Is it due to this limitation than getFee() always returns 0?

How can blockchain.info determine the transaction fees, while I'm not able 
to using bitcoinj?

On Saturday, April 15, 2017 at 4:39:12 AM UTC-5, Andreas Schildbach wrote:
>
> On 04/15/2017 05:57 AM, Nishil Shah wrote: 
> > I'm able to get the transaction input address using getFromAddress(). 
> > However, when I try to get a value associated with a transaction input, 
> I 
> > keep getting null. Anyone know why this is? Is there any other way to 
> get 
> > it? 
>
> You only can get the input amount if it has a connected output. This is 
> usually only the case for transactions you created yourself. 
>
> This is a limitation of the Bitcoin transaction format. For redundancy 
> reasons, inputs do not have an amount -- they always spend a whole output. 
>
>
>

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