Can not access the public schema

Hi,

I had installed postgresql-8.1.9, But when I tried to run any sql statement like the following:

(1)select * from <TableName>;

        or

(2)select * from public.<TableName>;

 

 on the query tool to access any table inside the public schema I got the following error:

thought I am logging in with a superuser account.

 

-The second part of the problem is that I wrote a JDBC code to access any table inside the public schema and I got the same errors.And the following are the lines of code I wrote:

 

Class.forName("org.postgresql.Driver");
   Connection connection = DriverManager.getConnection("jdbc:postgresql://localhost/<DataBaseName>?user=user&password=password");   
   System.out.println("connection>>>>>>>>>>>>> "+connection);
   Statement statement=connection.createStatement();   
   ResultSet resultSet=statement.executeQuery("select * from public.<TableName>");

//or

//select * from <TableName>   
            while(resultSet.next()){
             System.out.println(resultSet.getString(1));
            }
  } catch (ClassNotFoundException e) {
   e.printStackTrace();
  } catch (SQLException e) {
   e.printStackTrace();
  } 

 

-I ensured that I have a connection to the DataBase by printing the connection to the console as you see.And the connection object was printed.

 

-Please advice.

 

Thanks,

Mohamed.