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Added in API level 1

UnknownFormatFlagsException

public class UnknownFormatFlagsException
extends IllegalFormatException

java.lang.Object
   ↳ java.lang.Throwable
     ↳ java.lang.Exception
       ↳ java.lang.RuntimeException
         ↳ java.lang.IllegalArgumentException
           ↳ java.util.IllegalFormatException
             ↳ java.util.UnknownFormatFlagsException


Unchecked exception thrown when an unknown flag is given.

Unless otherwise specified, passing a null argument to any method or constructor in this class will cause a NullPointerException to be thrown.

Summary

Public constructors

UnknownFormatFlagsException(String f)

Constructs an instance of this class with the specified flags.

Public methods

String getFlags()

Returns the set of flags which contains an unknown flag.

String getMessage()

Returns the detail message string of this throwable.

Inherited methods

Public constructors

UnknownFormatFlagsException

Added in API level 1
public UnknownFormatFlagsException (String f)

Constructs an instance of this class with the specified flags.

Parameters
f String: The set of format flags which contain an unknown flag

Public methods

getFlags

Added in API level 1
public String getFlags ()

Returns the set of flags which contains an unknown flag.

Returns
String The flags

getMessage

Added in API level 1
public String getMessage ()

Returns the detail message string of this throwable.

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

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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