//Paste this thing in class Employee
public static void loadFromDB(){

		String jdbcUrl = "jdbc:postgresql://localhost/postgres";
		String username = "postgres";
		String password = "postgres";

		Connection conn = null;
		Statement stmt = null;
		ResultSet rs = null;


		try
		{
			conn = DriverManager.getConnection(jdbcUrl, username, password);
			stmt = conn.createStatement();
			rs = stmt.executeQuery("select id,first_name,last_name, year_of_birth,title,monthly_salary from employees"+
									" where  id not in (select emp_id from managers)"+
									" and	 id not in (select emp_id from developers)");
			while (rs.next())
			{
				Employee employee = new Employee(rs.getInt("id"),rs.getString("first_name"),rs.getString("last_name"),rs.getInt("year_of_birth"),rs.getString("title"),rs.getFloat("monthly_salary"));

				ResultSet rs1 = null;
				rs1 = conn.createStatement().executeQuery("select emp_id,language from emp_languages where emp_id=" + employee.getId());
				while (rs1.next())
				{
					employee.addLanguage(rs1.getString("language"));
				}
				employees.put(employee.getFullName(), employee);
				System.out.println(employee.toString() + employee.getLanguages().toString());
			}
		} catch (SQLException e)
		{
			e.printStackTrace();
		}
		finally
		{
			try {
				if (stmt != null) {
					stmt.close();
				}
				if (rs != null) {
					rs.close();
				}
				if (conn != null) {
					conn.close();
				}
			} catch (Exception e) {
				e.printStackTrace();
			}
		}


	}