class Demo {
    
    void main(String[] args) {
        
        Fmu fmu = Fmu.from(new File("path/to/fmu.fmu")); //URLs are also supported
        FmuSlave slave = fmu.asCoSimulationFmu().newInstance();

        slave.simpleSetup();
        
        double stop = 10;
        double stepSize = 1.0/100;
        while(slave.getSimulationTime() <= stop) {
            if (!slave.doStep(stepSize)) {
                break;
            }
        }
        slave.terminate(); //or close, try with resources is also supported
        fmu.close();
        
    }
    
}

@SlaveInfo(
        modelName = "MyJavaSlave",
        author = "John Doe"
)
public class JavaSlave extends Fmi2Slave {

    @ScalarVariable(causality = Fmi2Causality.output)
    protected double realOut = 2.0;

    @ScalarVariable(causality = Fmi2Causality.output)
    protected int intOut = 99;

    @ScalarVariable(causality = Fmi2Causality.output)
    protected double[] realsOut = {50.0, 200.0};

    @ScalarVariable(causality = Fmi2Causality.local)
    protected String[] string = {"Hello", "world!"};

    public JaveSlave(Map<String, Object> args) {
        super(args);
    }   

    @Override
    public void doStep(double currentTime, double dt) {
        realOut += dt;
    }

}