import java.util.Map.Entry;

public final class MapEntry implements Entry<String, Integer> {

    private final String key;
    private Integer value;

    public MapEntry(String key, Integer value) {
        this.key = key;
        this.value = value;
    }

    @Override
    public String getKey() {
        return key;
    }

    @Override
    public Integer getValue() {
        return value;
    }

    @Override
    public Integer setValue(Integer value) {
        Integer v = this.value;
        this.value = value;
        return v;
    }
}