serializable interface

The Java serialization technique allows you to write the state of an object into a byte stream, and you can read the data in that byte stream from somewhere else and reconstruct the same object. This mechanism allows you to propagate objects through

When two processes are communicating remotely, each other can send various types of data. Regardless of the type of data, it is transmitted over the network in the form of a binary sequence. The sender needs to convert the Java object to a sequence

In real-world development, we will write an object to a file for persistence. Then this class must implement a serializable interface to write! So how does Java persist the object?Java serialization is the conversion of an object into a string of

I. The concept of serialization and deserialization　　The process of converting an object to a sequence of bytes is called serialization of an object .　　The process of reverting a sequence of bytes to an object is called deserialization of the object

41. What is the use of A.hashcode ()? What is the relationship with A.equals (b)?The Hashcode () method corresponds to the hash value of the integer type of the object. It is often used for hash-based collection classes such as Hashtable, HashMap,

31. String s = new string ("xyz"); how many stringobject have been created? Can I inherit the String class?Two or one is possible, "XYZ" corresponds to an object, the object is placed in a string constant buffer, and the constant "XYZ" is the one in

1. Why do you want to serialize? --Keep Java objects in memory on disk for persistent storage --Transfer objects over the network --Transmitted via RMI (remote Procedure call invocation). By serialization, the object can be transformed into a

        Serialization (serialization) is the process of converting the state information of an object into a form that can be stored or transmitted. Typically, an object is stored in a storage medium, such as a file or a memory buffer. In the

Object serialization is a way to turn an object into a binary data stream. If an object of a class wants to be serialized, it implements the serializable interface, which is an identity interface (only the interface is defined and no method is

Usually we are in Java memory object, is unable to do IO operation or network communication, because in the IO operation or network communication, people do not know what the memory object is a thing, so the object must be expressed in some way,

A listener that listens for changes to properties in a domain objectThe event listener for the change of properties in a domain object is the listener used to listen for ServletContext, HttpSession, HttpServletRequest property Change information

In the course Lecture03 _ application framework and key components _ 1, the instructor introduced that Intent is the medium for passing parameters between Activity and Service, the usage and example of using Intent and Bundle to transmit data

Java programming implementation object clone (copy) code details, java details Clone: It's amazing to hear that the world's first cloned goat Dolly uses the Cell Nucleus transplantation technology to cultivate new individuals in adult cells of

Java Collection Source learning Note (ii) ArrayList analysis>> about ArrayListArrayList directly inherits Abstractlist, realizes the list, randomaccess, cloneable, serializable interface,Why is it called "ArrayList" because the inside of ArrayList

Java interview third bullet, java interview 1Both Computers are in the same network environment,AComputer Access failureBShared files on the computer. What are the possible causes of this phenomenon?Is it caused? What should I do? First, determine

Java serialization Serializable (detailed example) 1. What is serialization and deserialization?Serialization is a process of describing objects in a series of bytes. deserialization is a process of recreating these bytes into an object. 2. Under

Java object cloning and java cloningI. Preface Two days ago, I went to apply for a pen question from a company, which had the following programming questions: How do you understand object cloning in Java? At that time, I was overwhelmed. Although I

1. xml configuration a separate class is designed for the joint primary key as the primary key class, such as studentka, Serializable interface B, rewrite equals () and hashCode () why do I need to write equals () and hashCode () methods? The same

Original address: http://www.apkbus.com/forum.php?mod=viewthread&tid=13576&fromuid=3402Java Serializable (serialization) of the understanding and summary of the specific implementation processHow does an in-memory object exist?  What is the state of

Activation and passivation of JavaBean objects:If a property, such as String, is placed in the session field, or if a person class is placed in the session field, in order to implement the passivation and activation of the session, the JavaBean must