Package javax.servlet

Class ServletException

  • All Implemented Interfaces:
    java.io.Serializable
    Direct Known Subclasses:
    QuietServletException, UnavailableException
    public class ServletException
extends java.lang.Exception
    Defines a general exception a servlet can throw when it encounters difficulty.
    See Also:
    Serialized Form

    • Constructor Summary

      Constructors 
      Constructor Description
      ServletException()
      Constructs a new servlet exception.
      ServletException​(java.lang.String message)
      Constructs a new servlet exception with the specified message.
      ServletException​(java.lang.String message, java.lang.Throwable rootCause)
      Constructs a new servlet exception when the servlet needs to throw an exception and include a message about the "root cause" exception that interfered with its normal operation, including a description message.
      ServletException​(java.lang.Throwable rootCause)
      Constructs a new servlet exception when the servlet needs to throw an exception and include a message about the "root cause" exception that interfered with its normal operation.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.Throwable getRootCause()
      Returns the exception that caused this servlet exception.

      • Methods inherited from class java.lang.Throwable

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

      • Methods inherited from class java.lang.Object

        equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Constructor Detail

      • ServletException

        public ServletException()
        Constructs a new servlet exception.

      • ServletException

        public ServletException​(java.lang.String message)
        Constructs a new servlet exception with the specified message. The message can be written to the server log and/or displayed for the user.
        Parameters:
        message - a String specifying the text of the exception message

      • ServletException

        public ServletException​(java.lang.String message,
                        java.lang.Throwable rootCause)
        Constructs a new servlet exception when the servlet needs to throw an exception and include a message about the "root cause" exception that interfered with its normal operation, including a description message.
        Parameters:
        message - a String containing the text of the exception message
        rootCause - the Throwable exception that interfered with the servlet's normal operation, making this servlet exception necessary

      • ServletException

        public ServletException​(java.lang.Throwable rootCause)
        Constructs a new servlet exception when the servlet needs to throw an exception and include a message about the "root cause" exception that interfered with its normal operation. The exception's message is based on the localized message of the underlying exception.

        This method calls the getLocalizedMessage method on the Throwable exception to get a localized exception message. When subclassing ServletException, this method can be overridden to create an exception message designed for a specific locale.

        Parameters:
        rootCause - the Throwable exception that interfered with the servlet's normal operation, making the servlet exception necessary

    • Method Detail

      • getRootCause

        public java.lang.Throwable getRootCause()
        Returns the exception that caused this servlet exception.
        Returns:
        the Throwable that caused this servlet exception