Java Swing實戰（三）文本組件JTextField和密碼組件JPasswordField

接下來添加文本組件JTextField和密碼組件JPasswordField。

/**
 * @author: lishuai
 * @date: 2018/11/26 13:51
 */
public class WeimingSyncApplets {
    public static void main(String[] args) {
        // 面板組件
        JPanel taskPanel = new JPanel();
        JPanel dbPanel = new JPanel();
        JTabbedPane tabbedPane = buildJTabbedPane(taskPanel, dbPanel);
        buildFrame(tabbedPane);
    }

    private static JTabbedPane buildJTabbedPane(JPanel taskPanel, JPanel dbPanel) {
        // 選項卡面板
        JTabbedPane tabbedPane = new JTabbedPane();
        // 經過BorderFactory來設置邊框的特性
        tabbedPane.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
        tabbedPane.add("執行任務", taskPanel);
        tabbedPane.add("數據源配置", dbPanel);

        // 下拉框
        dbPanel.add(buildJLabel("數據庫類型", 10, 20, 80, 25));
        String dbs[] = {"mysql", "oracle", "sqlserver"};
        dbPanel.add(buildJComboBox("mysql", "mysql", dbs, 0, 100, 20, 165, 25));

        // 文本框
        dbPanel.add(buildJLabel("用戶名", 10, 50, 80, 25));
        JTextField dbUserName = buildJTextField("dbUserName", "dbUserName", 20, 100, 50, 165, 25);
        dbPanel.add(dbUserName);

        // 密碼
        dbPanel.add(buildJLabel("密碼", 10, 80, 80, 25));
        JPasswordField dbPassWord = buildJPasswordField("dbPassWord", "dbPassWord", 20, 100, 80, 165, 25);
        dbPanel.add(dbPassWord);

        return tabbedPane;
    }

    private static JPasswordField buildJPasswordField(String defaultValue, String name, int columns, int x, int y, int width, int height) {
        JPasswordField jPasswordField = new JPasswordField(columns);
        jPasswordField.setText(defaultValue);
        jPasswordField.setName(name);
        jPasswordField.setBounds(x, y, width, height);
        return jPasswordField;
    }

    private static JTextField buildJTextField(String defaultValue, String name, int columns, int x, int y, int width, int height) {
        JTextField text = new JTextField(columns);
        text.setText(defaultValue);
        text.setName(name);
        text.setBounds(x, y, width, height);
        return text;
    }

    private static JComboBox buildJComboBox(Object selectedItem, String name, String[] elements, int selectedIndex, int x, int y, int width, int height) {
        DefaultComboBoxModel codeTypeModel = new DefaultComboBoxModel();
        // elements 下拉框中的選項
        for (String element : elements) {
            codeTypeModel.addElement(element);
        }
        JComboBox codeTypeBox = new JComboBox(codeTypeModel);
        codeTypeBox.setName(name);
        // 默認選中的下拉框選項
        codeTypeBox.setSelectedItem(selectedItem);
//        codeTypeBox.setSelectedItem(selectedIndex);
        codeTypeBox.setBounds(x, y, width, height);
        // 添加下拉框事件監聽器
        codeTypeBox.addItemListener(new ItemListener() {
            @Override
            public void itemStateChanged(ItemEvent e) {
                if (e.getStateChange() == ItemEvent.SELECTED) {
                    // 選擇的下拉框選項
                    System.out.println(e.getItem());
                }
            }
        });
        return codeTypeBox;
    }

    private static JLabel buildJLabel(String name, int x, int y, int width, int height) {
        JLabel label = new JLabel(name);
        label.setBounds(x, y, width, height);
        return label;
    }

    private static void buildFrame(JComponent component) {
        // 窗體容器
        JFrame frame = new JFrame("數據同步工具");
        frame.add(component);
        //  JFrame.EXIT_ON_CLOSE  退出
        //  JFrame.HIDE_ON_CLOSE  最小化隱藏
        frame.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
        // 設置佈局
        frame.getContentPane().setLayout(new BorderLayout());
        frame.getContentPane().add(BorderLayout.CENTER, component);
        // 設置窗口最小尺寸
        frame.setMinimumSize(new Dimension(1060, 560));
        // 調整此窗口的大小，以適合其子組件的首選大小和佈局
        frame.pack();
        // 設置窗口相對於指定組件的位置
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
        // 設置窗口尺寸是否固定不變
        frame.setResizable(true);
    }

}

效果如圖：