import java.util.concurrent.locks.*;

class Kode {
    private String kode = null;
    Lock laas = new ReentrantLock();

    public boolean compareKode(String k) {
        return kode.equals(k);
    }

    public String getCode() {
        return kode;
    }

    public void addKode(String kode) {
        laas.lock();
        try {
            this.kode = kode;
        } finally {
            laas.unlock();
        }
    }

    public synchronized void addKode2(String kode) {
        this.kode = kode;
    }
}