Java Utililty Methods Object Save

boolean writeObject(File f, Object obj)
write Object

boolean retObj = true;
if (!f.getParentFile().isDirectory()) {
 f.getParentFile().mkdirs();
FileOutputStream fileOutputStream = null;
ObjectOutputStream objectOutputStream = null;
try {
 fileOutputStream = new FileOutputStream(f);
...

void writeObject(File f, Serializable obj)
Serializes an object to a file, masking out annoying exceptions.

try {
 ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(f));
 oos.writeObject(obj);
 oos.close();
} catch (IOException e) {
 System.err.println("Exception writing file " + f + ": " + e);

void writeObject(File file, Object obj)
Write one object to the specified file.

createFileIfNotExist(file);
ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(file));
oos.writeObject(obj);
oos.close();

void writeObject(File file, Object object)
writes the spcified object to the file specified

mkdirs(file);
ObjectOutputStream output = null;
try {
 output = new ObjectOutputStream(new FileOutputStream(file));
 output.writeObject(object);
} finally {
 close(output, file);

void writeObject(File file, Object object)
write Object

try {
 FileOutputStream fileOut = new FileOutputStream(file);
 ObjectOutputStream out = new ObjectOutputStream(fileOut);
 out.writeObject(object);
 out.close();
 fileOut.close();
} catch (IOException e) {
 e.printStackTrace();
...

void writeObject(File file, Object object)
write Object

mkdirs(file.getParentFile());
OutputStream outputStream = null;
try {
 outputStream = new FileOutputStream(file);
 @SuppressWarnings("resource")
 ObjectOutputStream oos = new ObjectOutputStream(outputStream);
 oos.writeObject(object);
 oos.flush();
...

void writeObject(File file, Object object)
write Object

try (ObjectOutputStream outputStream = new ObjectOutputStream(new FileOutputStream(file))) {
 outputStream.writeObject(object);
 outputStream.flush();
} catch (IOException e) {
 throw new RuntimeException(e);

void writeObject(File file, Object object)
write Object

ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(file));
oos.writeObject(object);
oos.flush();
oos.close();

void writeObject(File outFile, Object data)
write Object

FileOutputStream fileOut = new FileOutputStream(outFile);
ObjectOutputStream outStream = new ObjectOutputStream(fileOut);
try {
 outStream.writeObject(data);
} finally {
 outStream.close();
 fileOut.close();

void writeObject(Object data, String filename)
write Object

File file = new File(filename);
if (!file.exists()) {
 file.getParentFile().mkdirs();
 file.createNewFile();
FileOutputStream fileOut = new FileOutputStream(file);
ObjectOutputStream out = new ObjectOutputStream(fileOut);
out.writeObject(data);
...