Re: simplest of code

A "try" block has to be followed by a "catch" (for exceptions) and/or a "finally" block.

Hence the error message.

These are basic Java questions and not Weka related.

Cheers, Peter

On November 9, 2021 6:59:05 PM GMT+13:00, Bob Matthews <[email protected]> wrote:
>
>OK................
>
>I have the following code:-
>
>*********************
>
>OSV = ((mid_price_close - PDCC)/PDCC) / btheta;
>
>//************************************************************************
>   // run weka and make a prediction
>     /**
>    * Performs a prediction.
>    *
>    * @param v the value of the input variable to use for making a 
>prediction
>    * @return the predicted value (class index), returns -1 if it fails 
>to make prediction
>    * @throws Exception if prediction fails
>    */
>   try {
>       // [B] create instance
>       // create the current instance
>       double[] values = new double[header.numAttributes()];
>       for (int i = 0; i < values.length; i++)
>         values[i] = Utils.missingValue();
>       // - numeric
>       values[0] = OSV;
>       DenseInstance currentInstance = new DenseInstance(1.0, values);
>       currentInstance.setDataset(header);
>
>       // [C] classify nominal class
>       // classifyInstance() just returns the index of the predicted 
>label (the one with the highest probability) as a double
>       double prediction = cls.classifyInstance(currentInstance);
>       System.out.println("prediction: " + prediction);
>
>       return (int) prediction;
>   }
>
>*******************************
>
>Errow message:-
>
>Syntax error, [on the last line] insert "Finally" to complete try 
>statement ??
>
>Bob M
>
>On 11/9/2021 4:52 PM, Peter Reutemann wrote:
>
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--
Peter Reutemann
Dept. of Computer Science
University of Waikato, NZ
+64 (7) 858-5174 (office)
+64 (7) 577-5304 (home office)
http://www.cms.waikato.ac.nz/~fracpete/
http://www.data-mining.co.nz/.

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