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Added in API level 1

Summary: Ctors | Inherited Methods | [Expand All]

AssertionError

public class AssertionError
extends Error

java.lang.Object
↳	java.lang.Throwable
	↳	java.lang.Error
		↳	java.lang.AssertionError

Known Direct Subclasses

AssertionFailedError

Known Indirect Subclasses

ComparisonFailure

Thrown to indicate that an assertion has failed.

The seven one-argument public constructors provided by this class ensure that the assertion error returned by the invocation:

     new AssertionError(expression)

has as its detail message the string conversion of expression (as defined in section 15.18.1.1 of The Java™ Language Specification), regardless of the type of expression.

Summary

Public constructors
`AssertionError()` Constructs an AssertionError with no detail message.
`AssertionError(Object detailMessage)` Constructs an AssertionError with its detail message derived from the specified object, which is converted to a string as defined in section 15.18.1.1 of The Java™ Language Specification.
`AssertionError(boolean detailMessage)` Constructs an AssertionError with its detail message derived from the specified `boolean`, which is converted to a string as defined in section 15.18.1.1 of The Java™ Language Specification.
`AssertionError(char detailMessage)` Constructs an AssertionError with its detail message derived from the specified `char`, which is converted to a string as defined in section 15.18.1.1 of The Java™ Language Specification.
`AssertionError(int detailMessage)` Constructs an AssertionError with its detail message derived from the specified `int`, which is converted to a string as defined in section 15.18.1.1 of The Java™ Language Specification.
`AssertionError(long detailMessage)` Constructs an AssertionError with its detail message derived from the specified `long`, which is converted to a string as defined in section 15.18.1.1 of The Java™ Language Specification.
`AssertionError(float detailMessage)` Constructs an AssertionError with its detail message derived from the specified `float`, which is converted to a string as defined in section 15.18.1.1 of The Java™ Language Specification.
`AssertionError(double detailMessage)` Constructs an AssertionError with its detail message derived from the specified `double`, which is converted to a string as defined in section 15.18.1.1 of The Java™ Language Specification.
`AssertionError(String message, Throwable cause)` Constructs a new `AssertionError` with the specified detail message and cause.

Inherited methods

From class


  
    java.lang.Throwable

`final void`	`addSuppressed(Throwable exception)` Appends the specified exception to the exceptions that were suppressed in order to deliver this exception.
`Throwable`	`fillInStackTrace()` Fills in the execution stack trace.
`Throwable`	`getCause()` Returns the cause of this throwable or `null` if the cause is nonexistent or unknown.
`String`	`getLocalizedMessage()` Creates a localized description of this throwable.
`String`	`getMessage()` Returns the detail message string of this throwable.
`StackTraceElement[]`	`getStackTrace()` Provides programmatic access to the stack trace information printed by `printStackTrace()`.
`final 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.
`Throwable`	`initCause(Throwable cause)` Initializes the cause of this throwable to the specified value.
`void`	`printStackTrace()` Prints this throwable and its backtrace to the standard error stream.
`void`	`printStackTrace(PrintWriter s)` Prints this throwable and its backtrace to the specified print writer.
`void`	`printStackTrace(PrintStream s)` Prints this throwable and its backtrace to the specified print stream.
`void`	`setStackTrace(StackTraceElement[] stackTrace)` Sets the stack trace elements that will be returned by `getStackTrace()` and printed by `printStackTrace()` and related methods.
`String`	`toString()` Returns a short description of this throwable.

From class


  
    java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Public constructors

AssertionError

Added in API level 1

AssertionError ()

Constructs an AssertionError with no detail message.

AssertionError

Added in API level 1

AssertionError (Object detailMessage)

Constructs an AssertionError with its detail message derived from the specified object, which is converted to a string as defined in section 15.18.1.1 of The Java™ Language Specification.

If the specified object is an instance of Throwable, it becomes the cause of the newly constructed assertion error.

Parameters
`detailMessage`	`Object`: value to be used in constructing detail message

See also:

getCause()

AssertionError

Added in API level 1

AssertionError (boolean detailMessage)

Constructs an AssertionError with its detail message derived from the specified boolean, which is converted to a string as defined in section 15.18.1.1 of The Java™ Language Specification.

Parameters
`detailMessage`	`boolean`: value to be used in constructing detail message

AssertionError

Added in API level 1

AssertionError (char detailMessage)

Constructs an AssertionError with its detail message derived from the specified char, which is converted to a string as defined in section 15.18.1.1 of The Java™ Language Specification.

Parameters
`detailMessage`	`char`: value to be used in constructing detail message

AssertionError

Added in API level 1

AssertionError (int detailMessage)

Constructs an AssertionError with its detail message derived from the specified int, which is converted to a string as defined in section 15.18.1.1 of The Java™ Language Specification.

Parameters
`detailMessage`	`int`: value to be used in constructing detail message

AssertionError

Added in API level 1

AssertionError (long detailMessage)

Constructs an AssertionError with its detail message derived from the specified long, which is converted to a string as defined in section 15.18.1.1 of The Java™ Language Specification.

Parameters
`detailMessage`	`long`: value to be used in constructing detail message

AssertionError

Added in API level 1

AssertionError (float detailMessage)

Constructs an AssertionError with its detail message derived from the specified float, which is converted to a string as defined in section 15.18.1.1 of The Java™ Language Specification.

Parameters
`detailMessage`	`float`: value to be used in constructing detail message

AssertionError

Added in API level 1

AssertionError (double detailMessage)

Constructs an AssertionError with its detail message derived from the specified double, which is converted to a string as defined in section 15.18.1.1 of The Java™ Language Specification.

Parameters
`detailMessage`	`double`: value to be used in constructing detail message

AssertionError

Added in API level 19

AssertionError (String message, 
                Throwable cause)

Constructs a new AssertionError with the specified detail message and cause.

Note that the detail message associated with cause is not automatically incorporated in this error's detail message.

Parameters
`message`	`String`: the detail message, may be `null`
`cause`	`Throwable`: the cause, may be `null`

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