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Added in API level 28

MalformedParametersException

public class MalformedParametersException
extends RuntimeException

java.lang.Object
   ↳ java.lang.Throwable
     ↳ java.lang.Exception
       ↳ java.lang.RuntimeException
         ↳ java.lang.reflect.MalformedParametersException


Thrown when the java.lang.reflect package attempts to read method parameters from a class file and determines that one or more parameters are malformed.

The following is a list of conditions under which this exception can be thrown:

  • The number of parameters (parameter_count) is wrong for the method
  • A constant pool index is out of bounds.
  • A constant pool index does not refer to a UTF-8 entry
  • A parameter's name is "", or contains an illegal character
  • The flags field contains an illegal flag (something other than FINAL, SYNTHETIC, or MANDATED)
See Executable.getParameters() for more information.

See also:

Summary

Public constructors

MalformedParametersException()

Create a MalformedParametersException with an empty reason.

MalformedParametersException(String reason)

Create a MalformedParametersException.

Inherited methods

Public constructors

MalformedParametersException

Added in API level 28
public MalformedParametersException ()

Create a MalformedParametersException with an empty reason.

MalformedParametersException

Added in API level 28
public MalformedParametersException (String reason)

Create a MalformedParametersException.

Parameters
reason String: The reason for the exception.

Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.

Last updated 2026-08-03 UTC.

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