java 操作mysql基础操作

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public static void main(String[] args) throws SQLException, ClassNotFoundException {
		// TODO Auto-generated method stub
		// 1、动态加载驱动包
		Class.forName("org.sqlite.JDBC");
		// 2、获取数据库连接对象
//		Connection connection = DriverManager.getConnection("jdbc:sqlite:test.db");
		Connection connection = DriverManager.getConnection("jdbc:sqlite:msg.db");
		// 3、获取操作SQL语句的对象
		Statement statement = connection.createStatement();
		// 4、执行sql语句
		statement.executeUpdate("create table if not exists record(id INTEGER primary key,user varchar(10),time varchar(20),msg varchar(100))");
		statement.executeUpdate("insert into record(user,time,msg) values('11111','2018-7-5 10:07:00','今天是个好天气……')");
		statement.executeUpdate("insert into record(user,time,msg) values('22222','2018-7-5 10:07:16','今天是个坏天气……')");
		statement.executeUpdate("insert into record(user,time,msg) values('11111','2018-7-5 10:07:35','今天是个好日子……')");
		
		// 5、获取查询结果
		ResultSet resultSet = statement.executeQuery("select * from record where msg not null");
		// 循环获取查询的数据行
		while (resultSet.next()) {
			// 切记：ResultSet的列索引从1开始
			System.out.println("序号：" + resultSet.getInt(1) + "，用户：" + resultSet.getString("user")
			+ "，时间：" + resultSet.getString("time")+ "，内容：" + resultSet.getString("msg"));
		}
		// 6、关闭
		statement.close();
		connection.close();
		char c = 'A';
		char c1 = 65;// ASCII美国标准交换码
		char c2 = '\u0065';// Unicode全球统一编码
		System.out.println(c);
		System.out.println(c1);
		System.out.println(c2);
	}