kit-programmieren-ws1920-final1/src/edu/kit/informatik/Engine.java

package edu.kit.informatik;

public abstract class Engine extends RollingStock {
    protected String series;
    protected String name;

    public String getName() {
        return name;
    }

    @Override
    public String getIdentifier() {
        return String.format("%s-%s", series, getName());
    }

    @Override
    public boolean canCoupleFrontTo(RollingStock rollingStock) {
        // train-sets can ONLY connect to other matching train-sets, not to engines.
        return hasCouplingFront() && rollingStock.hasCouplingBack() && !(rollingStock instanceof TrainSet);
    }

    @Override
    public boolean canCoupleToTrainSetSeries(String series) {
        return false;
    }
}