Question

所以我需要创建一个可以在文本字段中读入用户输入的Java程序。我能够设置文本字段数组，但读入输入并将数据存储在新数组中让我非常困扰。我为按钮做了一个监听器，我只需要弄清楚如何将输入textField数组的信息存储到等级数组中，这样我就可以对等级进行计算。我是这个网站的新手，非常感谢帮助

//an Array for test scores and one to hold the input grades
  JTextField[] testScores;
  double[] grade;

/**
    Constructor
*/

public StatisticsCalculator()
{
    //Display a Title
    setTitle("JP Stearns");

    //Specify the action for the Close button
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    //Create a Border Layout
    setLayout(new BorderLayout());

    //Create the Custom Panels
    buildScoresPanel();
    buildStatisticsPanel();

    //Build the Button Panel
    buildButtonPanel();

    //Add the Components to the content pane
    add(scoresPanel, BorderLayout.NORTH);
    add(statisticsPanel, BorderLayout.CENTER);
    add(buttonPanel, BorderLayout.SOUTH);

    //Pack the contents of the Window to display it.
    pack();
    setVisible(true);
}

    //Create a GridLayout manger
    //with 1 row 4 columns.
    scoresPanel.setLayout(new GridLayout(1,4));

    //Create 4 text fields using an array
    testScores = new JTextField[4];

    for (int index = 0; index < testScores.length; index++)
        {
            testScores[index] = new JTextField(4);
            scoresPanel.add(testScores[index]);
        }

    //Border the panel
    scoresPanel.setBorder(BorderFactory.createTitledBorder("Test Scores"));

private void buildScoresPanel()
{
    //Create a panel for the test scores
    scoresPanel = new JPanel();

    //Create a GridLayout manger
    //with 1 row 4 columns.
    scoresPanel.setLayout(new GridLayout(1,4));

    //Create 4 text fields using an array
    testScores = new JTextField[4];

    for (int index = 0; index < testScores.length; index++)
        {
            testScores[index] = new JTextField(4);
            scoresPanel.add(testScores[index]);
        }

    //Border the panel.v
    scoresPanel.setBorder(BorderFactory.createTitledBorder("Test Scores"));
}

Answer 1

我认为需要更多信息，但看起来你可以做到像这样的东西（伪代码）：

 JButton button = new JButton("This is L");
  button.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent e) { 

          for(int i=0; i<testScores.length(); i++)
                grade[i]=Double.parseDouble(testScores[i].getText());
                 //then do calculations like grade[i] * 100%
             }

读取一组文本字段

1 个答案: