[FIXED] JFuzzyLogic gives error in Eclipse IDE while code working well with another IDE

Issue

While the same code working in NetBeans IDE It gives this error on eclipse ! I'm getting this error after running the code and giving the input

Exception in thread "main" java.lang.NoClassDefFoundError: net/sourceforge/jFuzzyLogic/FIS at pkt.Resturant.(Resturant.java:17) at pkt.Program.main(Program.java:15) Caused by: java.lang.ClassNotFoundException: net.sourceforge.jFuzzyLogic.FIS at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ... 2 more

Resturant.java file

package pkt;

import java.io.File;
import java.net.URISyntaxException;

import net.sourceforge.jFuzzyLogic.FIS;

public class Resturant {
    private FIS fis;
    private double servis;
    private double yemek;

    public Resturant(double servis, double yemek) throws URISyntaxException {
        this.servis = servis;
        this.yemek = yemek;
        File dosya = new File(getClass().getResource("Model.fcl").toURI());
        fis = FIS.load(dosya.getPath(), true);
        fis.setVariable("servis", servis);
        fis.setVariable("yemek", yemek);
        fis.evaluate();
    }

    public Resturant() throws URISyntaxException {
        File dosya = new File(getClass().getResource("Model.fcl").toURI());
        fis = FIS.load(dosya.getPath(), true);
    }

    public FIS getModel() {
        return fis;
    }

    @Override
    public String toString() {
        String cikti = "servis: " + servis + "\nYemek: " + yemek + "\nTur: " + fis.getVariable("tur").getValue();
        return cikti;
    }
}

Program.java file

package pkt;

import java.net.URISyntaxException;
import java.util.Scanner;
import net.sourceforge.jFuzzyLogic.plot.JFuzzyChart;

public class Program {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
                System.out.print("Servis (0-9): ");
        double servis = in.nextDouble();
        System.out.print("Yemek (0-9): ");
        double yemek = in.nextDouble();
        try {
            Resturant r = new Resturant(servis,yemek);
                        System.out.print(r);
        } catch(URISyntaxException e) {
            e.printStackTrace();
        }
    }
}

And the JFuzzyLogic file Model.fcl

FUNCTION_BLOCK model

VAR_INPUT
    servis : REAL;
    yemek : REAL;
END_VAR

VAR_OUTPUT
    tur : REAL;
END_VAR

FUZZIFY servis
    TERM kotu := (0,1)(4,0);
    TERM iyi := (1,0)(4,1)(6,1)(9,0);
    TERM mukemmel := (6,0)(9,1);
END_FUZZIFY

FUZZIFY yemek
    TERM kotu := (0,1)(3,1)(6,0);
    TERM lezzetli := (4,0)(9,1);
END_FUZZIFY

DEFUZZIFY tur
    TERM ucuz := (0,1)(20,1)(50,0);
    TERM orta := (40,0)(60,1)(80,0);
    TERM iyi := (70,0)(85,1)(100,0);
    METHOD : COG;
    DEFAULT := 0;
END_DEFUZZIFY

RULEBLOCK kuralblock1
    AND : MIN;
    ACT : MIN;
    ACCU : MAX;
    
    RULE 1 : IF servis IS kotu OR yemek IS kotu THEN tur IS ucuz;
    RULE 2 : IF servis IS iyi THEN tur IS orta;
    RULE 3 : IF servis IS mukemmel AND yemek IS lezzetli THEN tur IS iyi;
    
END_RULEBLOCK

END_FUNCTION_BLOCK

Solution

I figured out what the problem is, It's the way of adding the FazzyLogic library! Instead of adding it to the Classpath I added it to the Modulepath! I've no experience with java neither eclipse IDE.

Answered By - Nermin Kaya