Class AssertionError

java.lang.Object
java.lang.Throwable
java.lang.Error
java.lang.AssertionError
All Implemented Interfaces:
Serializable
public class AssertionError extends Error
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 §5.1.11 of The Java Language Specification), regardless of the type of expression.
Since:
1.4
See Also:

  • Constructor Summary

    Constructors
    Constructor
    Description
    AssertionError()
    Constructs an AssertionError with no detail message.
    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 §5.1.11 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 §5.1.11 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 §5.1.11 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 §5.1.11 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 §5.1.11 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 §5.1.11 of The Java Language Specification.
    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 §5.1.11 of The Java Language Specification.
    AssertionError(String message, Throwable cause)
    Constructs a new AssertionError with the specified detail message and cause.

  • Method Summary

    Methods declared in class Throwable

    addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString
    Modifier and Type
    Method
    Description
    final void
    addSuppressed(Throwable exception)
    The specified exception is going to be suppressed in order to give priority to this exception (primary exception) and to be appended to the list of suppressed exceptions.
    Throwable
    fillInStackTrace()
    Record in the receiver a walkback from the point where this message was sent.
    Throwable
    getCause()
    Answers the cause of this Throwable, or null if there is no cause.
    String
    getLocalizedMessage()
    Answers the extra information message which was provided when the throwable was created.
    String
    getMessage()
    Answers the extra information message which was provided when the throwable was created.
    StackTraceElement[]
    getStackTrace()
    Answers an array of StackTraceElement.
    final Throwable[]
    getSuppressed()
    Returns an array of exceptions suppressed, typically by the automatically generated code from the try-with-resources statement, in order to give priority to this exception (primary exception).
    Throwable
    initCause(Throwable throwable)
    Initialize the cause of the receiver.
    void
    printStackTrace()
    Outputs a printable representation of the receiver's walkback on the System.err stream.
    void
    printStackTrace(PrintStream err)
    Outputs a printable representation of the receiver's walkback on the stream specified by the argument.
    void
    printStackTrace(PrintWriter err)
    Outputs a printable representation of the receiver's walkback on the writer specified by the argument.
    void
    setStackTrace(StackTraceElement[] trace)
    Sets the array of StackTraceElements.
    String
    toString()
    Answers a string containing a concise, human-readable description of the receiver.

    Methods declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
    boolean
    equals(Object o)
    Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    May cause performance issues, deadlocks and hangs.
    final Class<? extends Object>
    getClass()
    Answers the unique instance of java.lang.Class which represents the class of the receiver.
    int
    hashCode()
    Answers an integer hash code for the receiver.
    final void
    notify()
    Causes one thread which is waiting on the receiver to be made ready to run.
    final void
    notifyAll()
    Causes all threads which are waiting on the receiver to be made ready to run.
    final void
    wait()
    Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
    final void
    wait(long time)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
    final void
    wait(long time, int frac)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

  • Constructor Details

    • AssertionError

      public AssertionError()
      Constructs an AssertionError with no detail message.

    • AssertionError

      public 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 §5.1.11 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 - value to be used in constructing detail message
      See Also:

    • AssertionError

      public 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 §5.1.11 of The Java Language Specification.
      Parameters:
      detailMessage - value to be used in constructing detail message

    • AssertionError

      public 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 §5.1.11 of The Java Language Specification.
      Parameters:
      detailMessage - value to be used in constructing detail message

    • AssertionError

      public 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 §5.1.11 of The Java Language Specification.
      Parameters:
      detailMessage - value to be used in constructing detail message

    • AssertionError

      public 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 §5.1.11 of The Java Language Specification.
      Parameters:
      detailMessage - value to be used in constructing detail message

    • AssertionError

      public 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 §5.1.11 of The Java Language Specification.
      Parameters:
      detailMessage - value to be used in constructing detail message

    • AssertionError

      public 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 §5.1.11 of The Java Language Specification.
      Parameters:
      detailMessage - value to be used in constructing detail message

    • AssertionError

      public 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 - the detail message, may be null
      cause - the cause, may be null
      Since:
      1.7