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:

Field Summary

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

Constructor Summary

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

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.

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).

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https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/InvalidClassException.html