Oracle Seeker, Oracle探索者

public class TestDate {
	public static void main(String[] args) {
		Connection connection = null;
		try {
			Class.forName("oracle.jdbc.driver.OracleDriver");
			try {
 
				connection = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","exthosf","exthosf");
				PreparedStatement ps=connection.prepareStatement("SELECT sysdate FROM dual");
			    ResultSet rs=ps.executeQuery();
			    while(rs.next())
			    System.out.println(rs.getObject(1));	
			} catch (SQLException e) {
				e.printStackTrace();
			}
 
			if (connection != null) {
				System.out.println("取得连接 :)");
			} else {
				System.out.println("无法取得数据库连接！");
			}
 
		} catch (ClassNotFoundException e) {
			System.out.println("无法找到数据库连接驱动！");
			e.printStackTrace();
 
		} finally {
			try {
				// 检查连接是否为空，如果不为空则关闭
				if (connection != null) {
					connection.close();
				}
			} catch (SQLException e) {
				System.out.println("关闭连接时发生错误");
			}
		}
 
	}
}