return value in Eclipse debugger

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Larry - 13 Aug 2007 21:24 GMT

When using the Eclipse debugger, is there any way to see the value
that was just returned (or is about to be returned) from a method?

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Manish Pandit - 13 Aug 2007 22:42 GMT

> When using the Eclipse debugger, is there any way to see the value
> that was just returned (or is about to be returned) from a method?

If you set your breakpoint correctly, you should see all the variables
in scope showing up in the Variables subwindow at that breakpoint.
Stepping through the code can give you an idea of how the state
changes and one of those variables could very well be the one that the
method is returning. I hope this answers your question. Make sure you
are in the debug perspective in eclipse (Window->Open Perspective-

>Debug) or you'd not be able to see the Variables window.

-cheers,
Manish

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Tzadik.Vanderhoof@gmail.com - 14 Aug 2007 00:46 GMT

> > When using the Eclipse debugger, is there any way to see the value
> > that was just returned (or is about to be returned) from a method?
[quoted text clipped - 10 lines]
> -cheers,
> Manish

No, I knew all that. But suppose there is a complex expression in the
"return" statement?

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Manish Pandit - 14 Aug 2007 20:14 GMT

On Aug 13, 4:46 pm, Tzadik.Vanderh...@gmail.com wrote:

> > > When using the Eclipse debugger, is there any way to see the value
> > > that was just returned (or is about to be returned) from a method?
[quoted text clipped - 15 lines]
>
> - Show quoted text -

Maybe I did not get your question right, but you can always assign the
return value to a variable that can be watched via debug.

Assuming you mean a complex expression like :

return Math.sin(toRadians(x))*x+y^x%2;

can be replaced with :
double d = Math.sin(toRadians(x))*x+y^x%2;
return d;

-cheers,
Manish

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Ben Phillips - 14 Aug 2007 21:17 GMT

> double d = Math.sin(toRadians(x))*x+y^x%2;
> return d;

Wouldn't that be

double d = Math.sin(toRadians(x))*x+y**x%2;
return d;

?

;)

(One does not ordinarily use xor when working with doubles.)

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Lew - 14 Aug 2007 22:32 GMT

>> double d = Math.sin(toRadians(x))*x+y^x%2;
>> return d;
[quoted text clipped - 9 lines]
>
> (One does not ordinarily use xor when working with doubles.)

No, because "**" is not Java.

Signature

Lew

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Ben Phillips - 15 Aug 2007 03:37 GMT

>>> double d = Math.sin(toRadians(x))*x+y^x%2;
>>> return d;
[quoted text clipped - 11 lines]
>
> No, because "**" is not Java.

It was a joking reference to the recent Java 7 discussion where several
people suggested adding it for exponentiation. For now of course you'd
have to use Math.pow()...

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Larry - 15 Aug 2007 14:51 GMT

> On Aug 13, 4:46 pm, Tzadik.Vanderh...@gmail.com wrote:
>
[quoted text clipped - 31 lines]
> -cheers,
> Manish

I know... but I was hoping the debugger would have a way to look at
the return value without having to go in and change the code.

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return value in Eclipse debugger

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