Module java.base

Package java.io

Class InvalidClassException

java.lang.Object

java.lang.Throwable

java.lang.Exception

java.io.IOException

java.io.ObjectStreamException

java.io.InvalidClassException

All Implemented Interfaces:

Serializable

public class InvalidClassException
extends ObjectStreamException

Thrown when the Serialization runtime detects one of the following problems with a Class.

• The serial version of the class does not match that of the class descriptor read from the stream
• The class contains unknown datatypes
• The class does not have an accessible no-arg constructor
• The ObjectStreamClass of an enum constant does not represent an enum type
• Other conditions given in the Java Object Serialization Specification

Since:

1.1

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
String	classname	Name of the invalid class.

Constructor Summary

Constructors

Constructor	Description
InvalidClassException(String reason)	Report an InvalidClassException for the reason specified.
InvalidClassException(String cname, String reason)	Constructs an InvalidClassException object.
InvalidClassException(String cname, String reason, Throwable cause)	Report an InvalidClassException for the reason and cause specified.
InvalidClassException(String reason, Throwable cause)	Report an InvalidClassException for the reason and cause specified.

Method Summary

Modifier and Type	Method	Description
String	getMessage()	Produce the message and include the classname, if present.

Methods declared in class java.lang.Throwable

addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

classname

public String classname

Name of the invalid class.

Constructor Details

InvalidClassException

public InvalidClassException(String reason)

Report an InvalidClassException for the reason specified.

Parameters:

reason - String describing the reason for the exception.

InvalidClassException

public InvalidClassException(String cname,
 String reason)

Constructs an InvalidClassException object.

Parameters:

cname - a String naming the invalid class.

reason - a String describing the reason for the exception.

InvalidClassException

public InvalidClassException(String reason,
 Throwable cause)

Report an InvalidClassException for the reason and cause specified.

Parameters:

reason - String describing the reason for the exception.

cause - the cause

Since:

19

InvalidClassException

public InvalidClassException(String cname,
 String reason,
 Throwable cause)

Report an InvalidClassException for the reason and cause specified.

Parameters:

cname - a String naming the invalid class.

reason - String describing the reason for the exception.

cause - the cause

Since:

19

Method Details

getMessage

public String getMessage()

Produce the message and include the classname, if present.

Overrides:

getMessage in class Throwable

Returns:

the detail message string of this Throwable instance (which may be null).