Java Utililty Methods ObjectOutputStream Write

T o = null;
try {
    FileInputStream fi = new FileInputStream(filename);
    ObjectInputStream oi = new ObjectInputStream(fi);
    o = expectedClass.cast(oi.readObject());
    oi.close();
    fi.close();
} catch (Exception e) {
...

try {
    data = (HashMap) readObject(filename);
} catch (IOException e) {
    e.printStackTrace();
} catch (ClassNotFoundException e) {
    e.printStackTrace();
return data;
...

Object obj = null;
FileInputStream fis = null;
GZIPInputStream gis = null;
ObjectInputStream ois = null;
try {
    fis = new FileInputStream(file);
    gis = new GZIPInputStream(fis);
    ois = new ObjectInputStream(gis);
...

try {
    java.io.FileInputStream fis = new java.io.FileInputStream(filename);
    java.io.ObjectInputStream inStream = new java.io.ObjectInputStream(fis);
    for (int i = 0; i < mat.length; i++)
        mat[i] = inStream.readDouble();
    inStream.close();
    inStream.close();
} catch (IOException e) {
...

ObjectInputStream ois = new ObjectInputStream(new FileInputStream(file));
Object qa = ois.readObject();
ois.close();
return qa;

Serializable result = null;
ObjectInputStream ois = new ObjectInputStream(new FileInputStream(file));
result = (Serializable) ois.readObject();
ois.close();
return result;

try {
    return loadSerialized(new FileInputStream(file));
} catch (IllegalArgumentException e) {
    throw new IllegalArgumentException("can't read serialized object from " + file + ": " + e);

Object object = null;
try {
    InputStream file = new FileInputStream(fileName);
    InputStream buffer = new BufferedInputStream(file);
    ObjectInput input = new ObjectInputStream(buffer);
    try {
        object = input.readObject();
    } finally {
...

InputStream file = new FileInputStream(fileName);
InputStream buffer = new BufferedInputStream(file);
ObjectInput input = new ObjectInputStream(buffer);
Object object = input.readObject();
input.close();
return object;

Map<String, Map<Integer, Integer>> classMap = new HashMap<String, Map<Integer, Integer>>();
ObjectInputStream ois;
try {
    ois = new ObjectInputStream(new BufferedInputStream(new GZIPInputStream(new FileInputStream(file))));
    int numClasses = ois.readInt();
    for (int i = 0; i < numClasses; i++) {
        String className = ois.readUTF();
        int numLines = ois.readInt();
...