Added in [API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) Summary: [Inherited Methods](https://developer.android.com/reference/java/util/IllegalFormatException#inhmethods)

# IllegalFormatException


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class
IllegalFormatException
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extends https://developer.android.com/reference/java/lang/IllegalArgumentException


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|---|---|---|---|---|---|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object) ||||||
| ↳ | [java.lang.Throwable](https://developer.android.com/reference/java/lang/Throwable) |||||
|   | ↳ | [java.lang.Exception](https://developer.android.com/reference/java/lang/Exception) ||||
|   |   | ↳ | [java.lang.RuntimeException](https://developer.android.com/reference/java/lang/RuntimeException) |||
|   |   |   | ↳ | [java.lang.IllegalArgumentException](https://developer.android.com/reference/java/lang/IllegalArgumentException) ||
|   |   |   |   | ↳ | java.util.IllegalFormatException |

|---|
| Known direct subclasses [DuplicateFormatFlagsException](https://developer.android.com/reference/java/util/DuplicateFormatFlagsException), [FormatFlagsConversionMismatchException](https://developer.android.com/reference/java/util/FormatFlagsConversionMismatchException), [IllegalFormatCodePointException](https://developer.android.com/reference/java/util/IllegalFormatCodePointException), [IllegalFormatConversionException](https://developer.android.com/reference/java/util/IllegalFormatConversionException), [IllegalFormatFlagsException](https://developer.android.com/reference/java/util/IllegalFormatFlagsException), [IllegalFormatPrecisionException](https://developer.android.com/reference/java/util/IllegalFormatPrecisionException), [IllegalFormatWidthException](https://developer.android.com/reference/java/util/IllegalFormatWidthException), [MissingFormatArgumentException](https://developer.android.com/reference/java/util/MissingFormatArgumentException), [MissingFormatWidthException](https://developer.android.com/reference/java/util/MissingFormatWidthException), [UnknownFormatConversionException](https://developer.android.com/reference/java/util/UnknownFormatConversionException), [UnknownFormatFlagsException](https://developer.android.com/reference/java/util/UnknownFormatFlagsException) |---|---| | [DuplicateFormatFlagsException](https://developer.android.com/reference/java/util/DuplicateFormatFlagsException) | Unchecked exception thrown when duplicate flags are provided in the format specifier. | | [FormatFlagsConversionMismatchException](https://developer.android.com/reference/java/util/FormatFlagsConversionMismatchException) | Unchecked exception thrown when a conversion and flag are incompatible. | | [IllegalFormatCodePointException](https://developer.android.com/reference/java/util/IllegalFormatCodePointException) | Unchecked exception thrown when a character with an invalid Unicode code point as defined by `https://developer.android.com/reference/java/lang/Character#isValidCodePoint(int)` is passed to the `https://developer.android.com/reference/java/util/Formatter`. | | [IllegalFormatConversionException](https://developer.android.com/reference/java/util/IllegalFormatConversionException) | Unchecked exception thrown when the argument corresponding to the format specifier is of an incompatible type. | | [IllegalFormatFlagsException](https://developer.android.com/reference/java/util/IllegalFormatFlagsException) | Unchecked exception thrown when an illegal combination flags is given. | | [IllegalFormatPrecisionException](https://developer.android.com/reference/java/util/IllegalFormatPrecisionException) | Unchecked exception thrown when the precision is a negative value other than `-1`, the conversion does not support a precision, or the value is otherwise unsupported. | | [IllegalFormatWidthException](https://developer.android.com/reference/java/util/IllegalFormatWidthException) | Unchecked exception thrown when the format width is a negative value other than `-1` or is otherwise unsupported. | | [MissingFormatArgumentException](https://developer.android.com/reference/java/util/MissingFormatArgumentException) | Unchecked exception thrown when there is a format specifier which does not have a corresponding argument or if an argument index refers to an argument that does not exist. | | [MissingFormatWidthException](https://developer.android.com/reference/java/util/MissingFormatWidthException) | Unchecked exception thrown when the format width is required. | | [UnknownFormatConversionException](https://developer.android.com/reference/java/util/UnknownFormatConversionException) | Unchecked exception thrown when an unknown conversion is given. | | [UnknownFormatFlagsException](https://developer.android.com/reference/java/util/UnknownFormatFlagsException) | Unchecked exception thrown when an unknown flag is given. | |

<br />

*** ** * ** ***

Unchecked exception thrown when a format string contains an illegal syntax
or a format specifier that is incompatible with the given arguments. Only
explicit subtypes of this exception which correspond to specific errors
should be instantiated.

