如果你想知道java annotation是什么？你可以先看看：“http://.b510.hongten.jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

/**
*
* @author Hongten</br>
* @date 2012-7-16
*
*/
public class JDBCTest {
@SuppressWarnings("static-access")
public static void main(String[] args) {
JDBCUtil jdbcUtil = new JDBCUtil();
String sql = "select * from mymails";
try {
Class.forName(jdbcUtil.getDriver());
Connection conn = DriverManager.getConnection(jdbcUtil.getUrl(), jdbcUtil.getUserName(), jdbcUtil.getPasswrod());
PreparedStatement ps = conn.prepareStatement(sql);
ResultSet rs = ps.executeQuery();
while (rs.next()) {
System.out.println("id : " + rs.getInt(1) + " name : " + rs.getString(2) + " mail : " + rs.getString(3));
}
// 关闭记录集
if (rs != null) {
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
}

// 关闭声明
if (ps != null) {
try {
ps.close();
} catch (SQLException e) {
e.printStackTrace();
}
}

// 关闭链接对象
if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}

}