JavaScriptException (GWT Javadoc)

java.lang.Object
- java.lang.Throwable
- - java.lang.Exception
  - - java.lang.RuntimeException
    - - com.google.gwt.core.client.JavaScriptException

All Implemented Interfaces:

java.io.Serializable
```
public final class JavaScriptException
extends java.lang.RuntimeException
```
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

Constructor Summary

Constructors
Modifier	Constructor and Description
	`JavaScriptException(java.lang.Object e)`
	`JavaScriptException(java.lang.Object e, java.lang.String description)`
`protected`	`JavaScriptException(java.lang.String message)` Used for testing instantiations.
	`JavaScriptException(java.lang.String name, java.lang.String description)`

Method Summary

Methods
Modifier and Type	Method and 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.
  - getException
```
@Deprecated
public JavaScriptObject getException()
```
    Deprecated. deprecated in favor for getThrown() and isThrownSet()
    
    Returns the original JavaScript 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.

Class JavaScriptException

Constructor Summary

Method Summary

Methods inherited from class java.lang.Throwable

Methods inherited from class java.lang.Object

Constructor Detail

JavaScriptException

JavaScriptException

JavaScriptException

JavaScriptException

Method Detail

isThrownSet

getThrown

getDescription

getException

getMessage

getName