Package com.google.gwt.core.client

Class JavaScriptException

  • All Implemented Interfaces:
    java.io.Serializable
    public final class JavaScriptException
extends com.google.gwt.core.client.impl.JavaScriptExceptionBase
    Any JavaScript exceptions occurring within JSNI methods are wrapped as this class when caught in Java code. The wrapping does not occur until the exception passes out of JSNI into Java. Before that, the thrown object remains a native JavaScript exception object, and can be caught in JSNI as normal.

    The return value of Throwable.getStackTrace() may vary between browsers due to variations in the underlying error-reporting capabilities. When possible, the stack trace will be the stack trace of the underlying error object. If it is not possible to accurately report a stack trace, a zero-length array will be returned. In those cases where the underlying stack trace cannot be determined, Throwable.fillInStackTrace() can be called in the associated catch block to create a stack trace corresponding to the location where the JavaScriptException object was created. 

     try {
   nativeMethod();
 } catch (JavaScriptException e) {
   if (e.getStackTrace().length == 0) {
     e.fillInStackTrace();
   }
 }
    See Also:
    Serialized Form

    • Method Summary

      All Methods Instance Methods Concrete Methods Deprecated Methods 
      Modifier and Type Method Description
      java.lang.String getDescription()
      Returns the original JavaScript message of the exception; may be null.
      JavaScriptObject getException()
      Deprecated.
      deprecated in favor for getThrown() and isThrownSet()
      java.lang.String getMessage()  
      java.lang.String getName()
      Returns the original JavaScript type name of the exception; may be null.
      java.lang.Object getThrown()
      Returns the original thrown object from javascript; may be null.
      boolean isThrownSet()
      Returns true if a thrown object is not set for the exception.

      • Methods inherited from class java.lang.Throwable

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

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • JavaScriptException

        public JavaScriptException​(java.lang.Object e)
        Parameters:
        e - the object caught in JavaScript that triggered the exception

      • JavaScriptException

        public JavaScriptException​(java.lang.Object e,
                           java.lang.String description)
        Parameters:
        e - the object caught in JavaScript that triggered the exception
        description - to include in getMessage(), e.g. at the top of a stack trace

      • JavaScriptException

        public JavaScriptException​(java.lang.String name,
                           java.lang.String description)

      • JavaScriptException

        protected JavaScriptException​(java.lang.String message)
        Used for testing instantiations.
        Parameters:
        message - the detail message

    • Method Detail

      • isThrownSet

        public boolean isThrownSet()
        Returns true if a thrown object is not set for the exception.

      • getThrown

        public java.lang.Object getThrown()
        Returns the original thrown object from javascript; may be null.

      • getDescription

        public java.lang.String getDescription()
        Returns the original JavaScript message of the exception; may be null.

      • getMessage

        public java.lang.String getMessage()
        Overrides:
        getMessage in class java.lang.Throwable

      • getName

        public java.lang.String getName()
        Returns the original JavaScript type name of the exception; may be null.