Does somebody know a Java library which serializes a Java object hierarchy into Java code which generates this object hierarchy? Like Object/XML serialization, only that the output format is not binary/XML ... |
I am able to serialize an object into a file and then restore it again as is shown in the next code snippet. I would like to serialize the object into ... |
I am wondering whether it is safe to mix jdk 1.5 and 1.6 (Java 6) object serialization (biderctional communication). I searched for an explicit statement from sun concerning this question but ... |
I am serializing a class using simple-xml (http://simple.sourceforge.net/) but when i try to use @Element on a Point object i get an error, how can i transform this Point ... |
What is meant by "object serialization"? Can you please explain it with some examples?
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How can I read/write serializable object instances to a RandomAccessFile in Java? I want to be able to do this the same way you do it in c++ through structs. ... |
Lets say you have a class SomeClass which has its own implementation of toString(), and also has the ability to parse a new instance of itself by reading that same string.
Which ... |
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I have a node tree built out of Node objects.
They are more complex than the code I am showing but only have primitive or Serializable instance members.
Assuming each Node can have ... |
Given a class like this:
public class Person {
private String firstname;
private String lastname;
private PhoneNumber phone;
private PhoneNumber fax;
// ... constructors and methods
...
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public class Person {
private String firstname;
private String lastname;
private PhoneNumber phone;
private PhoneNumber fax;
// ... constructors and methods
private void calculate()
...
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In not so technical way, what is object serialization and the purpose of it? When should it be used?
(any analogies exampls welcome)
Thank You
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I need to serialize a java object which might change later on, like some of the variables can be added or removed. What are the pit falls of such an approach ... |
In anyone aware of a tool/script/program/whatever to create a java object instance from a binary java serialized object?
I don't have the .class file, so I can't ( afaik ) simply create ... |
I have a dummy Java Program, which I want to write in Clojure. It has a class which implements Serializable and a function which saves it. Since I have never written ... |
I am using the Java Serializable interface and the ObjectOutputStream to serialize objects (until now, this method has been sufficient for my purposes).
My API relies on object identity for some operations ... |
I'm looking for the format that Java uses to serialize objects. The default serialization serializes the object in a binary format. In particular, I'm curious to know if two runs of ... |
I am looking for a XML serialization framework which has an option for a XML configuration instead of annotation to name classes and fields.
I looked at Simple and XStream but I ... |
I'm looking for a low-level encryption to write questions/answers for a test/exam application in Java. Both the questions and exam are objects. Basically, I need a way to serialize a object, ... |
I am writing the service to implement the audit in our application wherein users can view the status of a particular entity before and after any modification and should also be ... |
I try to serialize an object that contains an other object which is itself serializable.
Is there a way to make it work ? The pointer to the other object seems to ... |
I have a question that for example I have a GameStartegy class that has 53 fields and the type of all is one interface for example Strategy and one of these ... |
What's the best way to record the size of certain objects as they are being serialized? For example, once objects of type A, B, C are serialized, record the size ... |
I am developping a CORBA like inter object protocol that would support object aggregate transmission.
When objects of an aggregate are serialized, they may have references to objets serialized later. These ... |
I have a custom INIFile class that I've written that read/write INI files containing fields under a header. I have several classes that I want to serialize using this class, but ... |
I am looking for a way to serialize a class in Java into it's superclass, and then convert it to a byte array and send it over a network.
Here is an ... |
I have been trying to implement and undo/redo system in a game I am coding in Java. I am taking the approach of serializing the state of the game after each ... |
I am working on a project and I need to save user configuration. The configuration is a set of Jchechboxes I need to store their state (true, false). Which do you ... |
I have a problem with the reference of a variable when loading a saved serialized object from a data file. All the variables referencing to the same object doesn't seem to ... |
Sometimes (quite a lot, actually) we get a situation in Java where two objects are pointing to the same thing. Now if we serialise these separately it is quite appropriate that ... |
I am currently using XStream to serialize some of my objects that don't implement Serializable. Is there a way to tell XStream to use Java's default serialization if the object does ... |
I'm writing a little Java program (it's an ImageJ plugin, but the problem is not specifically ImageJ related) and I have some problem, most probably due to the fact that I ... |
Good day.
I know that in order to save object state in Java I should use serialization. But in every single topic about serialization states that I must save my object somewhere ... |
For various reasons I have a custom serialization where I am dumping some fairly simple objects to a data file. There are maybe 5-10 classes, and the object graphs that result ... |
I have a complex object, with fields and reference to database that I would like to pass as serialized object. I implemented the interface, but on the other hand it doesn't ... |
The problem is that every time I execute the main method, the old content of a.xml is lost and is substituted with a new one. How to append content to the ... |
I have a very large object which I wish to serialize. During the process of serialization, it comes to occupy some 130MB of heap as an weblogic.utils.io.UnsyncByteArrayOutputStream. I am using a ... |
I have a class that contains an object of type Object (which is used as a monitor for synchronization). Since Objects are not Serializable, what can I substitute to make ... |
I'm trying to read all the objects stored in a *.ser file and store them in a array of objects. How can I get the number of objects stored in that ... |
I want to generate a XML String for a given object. What is the best API to serialize an object to XML String using Java 1.4?
