serializable class

What does serialization do?This is simply to preserve the state of various objects in memory (i.e., instance variables, not methods), and to read the saved object state again. Although you can save object states in a variety of ways, Java provides

ZZ From: http://www.cnblogs.com/peida/archive/2013/04/23/3036035.htmlWhat is an annotation (Annotation):Annotation(note) Is that Java provides a way and a way to associate any information or any metadata (metadata) with elements in a source program.

1. What is Java object serialization The Java platform allows us to create reusable Java objects in memory, but in general, these objects can exist only when the JVM is running, that is, the life cycle of these objects is no longer than the life

In writing Javame program, we often need to save some data to the phone, but also often want to be able to save objects to the phone inside, but javame there is no reflection mechanism, there is no Java.io.Serializable interface, so there is no

Preface The so-called 工欲善其事 its prerequisite, for developers to improve the coding efficiency, an efficient development tool is essential, I believe that the blog to see the friends have been understanding of the IntelliJ idea, so this is not the

It programmer development must-all kinds of resources download list, the most complete IT resources in history, personal collection summary. The bean Serializable Interface interface allows the bean to serialize, turning it into a binary stream that

A very simple situation. Non-intrusive version Serializable members Derived classes Pointer Array STL Container Version of the class Split the Serialize into Save/load File The output file (archive) is similar to the output data stream (stream).

Create a project 1. Add a table named rwtest to the SQL Server MYTest database. The table field is set as follows: A. uniquely identifies the field name is "ID"and the type is Int. B. a field of type VarChar called

Serialversionuid is used to indicate compatibility between different versions of a class. If you modify this class, you want to modify this value. Otherwise, an error occurs when a class that was previously serialized with the old version of the

As you can see, the default serialization mechanism is not difficult to manipulate. But what if there are special requirements? We may have special security issues, we don't want to serialize a part of the object, or a child object does not have to

Readers may wonder why an object is needed to recover from its serialized state. For example, suppose we serialize an object and pass it over the network as a file to another machine. At this point, can a program located on another machine use only

https://cloud.tencent.com/developer/article/1004820Spark Stomp: Database (Hbase+mysql)ObjectiveIn the process of using spark streaming to persist the results of calculations, we often need to manipulate the database to count or change some values.A

A [Dls_dead_local_store]Description: Dead store to unused local variablesWORKAROUND: The local variable is not used after it is defined, the object is instantiated and then re-assigned value(b) [St_write_to_static_from_instance_method]Description:

The goal of object serialization is to either save the object on disk or transfer it over the network. The implementation mechanism is to allow the object to be transformed into a platform-independent binary stream.The serialization mechanism for

In-depth understanding of Java: Annotations (Annotation) Basic conceptsWhat is an annotation (Annotation):　　Annotation (note) Is that Java provides a way and a way for an element in a meta-program to correlate any information with any metadata

Plug-in configuration Ctrl+alt+s Search maven, configure the MAVEN repository Search Plugins Add MyBatis Plugin Search the git configuration path to the Git.exe of the installation directory Youdao Dictionary plugin: translation

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

Java deserialization principle-demo (a) 0x00 What is Java serialization and deserialization?Java serialization refers to the process of converting a Java object into a sequence of bytes that is easy to store in memory, files, and databases, and the

Serialversionuid Effect:Serialization preserves the uniqueness of the object in order to maintain version compatibility, that is, deserialization while the version is being upgraded.There are two ways to build:One is the default 1L, for example:

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