dalej.addMouseListener(new MouseAdapter() {
	    	@Override
	    	public void mouseClicked(MouseEvent arg) {
	    		Connection c = null;
	    	      try {
	    	         Class.forName("org.postgresql.Driver");
	    	         c = DriverManager
	    	            .getConnection("jdbc:postgresql://localhost:5432/aszewczak",
	    	            "aszewczak", "123");
	    	         c.setAutoCommit(false);


	    	         PreparedStatement st = c.prepareStatement("INSERT INTO uzytkownik (data_urodzenia, miasto, wzrost, pensja, plec ) VALUES (?, ?, ?, ?, ?)");
	    	         st.setObject(1, Date.valueOf(data.getText()));
	    	         st.setString(2, miasto.getText());
	    	         st.setInt(3, Integer.parseInt(wzrost.getText()));
	    	         st.setFloat(4, Float.parseFloat(pensja.getText()));
	    	         st.setString(5, plec.getText());
	    	         st.executeUpdate();
	    	         st.close();
	    	         c.commit();
	    	         c.close();

	    	         info.setText("DODANE!");
	    	      } catch (Exception e) {
	    	         System.err.println( e.getClass().getName()+": "+ e.getMessage() );
	    	         System.exit(0);
	    	      }
	    	}
		});