public class JDBC {
    public static void main(String[] args) {
        //1.註冊驅動器
        Class.forName(oracle.jdbc.driver.OracleDriver);

        //2.得到Connection
        Connection conn = DriverManager.getConnection();
        try {
            //3.建立Statement
            Statement stmt = conn.createStatement();

            //4.得到結果集
 

            ResultSet rs = stmt.executeQuery("Select * from t_student");

            //5.對結果集進行處理(例如遍歷t_student表中的sname欄位)
            while(rs.next()) {
                System.out.println(rs.getString("sname"));
            }
        catch(SQLException e) {
            e.printStackTrace();
        }

        //6.資源釋放
 

        if(rs != null) {
            try {
                rs.close();
                rs = null;
            } catch(SQLException e) {
                e.printStackTrace();
            }
        }

        if(stmt != null) {
            try {
                stmt.close();
                stmt = null
 
;
            } catch(SQLException e) {
                e.printStackTrace();
            }
        }

        if(conn != null) {
            try {
                conn.close();
                conn = null;
            } catch(SQLException e) {
                e.printStackTrace();
            }
        }
    }
}