private void save() {
    try {
      VMOptions.writeXmx(Integer.parseInt(myHeapSizeField.getText()));
    } catch (NumberFormatException ignored) {
    }

    try {
      VMOptions.writeMaxPermGen(Integer.parseInt(myPermGenSizeField.getText()));
    } catch (NumberFormatException ignored) {
    }

    try {
      VMOptions.writeCodeCache(Integer.parseInt(myCodeCacheSizeField.getText()));
    } catch (NumberFormatException ignored) {
    }
  }