## Summary

| ### Inherited methods |
|---|---|
| From class ` https://developer.android.com/reference/java/lang/Throwable ` |---|---| | ` final void` | ` https://developer.android.com/reference/java/lang/Throwable#addSuppressed(java.lang.Throwable)(https://developer.android.com/reference/java/lang/Throwable exception) ` Appends the specified exception to the exceptions that were suppressed in order to deliver this exception. | | ` https://developer.android.com/reference/java/lang/Throwable` | ` https://developer.android.com/reference/java/lang/Throwable#fillInStackTrace()() ` Fills in the execution stack trace. | | ` https://developer.android.com/reference/java/lang/Throwable` | ` https://developer.android.com/reference/java/lang/Throwable#getCause()() ` Returns the cause of this throwable or `null` if the cause is nonexistent or unknown. | | ` https://developer.android.com/reference/java/lang/String` | ` https://developer.android.com/reference/java/lang/Throwable#getLocalizedMessage()() ` Creates a localized description of this throwable. | | ` https://developer.android.com/reference/java/lang/String` | ` https://developer.android.com/reference/java/lang/Throwable#getMessage()() ` Returns the detail message string of this throwable. | | ` https://developer.android.com/reference/java/lang/StackTraceElement` | ` https://developer.android.com/reference/java/lang/Throwable#getStackTrace()() ` Provides programmatic access to the stack trace information printed by `https://developer.android.com/reference/java/lang/Throwable#printStackTrace()`. | | ` final https://developer.android.com/reference/java/lang/Throwable` | ` https://developer.android.com/reference/java/lang/Throwable#getSuppressed()() ` Returns an array containing all of the exceptions that were suppressed, typically by the `try`-with-resources statement, in order to deliver this exception. | | ` https://developer.android.com/reference/java/lang/Throwable` | ` https://developer.android.com/reference/java/lang/Throwable#initCause(java.lang.Throwable)(https://developer.android.com/reference/java/lang/Throwable cause) ` Initializes the *cause* of this throwable to the specified value. | | ` void` | ` https://developer.android.com/reference/java/lang/Throwable#printStackTrace()() ` Prints this throwable and its backtrace to the standard error stream. | | ` void` | ` https://developer.android.com/reference/java/lang/Throwable#printStackTrace(java.io.PrintWriter)(https://developer.android.com/reference/java/io/PrintWriter s) ` Prints this throwable and its backtrace to the specified print writer. | | ` void` | ` https://developer.android.com/reference/java/lang/Throwable#printStackTrace(java.io.PrintStream)(https://developer.android.com/reference/java/io/PrintStream s) ` Prints this throwable and its backtrace to the specified print stream. | | ` void` | ` https://developer.android.com/reference/java/lang/Throwable#setStackTrace(java.lang.StackTraceElement[])(https://developer.android.com/reference/java/lang/StackTraceElement stackTrace) ` Sets the stack trace elements that will be returned by `https://developer.android.com/reference/java/lang/Throwable#getStackTrace()` and printed by `https://developer.android.com/reference/java/lang/Throwable#printStackTrace()` and related methods. | | ` https://developer.android.com/reference/java/lang/String` | ` https://developer.android.com/reference/java/lang/Throwable#toString()() ` Returns a short description of this throwable. | ||
| From class ` https://developer.android.com/reference/java/lang/Object ` |---|---| | ` https://developer.android.com/reference/java/lang/Object` | ` https://developer.android.com/reference/java/lang/Object#clone()() ` Creates and returns a copy of this object. | | ` boolean` | ` https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object)(https://developer.android.com/reference/java/lang/Object obj) ` Indicates whether some other object is "equal to" this one. | | ` void` | ` https://developer.android.com/reference/java/lang/Object#finalize()() ` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. | | ` final https://developer.android.com/reference/java/lang/Class<?>` | ` https://developer.android.com/reference/java/lang/Object#getClass()() ` Returns the runtime class of this `Object`. | | ` int` | ` https://developer.android.com/reference/java/lang/Object#hashCode()() ` Returns a hash code value for the object. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#notify()() ` Wakes up a single thread that is waiting on this object's monitor. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#notifyAll()() ` Wakes up all threads that are waiting on this object's monitor. | | ` https://developer.android.com/reference/java/lang/String` | ` https://developer.android.com/reference/java/lang/Object#toString()() ` Returns a string representation of the object. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#wait(long,%20int)(long timeoutMillis, int nanos) ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#wait(long)(long timeoutMillis) ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#wait()() ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*. | ||