to replace the fucking swith in java,reduce the code lines

Switcher

import java.util.HashMap;
import java.util.Map;

/**
 * replace
 * Created by Rock on 2017/6/26.
 */
public class Switcher<T> {

    private Map<T, Consumer<T>> mapper = new HashMap<>();

    private Consumer defaults;

    public Switcher<T> cases(T s, Consumer<T> consumer) {
        mapper.put(s, consumer);
        return this;
    }

    public  Switcher<T> defaults(Consumer<T> consumer){
        this.defaults = consumer;
        return this;
    }

    public void trigger(T s) {
        if (!mapper.containsKey(s) && defaults!=null){
            defaults.call(s);
            return;
        }

        Consumer consumer = mapper.get(s);
        if (consumer != null) {
            consumer.call(s);
        }
    }

    public interface Consumer<T> {

        void call(T s);
    }
}

use like this

Switcher<String> switchCarType = new Switcher<String>()
                .defaults(s -> binding.rgCarType.check(R.id.rbAll))
                .cases(CarType.BOX, s -> binding.rgCarType.check(R.id.rbBox))
                .cases(CarType.PLATE, s -> binding.rgCarType.check(R.id.rbPlate))
                .cases(CarType.SELF, s -> binding.rgCarType.check(R.id.rbSelf))
                .cases(CarType.TRACTOR, s -> binding.rgCarType.check(R.id.rbTractor))
                .cases(CarType.TRAILER, s -> binding.rgCarType.check(R.id.rbTrailer));