[Java] serialization (file read/write)

About serialization

The serialized class must be implements serializable. Otherwise, an exception is thrown.

Some changes to the serialized class will affect the serialized object. For example, the object will be cleared.

 

Appendix: Example:

Private file myfile = new file (" .txt ");

 

// Serialized file writing

Fileoutputstream filestream = new fileoutputstream (myfile );

Objectoutputstream OS = new objectoutputstream (filestream );

For (Book element: mylist ){

OS. writeobject (element );

}

OS. Close ();

 

// Read data through deserialization

Try {

Fileinputstream filestream = new fileinputstream (myfile );

Objectinputstream OS = new objectinputstream (filestream );

 

While (filestream! = NULL ){

Book succeeded k = (book) OS. readobject ();

Mylist. Add (sort K );

}

OS. Close ();

} Catch (exception ex ){}