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Error in indicator: java.lang.NullPointerException
 Post subject: Error in indicator: java.lang.NullPointerException Post rating: 0   New post Posted: Wed 06 Mar, 2019, 23:28 

User rating: 0
Joined: Tue 11 Oct, 2016, 16:41
Posts: 4
Can someone tell me where is the error in code on the bottom? I supose it's connected with startIndex and endIndex but I'm not sure and I don't know how to fix it.

All the time the same message: "Error in indicator: java.lang.NullPointerException"

I wanted to useichimoku indicator as a input of my own indicator, but first i wanted to check if it works, unfortunatelly it's not working :(

public IndicatorResult calculate(int startIndex, int endIndex) {
        //calculating startIndex taking into account lookback value
        if (startIndex - getLookback() < 0) {
            startIndex = getLookback();
        }
        if (endIndex + getLookforward() >= inputs[0][0].length) {
            endIndex = inputs[0][0].length - 1 - getLookforward();
        }
        if (startIndex > endIndex) {
            return new IndicatorResult(0, 0);
        }
                 
        ichi.setInputParameter(0, inputs[0]); 
       
        ichi.setOptInputParameter(0, timePeriod1);   
        ichi.setOptInputParameter(1, timePeriod2);
        ichi.setOptInputParameter(2, timePeriod3);
       
        ichi.setOutputParameter(0, outputs[0]);   
        ichi.setOutputParameter(1, outputs[1]);   
        ichi.setOutputParameter(2, outputs[2]);     
        ichi.setOutputParameter(3, outputs[3]);     
        ichi.setOutputParameter(4, outputs[4]);         
       
        ichi.calculate(startIndex, endIndex);       
               
        IndicatorResult ir = ichi.calculate(startIndex, endIndex);
       
        return ir;
    }


Attachments:
own_ichi.java [5.5 KiB]
Downloaded 36 times
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 Post subject: Re: Error in indicator: java.lang.NullPointerException Post rating: 0   New post Posted: Fri 08 Mar, 2019, 23:01 

User rating: 15
Joined: Thu 20 Apr, 2017, 22:42
Posts: 145
Location: Russian Federation,
Try looking for details of NullPointerException in the 'logs' folder


 
 Post subject: Re: Error in indicator: java.lang.NullPointerException Post rating: 0   New post Posted: Tue 12 Mar, 2019, 18:01 

User rating: 0
Joined: Tue 11 Oct, 2016, 16:41
Posts: 4
where can I find 'logs' folder?


 
 Post subject: Re: Error in indicator: java.lang.NullPointerException Post rating: 0   New post Posted: Thu 14 Mar, 2019, 13:12 

User rating: 15
Joined: Thu 20 Apr, 2017, 22:42
Posts: 145
Location: Russian Federation,
On windows: right click Jforex icon -> Properties ... check where it is installed. There should be subfolder named "logs"


 

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