sqllite你懂得生成db文件

先下载个sqllite 可视化工具http://www.sqliteexpert.com/download.html

然后上代码 你懂得

public class Sqllite {

 /**
  * @param args
  * @throws ClassNotFoundException
  */
 
 
 public static void main(String[] args) throws ClassNotFoundException {
  // TODO Auto-generated method stub
   try {
      long start = System.currentTimeMillis();
      // 连接SQLite的JDBC
      Class.forName("org.sqlite.JDBC");

      // 建立一个数据库名test.db的连接，如果不存在就在当前目录下创建之
     Connection cOnn= DriverManager
        .getConnection("jdbc:sqlite://d:/test.db");
      long end = System.currentTimeMillis();
      System.out.println("创建数据库文件并连接耗费时间：" + (end - start));
     
      conn.close();
     
      start = System.currentTimeMillis();
      cOnn= DriverManager.getConnection("jdbc:sqlite://d:/test.db");
      end = System.currentTimeMillis();
      System.out.println("数据库连接耗费时间：" + (end - start));
     
      start = System.currentTimeMillis();
      Statement stat = conn.createStatement();
      // 创建一个表，两列
      stat.executeUpdate("create table tbl1(name varchar(20), salary int);");  
      end = System.currentTimeMillis();
      System.out.println("创建表耗费时间：" + (end - start));
     
      // 插入数据
      start = System.currentTimeMillis();
      stat.executeUpdate("insert into tbl1 values('林凡',8000);");
      stat.executeUpdate("insert into tbl1 values('罗航',7800);");
      stat.executeUpdate("insert into tbl1 values('小利',5800);");
      stat.executeUpdate("insert into tbl1 values('密诏',9100);");
    
      end = System.currentTimeMillis();
      System.out.println("插入四行数据耗费时间：" + (end - start));
     
      start = System.currentTimeMillis();
      ResultSet rs = stat.executeQuery("select * from tbl1;"); // 查询数据
      while (rs.next()) { // 将查询到的数据打印出来
       System.out.print("name = " + rs.getString("name") + " "); // 列属性一
       System.out.println("salary = " + rs.getString("salary")); // 列属性二
      }
      rs.close();
      end = System.currentTimeMillis();
      System.out.println("查询数据耗费时间：" + (end - start));  
     
      conn.close(); // 结束数据库的连接

     } catch (Exception e) {
      e.printStackTrace();
     }
    }
   }