new GZIPOutputStream(file);
try (ObjectOutput output = new ObjectOutputStream(buffer)) {
    output.writeObject(obj);
booleanwriteObjectToFile(Serializable obj, String filename)
Write a serializable object to a file 
try {
    OutputStream file = new FileOutputStream(filename);
    OutputStream buffer = new BufferedOutputStream(file);
    ObjectOutput output = new ObjectOutputStream(buffer);
    try {
        output.writeObject(obj);
    } finally {
        output.close();
...
StringobjectToString(Object o)
object To String 
if (o == null) {
    return null;
ByteArrayOutputStream baos = new ByteArrayOutputStream(32000);
try {
    ObjectOutputStream os = new ObjectOutputStream(
            new BufferedOutputStream(baos));
    os.flush();
...
ObjectstringToObject(String s)
string To Object 
if (s == null) {
    return null;
byte byteArray[] = decode(s);
ByteArrayInputStream baos = new ByteArrayInputStream(byteArray);
try {
    ObjectInputStream is = new ObjectInputStream(
            new BufferedInputStream(baos));
...
byte[]getBytes(Serializable obj)
get Bytes 
ByteArrayOutputStream bout = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(bout);
out.writeObject(obj);
out.flush();
byte[] bytes = bout.toByteArray();
bout.close();
out.close();
return bytes;
...
Mapdeserialize(final File file, final long serialTtl)
deserialize 
if (file.exists()
        && file.lastModified() < System.currentTimeMillis()
                - serialTtl) {
    if (log.isDebugEnabled()) {
        log.debug(String.format("Deleting previous serial %s "
                + "because it's older then %s m/s", file.getPath(),
                serialTtl));
    file.delete();
Map<String, Long> o = null;
try {
    if (file.exists()) {
        final ObjectInputStream in = new ObjectInputStream(
                new FileInputStream(file));
        try {
            o = (Map<String, Long>) in.readObject();
        } finally {
            if (in != null) {
                in.close();
} catch (Exception e) {
    log.error("Error: ", e);
if (o == null) {
    o = new HashMap<String, Long>();
return o;