真正的JDBC java代码

下面为真正考虑比较全面的JDBC java代码。觉得好的，请帮忙顶下。

 import java.sql.*;
public class JDBC {
    public static void main(String[] args) {
        Connection conn = null;
        Statement state = null;
        ResultSet rs = null;
        try {
            Class.forName("oracle.jdbc.driver.OracleDriver");
            conn = DriverManager.getConnection(
                    "jdbc:oracle:thin:192.168.3.111:icss", "scott", "tiger");
            state = conn.createStatement();
            rs = state.executeQuery("select * from table1");
            while (rs.next()) {
                System.out.println(rs.getString("deptno"));
            }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            try {
                if (rs != null) {
                    rs.close();
                    rs = null;
                }
                if (state != null) {
                    state.close();
                }
                if (conn != null) {
                    conn.close();
                    conn = null;
                }
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}