automatic boxing / unboxing ?

[Tomba]

Hi,

I'm working with Java 5.0 and somehow I can't figure out what the
problem is here:

Executing the following code:
try {
setter.invoke(bean, new Object[] { value });
} catch (IllegalArgumentException ex) {
System.out.println("Setter: " + setter + "\nArgument: " +
value.getClass().toString());
ex.printStackTrace();
}

I get the following output:

Setter: public void util.Transformation.setRelative(boolean)
Argument: class java.lang.Boolean
java.lang.IllegalArgumentException: object is not an instance of
declaring class ...

The function defenately exists but the problem seems to be the
conversion with Boolean and boolean. Shouldn't Java actually make it
work by unboxing the Boolean to the primitive boolean?
Hope you can see what I'm missing here... :/

Thank you!

 

[VisionSet]

try {
setter.invoke(bean, new Object[] { value });
} catch (IllegalArgumentException ex) {
System.out.println("Setter: " + setter + "\nArgument: " +
value.getClass().toString());
ex.printStackTrace();
}

Setter: public void util.Transformation.setRelative(boolean)
Argument: class java.lang.Boolean
java.lang.IllegalArgumentException: object is not an instance of
declaring class ...

It looks to me that the problem lies in not providing the correct arguments
to the invoke method, this is what is throwing the exception. Without the
code for invoke() it is not possible to know, but I guess invoke is
expecting different objects in the Object[]

 

[Thomas Hawtin]

try {
setter.invoke(bean, new Object[] { value });
} catch (IllegalArgumentException ex) {
System.out.println("Setter: " + setter + "\nArgument: " +
value.getClass().toString());
ex.printStackTrace();
}

Setter: public void util.Transformation.setRelative(boolean)
Argument: class java.lang.Boolean
java.lang.IllegalArgumentException: object is not an instance of
declaring class ...

It looks to me that the problem lies in not providing the correct arguments
to the invoke method, this is what is throwing the exception. Without the
code for invoke() it is not possible to know, but I guess invoke is
expecting different objects in the Object[]

Or bean is not a util.Transformation.

Tom Hawtin

 

[Tomba]

try {
setter.invoke(bean, new Object[] { value });
} catch (IllegalArgumentException ex) {
System.out.println("Setter: " + setter + "\nArgument: " +
value.getClass().toString());
ex.printStackTrace();
}

Setter: public void util.Transformation.setRelative(boolean)
Argument: class java.lang.Boolean
java.lang.IllegalArgumentException: object is not an instance of
declaring class ...

It looks to me that the problem lies in not providing the correct
arguments
to the invoke method, this is what is throwing the exception. Without the
code for invoke() it is not possible to know, but I guess invoke is
expecting different objects in the Object[]

Or bean is not a util.Transformation.

Tom Hawtin

Tested with some more output, and indeed bean is not a Transformation.
Made an error there. Thanks Tom