Thanks,
RT
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how can I write many serializable objects to a single file and then read a few of the objects as and when needed?
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I have a city map with streets that I need to (de-)serialize. Each street is identified by City and id, like this:
private final City city;
private final long id;
The city contains a ... |
During serializing objects, can we assign name to different objects? So, that on the time of reading objects, i can call any object by its name and later on can access ... |
I've run into an issue that is requiring me to serialize Stanford Parser objects (all different sorts) to a file for later use. As far as I know, ... |
Does anyone know if there is a straightforward way to serialize a parsed cyberneko ElementNSImpl object?
Here is my example in Clojure of serializing the whole DOM (an HTMLDocumentImpl object). This ... |
I am working on calculaitng the size [memory used] of a java object [hashmap] . It contains elements of different data types [at runtime] so [ no-of-elem * size-of-element] is not ... |
What's the difference between readObject and defaultReadObject in the ObjectInputStream class? I can't seem to find very much information on the difference.
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I have two methods, one that serialize the Object... and it works ok:
public void record()throws RecordingException
{
ObjectOutputStream outputStream = null;
...
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I am using XStream to serialize Java objects to XML. Is it possible to customize XStream so that when it serializes an object it inserts an attribute in the root XML ... |
Right my my application saves its objects as xml. The reason why I am considering serializing the objects is for a speed gain. Are there any other benefits of serializing?
... |
I need to do the same operation but in one stream. May you help me, please?
public static byte[] archivingAndSerialization(Object object){
ByteArrayOutputStream serializationByteArray = new ByteArrayOutputStream();
ByteArrayOutputStream archvingByteArray = new ...
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I have a Swing Program. I am having trouble to save entire main class to a file.
public class GreenHouseMain extends JFrame implements ActionListener,
MouseListener, ...
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I had been trying to do an object serialiation,deserialisation program.When i am giving the File Name directly in the FileInputStream ,my program runs quite finely and i was able to deserialise ... |
I was reading this article about serialization.
It was the first time I saw encrypting a serialized object.
I'm trying to encrypt some serializable object and then save them into a ... |
I am using XStream to serialize an object which contains a Date field to XML and back again. However, the dates written to XML are an hour earlier than the actual ... |
As far I know, Kryo serialization / deserialization happens per object. Is it possible to serialize multiple objects into a single file?. One of workaround suggested in another similar SO question ... |
I have an object passed from an API call. Now I tried to send this object using ObjectOutputStream, but the class does not implement Serializable.
I can't edit the class to make ... |
I have a need to send messages (requests from the User to the Engine, and responses from the Engine to the User) over a socket. So the flow is essentially
...
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is it possible to read member values from java objects that were serialized to disc without the classes of the objects?
i think this is a big NO, ITS NOT POSSIBLE -- ... |
I'm trying to serialize java objects but i keep getting a list of errors. my program accepts multiple values and creates an instance of a class with them. the created object ... |
I've got an object which contains list of strings. How is it possible to define that the String.class should be serialized with alias "somealias" instead of "string" through annotations?
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I am programming towards the Bloomberg Desktop Java API where I subscribe to and recieve market data in Message objects, containing different fields and corresponding values of different types, through the ... |
I'm having problems with the following code. Serializing the object seems to work, but when I try to deserialize it, method in.available() returns 0 immediately(it doesn't goes into the while loop). ... |
I have an issue when saving the object serialization then loading it again..
First i have class with originally the following string "A", "B", "C"
I saved it with some data to file...
Later ... |
I have third party platform jars of which APIs need to be tested using webservices.
These APIs take custom objects which are non serializable.
Say for example some of the APIs are ... |
I'm serializing Objects to XML with the help of XStream.
How do I tell XStream to insert an xmlns to the XML output of my object?
As an example, I have this ... |
this may be a stupid question but I wanted to convert a 2 dimensional string array into a serializable object in java. What is the best way to do this?
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Is there an implementation that will serialize a Java object as Java code? For example, if I have the object
Map<String,Integer> m = new Map<String,Integer>();
m.put("foo",new Integer(21));
I could serialize this using
ObjectOutputStream out = ...
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Not all projects require Databases.
Project I am currently working on doesn't want any DB to be used at all. Rather it should use object serialization to file.
This implementation would do ... |
In C# we use serializer.ToXmlString/FromXmlString.
Is there any Java equivalent for this?
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I am writing an object to a file. The object is basically a data chunk from a file, with some other information added. The thing I don't understand is that the ... |
i have a question on whether the use of using primitive data type as opposed to their wrapper counter parts have any due effects on their serialization?
For example, i have a ... |
How does the below code work?
class A {
int a = 10;
}
...
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I have like this,
Class P {
pub int id;
pub P(id) { this.id = id; }
...
pub Set<Integer> parentTTList;
}
Class TT {
pub int id;
pub TT(id) { this.id = id; }
pub List<P> manyPList;
}
List<TT> manyTTList;
Then TT tA ...
