DataBase - API

package me.trow.Classe;

import java.io.File;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

public class DB {

    private Connection conn;
    private File file;
    private Statement stmt;

    private DB(File f) {
        file = f;
        try {
            Class.forName("org.sqlite.JDBC");
            conn = DriverManager.getConnection("jdbc:sqlite:" + file);
            stmt = conn.createStatement();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private DB(String urlconn) {
        try {
            conn = DriverManager.getConnection(urlconn);
            stmt = conn.createStatement();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static DB load(File f) {
        return new DB(f);
    }

    public static DB load(String f) {
        return new DB(new File(f));
    }

    public static DB load(String host, String database, String user,
            String pass) {
        return new DB("jdbc:mysql://" + host + "/" + database + "?"
                + "user=" + user + "&password=" + pass);
    }

    public void update(String q) {
        try {
            stmt.executeUpdate(q);
        } catch (Exception e) {e.printStackTrace();}
    }

    public ResultSet query(String q) {
        try {
            return stmt.executeQuery(q);
        } catch (Exception e) {
        }
        return null;
    }

    public void close() {
        try {
            stmt.close();
            conn.close();
        } catch (Exception e) {}
    }

    public boolean isConnected() {
        try {
            return stmt!=null && conn!=null && !stmt.isClosed() && !conn.isClosed();
        } catch (Exception e) {}
        return false;
    }

    public Connection getConnection() {
        return conn;
    }

}