# Class DuplicateFormatFlagsException

java.lang.Object
java.lang.Throwable
java.lang.Exception
java.lang.RuntimeException
java.lang.IllegalArgumentException
java.util.IllegalFormatException
java.util.DuplicateFormatFlagsException

All Implemented Interfaces:
  `Serializable`

public non-sealed class DuplicateFormatFlagsException extends IllegalFormatException
Unchecked exception thrown when duplicate flags are provided in the format specifier.

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

Since:
  1.5
See Also:
  - Serialized Form

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `DuplicateFormatFlagsException(String f)`
  Constructs an instance of this class with the specified flags.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `String`
  `getFlags()`
  Returns the set of flags which contains a duplicate flag.

  ### Methods declared in class Throwable

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

  ### Methods declared in class Object

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

- ## Constructor Details

  - ### DuplicateFormatFlagsException

    public DuplicateFormatFlagsException(String f)
    Constructs an instance of this class with the specified flags.
    Parameters:
      `f` - The set of format flags which contain a duplicate flag.

- ## Method Details

  - ### getFlags

    public String getFlags()
    Returns the set of flags which contains a duplicate flag.
    Returns:
      The flags