ClientDAO.java

package sec06;

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

public class ClientDAO {

    private Connection conn;

    public ClientDAO() throws Exception {
        conn = DBConnect.getConnection();
    }

    public boolean login(int clientNo, String password) {

        String sql = "SELECT * FROM CLIENT WHERE CLIENTNO=? AND CLIENTPASSWORD=?";

        try {
            PreparedStatement pstmt = conn.prepareStatement(sql);
            pstmt.setInt(1, clientNo);
            pstmt.setString(2, password);

            ResultSet rs = pstmt.executeQuery();

            if(rs.next()) return true;

        } catch(Exception e) {
            e.printStackTrace();
        }

        return false;
    }
}