Trouble !!

Hi there

The following error ocurred:
# java -cp /usr/share/pgsql/jdbc7.1-1.2.jar:. pgConnect
Something unusual has occured to cause the driver to fail. Please report
this exception: java.lang.NullPointerException
        at org.postgresql.Driver.connect(Driver.java:125)
        at java.sql.DriverManager.getConnection(DriverManager.java:517)
        at java.sql.DriverManager.getConnection(DriverManager.java:177)
        at pgConnect.connect(pgConnect.java:29)
        at pgConnect.main(pgConnect.java:42)
-------------------
My java is:
# java -version
java version "1.3.1_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1_01)
Java HotSpot(TM) Client VM (build 1.3.1_01, mixed mode)
--------------------
My code looks like:

public class pgConnect {

    private String driver="org.postgresql.Driver";
    /** Creates new pgConnect */
    public pgConnect() throws Exception {

    }

    public pgConnect(String drv) throws Exception {
        driver=drv;
    }

    public Connection connect(String url,String usr,String passwd)
throws Exception {
        if(driver!=null) {
            Class.forName(driver);
        }
        Connection con= DriverManager.getConnection(url, usr, passwd);
        return con;
    }

    public void disconnect(Connection con) throws SQLException {
        con.close();
    }

    public static void main(String[] args) {
      try {
      String url="jdbc:postgresql://localhost:5432:/ebtacdb";
      String user="axel";
      pgConnect pc=new pgConnect();
      pc.connect(url,user,"");
      }
      catch(Exception e)  {
          e.printStackTrace();
      }
    }

}
####

Do you have any idea ?

Thanks 4 help

Axel