public class PostgreSQLJDBC {
    public static void main(String args[]) {
        System.out.println("looking for db connection");
        Connection c = null;
        try {
            Class.forName("org.postgresql.Driver");
            c = DriverManager //139.59.175.170 eller 127.0.0.1/32

                    .getConnection("jdbc:postgresql://178.62.33.183:5432/steinar");
        } catch (SQLException e) {
            System.out.print("sql exception thrown ");
            e.printStackTrace();
            System.err.println(e.getClass().getName()+": "+e.getMessage());
            System.exit(0);
        }
        catch (ClassNotFoundException e){
            e.printStackTrace();
        }
        System.out.println("Opened database successfully");
    }
}

FATAL: no pg_hba.conf entry for host "ip", user "user", database "db",

Connection to 178.62.33.183:5432 refused.
Check that the hostname and port are
correct and that the postmaster is
accepting TCP/IP connections.

# IPv4 local connections:
host    all             myUserName         myIp            trust

psql: could not connect to server: No such file or directory
    Is the server running locally and accepting
    connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?