private void ulozActionPerformed(java.awt.event.ActionEvent evt) {
        final JFileChooser fc = new JFileChooser();
        int returnVal = fc.showSaveDialog(this);
        if (returnVal == JFileChooser.APPROVE_OPTION) {
            m1.ulozSoubor(fc.getSelectedFile().getAbsolutePath(),this);
        }
    }