Connection error using import java.sql.*;

Question

I have a very strange error. See the code below:
import java.sql.*;
import java.lang.*;
class a7 {
public static void main(String args[]) {
String kolom,ko = new String();
String db = "devarbn1";
String url = "jdbc:odbc:"+db;
String login = "arbor";
String password = "arbor123";
String driver = "sun.jdbc.odbc.JdbcOdbcDriver";
String BasisQuery = "select COLUMN_NAME " +
" from all_tab_columns " +
" where table_name = ? ";
System.out.println("Database: " + db);
Connection con;
try { 
Class.forName(driver);
} catch (java.lang.ClassNotFoundException e) {
System.err.print("ClassNotFoundException: ");
System.err.println(e.getMessage());
try {
con = DriverManager.getConnection(url,login,password); //this line gives an error!!!
and so on.....
This is a fragment of the whole program. All of a sudden I cannot compile it anymore using jdk1.3 or jdk 1.4 (I never had compiling problems before with this program)
It gives the following error message: incompatible types, found Connection.
I haven't got a clue what went wrong. I have a lot of other java files in which a connection is involved. I cannot compile any of them anymore. Even reinstalling jdk1.4 or 1.3 doesn't help. Can anyone please help me?
Thanx, debeumers

Answer 1

Yes, the whole message is:
incompatible types found : java.sql.Connection required : Connection.
The whole code is (it is from a different java file then the code I used before)
import javax.sql.*;
import java.sql.*;
import java.lang.*;
public class Connection {
static final String arb_nl = "arbornl";
static final String arb_fr = "arborfr";
static final String clar_nl = "clarnl";
static final String clar_fr = "clarfr";
static final String po = "pcnlpp";
static final String user_clar_nl = "report";
static final String pass_clar_nl = " r3p0rt";
static final String user_clar_fr = "report";
static final String pass_clar_fr = " r3p0rt";
static final String user_arb_fr = "report";
static final String pass_arb_fr = " r3p0rt";
static final String user_arb_nl = "report";
static final String pass_arb_nl = " r3p0rt";
static final String user_po_nl = "report";
static final String pass_po_nl = "r3p0rt";
static boolean a = true;
static boolean b = true;
static boolean c = true;
static Connection conarb,conclar,conpo;
static String driver = "sun.jdbc.odbc.JdbcOdbcDriver";
String loginarb = user_arb_nl;
String passwordarb = pass_arb_nl;
String loginclar = user_clar_nl;
String loginpo = user_po_nl;
String passwordpo = pass_po_nl;
String passwordclar = pass_clar_nl;
public Connection() {
public void makeConnection(String database,String user,String password,String type) {
String url = "jdbc:odbc:" + database;
try { 
Class.forName(driver);
} catch (java.lang.ClassNotFoundException ex) {
System.err.print("ClassNotFoundException: ");
System.err.println(ex.getMessage());
a = false;
try { if (type=="ARB")  { conarb = DriverManager.getConnection(url,user,password);} //giving the problem!!
if (type=="CLAR") { conclar = DriverManager.getConnection(url,user,password);} //giving the problem!!
} catch(SQLException ex) {
System.err.println("SQLException: " + ex.getMessage());
b = false;
/* try { if (type=="PO") {conpo = DriverManager.getConnection(url,user,password);}
} catch(SQLException ex) {System.err.println("SQLException: " + ex.getMessage()); c = false;}*/
I hope you can help..
Thanks...debeumers