transparenterne - Objektorienteret programmering i Java

import java.sql.*;
import java.util.*;
public class Databaseforbindelse
{ private Connection forb;
private Statement stmt;
public Databaseforbindelse() throws Exception
{ Class.forName("oracle.jdbc.driver.OracleDriver");
Connection forb = DriverManager.getConnection(
"jdbc:oracle:thin:@oracle.cv.ihk.dk:1521:student",
"stuk1001","hemli’");
stmt = forb.createStatement();
}
public void sletAlleData() throws SQLException
{ stmt.execute("truncate table KUNDER");
}
public void opretTestdata() throws SQLException
{
try { // hvis tabellen allerede eksisterer opstår der en
// SQL−udtagelse
stmt.executeUpdate(
"create table KUNDER (NAVN varchar(32), KREDIT float)" );
} catch (SQLException e) {
System.out.println("Kunne ikke oprette tabel: "+e);
}
stmt.executeUpdate(
"insert into KUNDER values(’Jacob’, −1799)");
stmt.executeUpdate("insert into KUNDER values(’Brian’, 0)");
}
public void indsæt(Kunde k) throws SQLException
{ stmt.executeUpdate(
"insert into KUNDER values(
’" + k.navn + "’, " + k.kredit + ")");
}