以下是测试代码：
import java.sql.*;public class TestConn {void test(){Connection conn = null;Statement stmt = null;ResultSet rset = null;System.out.println(new java.util.Date());try {Class.forName("SQLite.JDBCDriver");conn = DriverManager.getConnection("jdbc:sqlite:/f:/test.db", //jdbc:oracle:thin:@hex:1521:ORCL"", "");conn.setAutoCommit(false);stmt = conn.createStatement();stmt.executeUpdate("create table hehe(id number, name varchar(32))");System.out.println("建表hehe成功!");for (int i=0; i<1000000; i++){stmt.executeUpdate("INSERT INTO hehe VALUES("+i+", '我爱中国"+i+"')");}conn.commit();System.out.println("不建索引查询:");System.out.println(new java.util.Date());rset = stmt.executeQuery("SELECT id, name FROM hehe where id > 499999 and name ='我爱中国500001'");if (rset.next()){System.out.println(rset.getInt("id"));System.out.println(rset.getString("name"));}if (rset!=null){ rset.close(); rset = null; }System.out.println(new java.util.Date());System.out.println("建索引:");System.out.println(new java.util.Date());stmt.executeUpdate("CREATE INDEX hehe_idx on hehe(id)");stmt.executeUpdate("CREATE INDEX hehe_idx2 on hehe(name)");conn.commit();System.out.println(new java.util.Date());System.out.println("建索引后的查询:");System.out.println(new java.util.Date());rset = stmt.executeQuery("SELECT id, name FROM hehe where id > 499999 and name = '我爱中国500001'");if (rset.next()){System.out.println(rset.getInt("id"));System.out.println(rset.getString("name"));}System.out.println(new java.util.Date());stmt.executeUpdate("drop table hehe");System.out.println("删除表hehe成功!");conn.commit();System.out.println(new java.util.Date());} catch(ClassNotFoundException cnfe) {System.out.println("Can't find class for driver: "+cnfe.getMessage());System.exit(-1);} catch (SQLException e){System.out.println(e.getMessage());System.exit(-1);} finally {try {if (rset!=null) rset.close();stmt.close();conn.close();} catch (SQLException e) {}}}public static void main(String[] args) {TestConn conn = new TestConn();conn.test();}
}