Location lookup

SpatialLookup.java

import java.sql.Connection
import java.sql.DriverManager
import java.sql.PreparedStatement
import java.sql.ResultSet
import java.sql.SQLException
import java.util.concurrent.TimeUnit

class Location {
    public String world;
    public double x, y, z;

    Location(String string) {
        if (string == null) return;

        String[] elems = string.split(",");
        world = elems[0];
        x = Double.parseDouble(elems[1]);
        y = Double.parseDouble(elems[2]);
        z = Double.parseDouble(elems[3]);
    }

    @Override
    int hashCode() {
        return Objects.hash(world, x, y, z);
    }

    @Override
    boolean equals(Object other) {
        if (!(other instanceof Location)) {
            return false;
        }

        Location o = (Location) other;
        return x == o.x && y == o.y && z == o.z && world == o.world;
    }
}

Location testBlock = new Location("south,5576,175,1707");

try {
    long now = System.nanoTime();
    Class.forName("org.sqlite.JDBC");
    Connection dbConnection = DriverManager.getConnection("jdbc:sqlite:C:/Users/tmiller/Documents/Loka/pts/plugins/TheArtifact/trees.db");

    Set<Location> placedBlocks = new HashSet<>();
    PreparedStatement psql = dbConnection.prepareStatement("SELECT * FROM trees");
    ResultSet result = psql.executeQuery();
    while (result.next()) {
        String location = String.format("%s,%d,%d,%d",
                result.getString(4),
                result.getInt(1),
                result.getInt(2),
                result.getInt(3));
        placedBlocks.add(new Location(location));
    }

    psql.close();

    println "Loaded " + placedBlocks.size() + " blocks in " + TimeUnit.MILLISECONDS.convert(System.nanoTime() - now, TimeUnit.NANOSECONDS) + "ms";

    now = System.nanoTime();
    println "Does exist? " + placedBlocks.contains(testBlock) + " checked in " + (System.nanoTime() - now) + " nanos";
    dbConnection.close();
} catch (SQLException | ClassNotFoundException e) {
}