import org.checkerframework.checker.index.qual.IndexFor;
import org.checkerframework.checker.index.qual.IndexOrHigh;

public class AndExample {

    @SuppressWarnings("index") // forward reference to field iYearInfoCache
    private static final @IndexOrHigh("iYearInfoCache") int CACHE_SIZE = 1 << 10;

    private static final @IndexFor("iYearInfoCache") int CACHE_MASK = CACHE_SIZE - 1;

    private static final String[] iYearInfoCache = new String[CACHE_SIZE];

    private String getYearInfo(int year) {
        return iYearInfoCache[year & CACHE_MASK];
    }
}