java – 创建联系人列表程序

我正在使用Java Swing在eclipse中编写联系人列表应用程序.
如何获得仅包含列和行的简单表格布局？
我不想要行或列标签.

像这样的东西：

first name: john
middle name: franklin
last name: doe

名称可编辑的文本框等.

什么是最好的组件？

我还会在文本字段下面有按钮.
目前我有一个正确运行的JFrame.它拉出一个窗口,我的菜单选项正确.但是当我尝试这样做时：

myFrame.setLayout(new GridLayout(6,2)); 

我收到一个错误.我想有一个两列五行(可能是6)的网格布局.
我想在左栏上有一个标签,在右栏上有一个文本框.
然后在底部的两个按钮,居中.

最佳答案

您最好将字段和控件(按钮)分成单独的面板,这样您就可以为每个面板提供不同的布局管理器.

我将使用BorderLayout从基础JPanel开始.

在此,我将在CENTER位置添加“fields”面板,在SOUTH位置添加控件(按钮).

对于字段,我使用GridBagLayout,但我很挑剔,对于控件面板我可能会使用FlowLayout(除非你有权访问一个漂亮的ButtonLayout管理器;))

这意味着你最终会得到类似的东西

更新代码示例

public class FormPanel extends JPanel {

    private JTextField fldFirstName;
    private JTextField fldMiddleName;
    private JTextField fldLastName;
    private JTextField fldDateOfBirth;
    private JTextField fldEMail;
    private JButton okButton;
    private JButton cancelButton;

    public FormPanel() {

        setLayout(new BorderLayout());
        add(createFieldsPane());
        add(createButtonsPane(),BorderLayout.soUTH);

    }

    public JPanel createButtonsPane() {

        JPanel panel = new JPanel(new FlowLayout());
        panel.add((okButton = createButton("Ok")));
        panel.add((cancelButton = createButton("Cancel")));

        return panel;

    }

    protected JButton createButton(String text) {

        return new JButton(text);

    }

    public JPanel createFieldsPane() {

        JPanel panel = new JPanel(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.insets = new Insets(2,2,2);
        gbc.gridx = 0;
        gbc.gridy = 0;
        gbc.anchor = GridBagConstraints.WEST;

        panel.add(createLabel("First Name:"),gbc);
        gbc.gridy++;
        panel.add(createLabel("Middle Name:"),gbc);
        gbc.gridy++;
        panel.add(createLabel("Last Name:"),gbc);
        gbc.gridy++;
        panel.add(createLabel("Date of Birth:"),gbc);
        gbc.gridy++;
        panel.add(createLabel("EMail:"),gbc);

        gbc.gridy = 0;
        gbc.gridx++;
        gbc.weightx = 1;
        panel.add((fldFirstName = createField()),gbc);
        gbc.gridy++;
        panel.add((fldLastName = createField()),gbc);
        gbc.gridy++;
        panel.add((fldMiddleName = createField()),gbc);
        gbc.gridy++;
        panel.add((fldDateOfBirth = createField()),gbc);
        gbc.gridy++;
        panel.add((fldEMail = createField()),gbc);

        JPanel filler = new JPanel();
        filler.setopaque(false);

        gbc.gridy++;
        gbc.weightx = 1;
        gbc.weighty = 1;
        panel.add(filler,gbc);

        return panel;

    }

    protected JLabel createLabel(String text) {

        return new JLabel(text);

    }

    protected JTextField createField() {

        JTextField field = new JTextField(12);
        return field;

    }

}

原文地址：https://www.jb51.cc/java/438175.html