home | O'Reilly's CD bookshelfs | FreeBSD | Linux | Cisco | Cisco Exam  

Java in a Nutshell

Previous Chapter 24
The java.io Package

24.40 java.io.ObjectInputValidation (JDK 1.1)

A class implements this interface and defines the validateObject() method in order to be able to validate itself when it, and all the objects it depends on, have been completely deserialized from an ObjectInputStream. The validateObject() method is only invoked, however, if the object is passed to ObjectInputStream.registerValidation(); this must be done from the readObject() method of the object. Note that if an object is deserialized as part of a larger object graph, its validateObject() method is not invoked until the entire graph is read, and the original call to ObjectInputStream.readObject() is about to return.

validateObject() should throw an InvalidObjectException if the object fails validation. This stops object serialization, and causes the original call to ObjectInputStream.readObject() to terminate with the InvalidObjectException exception.

public abstract interface ObjectInputValidation {
    // Public Instance Methods
            public abstract void validateObject() throws InvalidObjectException;

Passed To:


Previous Home Next
java.io.ObjectInputStream (JDK 1.1) Book Index java.io.ObjectOutput (JDK 1.1)

Java in a Nutshell Java Language Reference Java AWT Java Fundamental Classes Exploring Java