FreeCodeCamp/HelpFrontEnd

@voiddemon
Can anyone please help me with the below code

import java.sql.*;

public class Vogellatest2 {

        Connection c = null;
        Statement s = null;
        ResultSet r = null;

        public void readDataBase()  {
            try {
                Class.forName("com.mysql.jdbc.Driver");
                c = DriverManager
                        .getConnection("jdbc:mysql://localhost/employees" + "user=sameerboppana & password = space");
                s = c.createStatement();
                r = s.executeQuery("Select * from salaries where salary > 155500");
                writeResultSet(r);
            } catch (Exception e) {
                //throw e;
            } finally {
                close();

            }
        }

        private void writeMetaData(ResultSet r) throws SQLException {

            System.out.println("The columns in the table are: ");

            System.out.println("Table: " + r.getMetaData().getTableName(1));
            for (int i = 1; i <= r.getMetaData().getColumnCount(); i++) {
                System.out.println("Column " + i + " " + r.getMetaData().getColumnName(i));
            }
        }

        private void writeResultSet(ResultSet resultSet) throws SQLException {
            // ResultSet is initially before the first data set
            while (resultSet.next()) {
                // It is possible to get the columns via name
                // also possible to get the columns via the column number
                // which starts at 1
                // e.g. resultSet.getSTring(2);
                System.out.print(resultSet.getString(1) + " ");
                System.out.println(resultSet.getString("salary" + " "));

            }
        }

        private void close() {
            try {
                if (r != null) {
                    r.close();
                }

                if (s != null) {
                    s.close();
                }

                if (c != null) {
                    c.close();
                }
            } catch (Exception e) {

            }
            public static void main (String args[]) {    
///i'm getting an error here saying  void is an invalid type for main

                new Vogellatest2().readDataBase();
            }
        }

    }

i'm getting an error saying void is an invalid type for main