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When you save an object in java (using serialize), where is the file created?
For example if you used this method http://www.rgagnon.com/javadetails/java-0075.html
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Is there a way of estimating (roughly) in memory object size from Serialized object size in Java
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I want to kow whether the attribute foo will also be serialized in the following example or not (written out of my mind):
public class Example implements Serializable {
...
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I was going through a blog and one question came to my head. Is it possible to overwrite the way ObjectOutputStream is writing.
Let's say i am writing to a ... |
So I am using a proprietary java library in a project which I don't have access to source code.
It throws a Message object, and obviously I can't implement Serializable. It's generated ... |
I need to serial an object and store it on disk. I used Java's built in and that works fine, as long as the class doesn't change to much. If ... |
I have an object which contains an array of objects. I would like to
- A) store this array of objects in the same file
- B) use custom serialization for those objects.
For ... |
In Java, I would like to use hierarchies of immutable POJOs to express my domain model.
e.g.
final ServiceId id = new ServiceId(ServiceType.Foo, "my-foo-service")
final ServiceConfig cfg = new ServiceConfig("localhost", 8080, "abc", ...
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This was my first time ever trying to save object in a file, so I have no idea where I'm going wrong. This is just a test program, the original one ... |
I am using the function below to convert a DOM Document object into a String in Java.
public static String convertDocumentToString(final Document doc)
{
...
|
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Hi Frank Wu 1-U should check the Java API. If Integer class has implemented a Serializable then it is serializable otherwise not. 2- A class which implements a Serializable interface produces serailizable object. 3- No this class is not Serializable to make it serializable u should define it like this... Class A implements Serializable { String a; SerializedClass B; } 4. ... |
Hey everyone Im having a problem passing a variable in RMI. This is for school, so there are some fairly strict requirements that I have to follow. I have a servlet that is the controlling servlet for the app this servlet is to use requestdispatcher to forward requests to the appropriate other servlet for processing. One of the servlets gets a ... |
A copy would be sent. Serializable is what java looks for to see if it can bundle up the object and send it to a stream. Your definition of remote is not exactly true. A remote object can certainly be passed if it also implements serializable, however, the Remote interface is really nothing more than a flag. To actually make much ... |
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Ryan, You sure do. The serialized method is a recursive method that will go through and serialize your collection and all object it contains. A vector of vector is just an object containing objects that can hold other objects. You can have vector of vector of vector...Each object has to implement the Serializable interface. -Peter |
I have a requirement to store a serialized object in a database. I have serialized an object to a byte array. I tried constructing a String from the byte array so I could write the String to my database. However, the character encoding alters some of the values such that I cannot call myString.getBytes() and deserialize the object from the resulting ... |
Java uses Hex code to write into serialized file... if u have any hex-file editor u can view it... or the usual way is to deserialize the objects in the file and perform get() methods (must be in the class def) to printout the info u want. hope this would be helpful to u. regards, sreek |
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Oracle definitely supports BLOBs as does Informix. SQL Server 7 supports the Text data type as up to 2 GB of variable length data, as well as the VarBinary and Binary data types for binary data from 1-8000 bytes. (There is also the Image data type that can also contain up to 2 GB of variable-length binary data) OP |
This isn't too difficult. When writing the objects to a file you need to make sure that their integrity as java objects is retained. This is done through serialization. An object that is serializable can be successfully serialized (converted to a serial format) and unserialized. To write an object to a file, all you need to do is something like this: ... |
I want to create remote logger. The remote logger will transfer message Object to the remote server. The Object is serialized before being trnsfered. I want to implement port listener that will count how many Objects were recieved. The listener must be between the the sender and reciever. How can I find out the Object1 was transfered and Object2 is being ... |
When you serialize myHats, you will also end up serializing the Vector and all objects referenced by the Vector. When you deserialize, you will get copies of each of these objects, not the original. This is actually a simple way to code a deep copy, if that's what you want, rather than a shallow copy. |
Here is the problem. I have a log class which is responsible for recording things to a file and when asked, reading them back. In a unit test for this class I sent 10 log entries (a small class containing a date and a string) into the log. These were serialized through an ObjectOutputStream into a new file. Then I asked ... |
I'm having trouble doing serialization of multiple objects to a file. When I use the following code, which opens the file, writes all objects and closes it, it works fine. But when I open the same file and append some other objects, I get "java.io.StreamCorruptedException: Type code out of range, is -84" error. first version: ObjectOutputStream oos = new ObjectOutputStream( new ... |
suppose I have a Stack class which acts as a runtime stack which I use to store stuff, how do i write all the contents of the stack to file using obj serialization? do i invoke writeObject() and just pass a Stack object in? or is there a catch to this? i tried this and even when i pop more stuff ... |
Consider a class containing a data set in Vector. I need to store it in a file thru serialzation so i can use a writeObject. Once this is in the file, whenever the data set changes i need to update the file. However with WriteObject, everytime the whole data set is written into the file. This can become a performance issue. ... |