java - 收到预期错误并且不知道为什么

Question

我正在尝试调用void方法addToList，该方法将通过用户传递给它的两个字符串除外。我检查了dataSource类，以确保它确实接受了那些作为参数。问题是我在该方法调用上始终收到标识符>预期错误，但我不知道为什么。我已经使用数据源调用了其他方法，并且没有遇到类似的问题。

public class JListFromFile extends JFrame {

  private TextField wordA;
  private TextField wordB;
  private JButton openButton;
  private JButton newButton;
  private JButton addButton;
  private JButton deleteButton;
  private JButton saveButton;
  private TextField output;
  private JList listFromFile;
  private JPanel listPanel;
  private JPanel textPanel;
  private JPanel inputPanel;
  private JPanel buttonsPanel;
  private DataSource2 dataSource;
  private WordPair wordPair;
  public JListFromFile ()
  {
    // create the object to provide the data
    dataSource = new DataSource2();
    .
    .
    .
   private class AddButtonListener implements ActionListener
  {
    public void actionPerformed (ActionEvent event)
    {
      listFromFile.setListData(new Object[0]);

      wordA.setEnabled(true);
      wordB.setEnabled(true);

      String inputStringA = wordA.getText();
      String inputStringB = wordB.getText();

      //here is the problem
      dataSource.addToList.(inputStringA, inputStringB);



    }
  }

Answer 1

addToList后出现点符号

dataSource.addToList.(inputStringA, inputStringB);

                    ^_______ see the dot symbol.