[Scilab-users] Question about javasci V2

[Perrichon]

Hello Daniel

 

I’ve already met your problem one year ago, and for me it is really a bug.

 

I work with scilab x64 5.5.2, netbeans 7.01, on W7 or W10 platform.

 

I’ve sovled it in my application, so I’m just able to propose parts of code.

 

I’ve delay the 2 instructions Scilab sci = new Scilab(true)  and if (sci.open()) {, by creating a ScilabManager class, … and a thread class named  Idle

 

Part of ScilabManager  (also note the  public static void OpenScilab())

 

public class ScilabManager {

    

    public static Scilab sci;       //Driver Scilab

    public static boolean bScilabOpen;

    public static boolean InitScilab;   

 

    public  static Fifo FifoScilab;

    private static TListeFifo SciJob;

 

    static ScilabError TErrorScilab;

 

    public static File ScilabFile;

 

    private static int dim = 500;

    public static String [] Script;

    private static int iScript;

    

    public static Configuration AppConfiguration;  

    public static Log LogScilab;  

    

    public static int NumGraph=0;

 

 

    ScilabManager() {

        try {

            sci = new Scilab(true);

            InitScilab=true;

            

       } catch (JavasciException.InitializationException ex) {

            Logger.getLogger(ScilabManager.class.getName()).log(Level.SEVERE, null, ex);

        }

                

        

    }

    

    @SuppressWarnings("CallToThreadDumpStack")

    public static void OpenScilab() {

        

        

        try {

            

            bScilabOpen=sci.open();

            

        } catch (JavasciException ex) {

            ex.printStackTrace();

        }

        

        if (bScilabOpen) System.out.println("\nScilab est ouvert\n");

            else System.out.println("\nErreur ouverture Scilab\n");       

        

        ScilabError.ClearScilabError();       

        

        try {

            // Initialisation et chargements des fonctions Scilab

            //---------------------------------------------------

            AppConfiguration = new Configuration();

        } catch (FileNotFoundException ex) {

            Logger.getLogger(ScilabManager.class.getName()).log(Level.SEVERE, null, ex);

        } catch (IOException ex) {

            Logger.getLogger(ScilabManager.class.getName()).log(Level.SEVERE, null, ex);

        } catch (JavasciException ex) {

            Logger.getLogger(ScilabManager.class.getName()).log(Level.SEVERE, null, ex);

        }

        

        try {

            // Initialisation du fichier de log out (Traces commandes Scilab)

            //--------------------------------------------------------------

            LogScilab = new Log();

            OptsimView.SetLogFile();

        } catch (FileNotFoundException ex) {

            ex.printStackTrace();

        } catch (IOException ex) {

            ex.printStackTrace();

        }       

        

        Script = new String[dim];

 

Now note part of Idle task :

 

public class Idle extends Thread  {

    

    protected volatile boolean IdleRunning = true;

    public static boolean bCloseIdle=false;

    

    private static int Count=1;

    private static int setGraphe=0;

 

 

    private static JTextField TF=null;

    private static Timer bTimer;

    private static JLabel AnimationLabel;

    private static Icon idleicone;

 

    private int ThreadNumber;

 

 

    Idle (JTextField TFi, Timer busyIconTimer,

          JLabel statusAnimationLabel, Icon icone) {

            TF=TFi;

            bTimer=busyIconTimer;

            AnimationLabel=statusAnimationLabel;

            idleicone=icone;

            this.ThreadNumber=Count++;

    }

 

  @Override

  public synchronized void run() {

      

    boolean bTest;

    

    if (ScilabManager.InitScilab) {

        

            ScilabManager.OpenScilab();

    }

    

    ScilabManager.sci.exec("aPPeScilabJavasciv2=1;");    

 

    

    while (IdleRunning) { …etc

 

So instructions Scilab sci = new Scilab(true)  and if (sci.open are delayed.

 

This is the only solution I’ve found. After that Scilab well run with Java netbeans and javasci2.

 

Also well note that my program doesn’t work with Scilab 6.0.0 b2 at compile time and see :

 

 

http://bugzilla.scilab.org/show_bug.cgi?id=14626

 

Hope it helps you

 

Sincerely

Pierre

 

De : users [mailto:users-bounces at lists.scilab.org] De la part de Daniel Neutzler
Envoyé : mardi 31 janvier 2017 13:15
À : users at lists.scilab.org
Objet : [Scilab-users] Question about javasci V2

 

Hi, I am using Scilab 5.5.2 and trying to open a Scilab script from
Java. Therfore I followed the documentation: Compute and run with javasci v2.

I use Eclipse to compile and run. It works, but I want now to open it in "advanced mode"  to get grahpics
(Scilab sci = new Scilab(true);). If i do it, I get a compile Error. What's wrong ?
Code and Error Plot out see below.

Thank You for your Help,
Daniel Neutzler

####Error####
java.lang.ExceptionInInitializerError
    at org.scilab.modules.commons.xml.XConfiguration.<clinit>(Unknown Source)
    at org.scilab.modules.core.Scilab.<clinit>(Unknown Source)
    at org.scilab.modules.javasci.Call_ScilabJNI.Call_ScilabOpen(Native Method)
    at org.scilab.modules.javasci.Call_Scilab.Call_ScilabOpen(Unknown Source)
    at org.scilab.modules.javasci.Scilab.open(Unknown Source)
    at StartUp.main.main(main.java:17)
Caused by: java.lang.NullPointerException
    at java.io.File.<init>(Unknown Source)
    at org.scilab.modules.commons.ScilabConstants.<clinit>(Unknown Source)
    ... 6 more
Exception in thread "main" 

#### JAVA Code####

package StartUp;
import org.scilab.modules.javasci.Scilab;
import org.scilab.modules.types.ScilabType;
import java.io.File;
import java.io.FileNotFoundException;

public class main {
                 
    public static void main(String[] args) throws FileNotFoundException{
        System.out.println("Starte Programm Pin-Positionsanalyse-Tool V1.0...");
            
        try {
            Scilab sci = new Scilab(true); // Starts in advanced mode 
            if (sci.open()) {
            sci.execException(new File("C:/Users/Daniel/Desktop/test.sce"));
            sci.close();     
             } else {
                 System.out.println("Could not start Scilab ");
             } 
    /* Can be improved by other exceptions: AlreadyRunningException,
    * InitializationException, UndefinedVariableException,
    * UnknownTypeException, etc
    */
         } catch (org.scilab.modules.javasci.JavasciException e) {
             System.err.println("An exception occurred: " + e.getLocalizedMessage());
         }
    }
}

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