无法在swing中水平显示2 JTable

Question

我需要显示沿x轴的2JTable。我能够垂直显示它们(Y轴)。这是迄今为止我所做的：

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但是我想显示如下的表格，

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这是我的代码：

    tableA = new JTable(data, colNames);
    tableB = new JTable(data, colNames);

    JLabel labelA = new JLabel("Table-A");
    JLabel labelB = new JLabel("Table-B");

    JButton bt_copy = new JButton("Copy");

    Container c = frame.getContentPane();

    c.setLayout(new BoxLayout(c, BoxLayout.Y_AXIS));

    c.add(labelA);
    c.add(tableA.getTableHeader());
    c.add(tableA);

    c.add(labelB);
    c.add(tableB.getTableHeader());
    c.add(tableB);

    c.add(bt_copy);

当我把c.setLayout(new BoxLayout(c, BoxLayout.Y_AXIS));中的Y轴改为X轴时。我的GUI视图真的很糟糕。

Answer 1

就像这样?？

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JTable leftTable = new JTable();
JTable rightTable = new JTable();

addButton = new JButton("Add >>");
removeButton = new JButton("<< Remove");

setLayout(new GridBagLayout());

// Prepare the buttons panel...
JPanel pnlActions = new JPanel(new GridBagLayout());
pnlActions.setBorder(new LineBorder(Color.RED));
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 1;
gbc.anchor = GridBagConstraints.SOUTH;
gbc.weighty = 1;
gbc.fill = GridBagConstraints.HORIZONTAL;
pnlActions.add(addButton, gbc);
gbc.weighty = 0;
gbc.gridy++;
pnlActions.add(removeButton, gbc);

// Prepare the main layout
gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 0.33;
gbc.fill = GridBagConstraints.BOTH;
gbc.weighty = 1;

add(new JScrollPane(leftTable), gbc);
gbc.gridx = 2;
add(new JScrollPane(rightTable), gbc);

gbc.gridx = 1;
gbc.gridy++;
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.weighty = 0;
add(pnlActions, gbc);

Answer 2

我建议使用GridBagLayout而不是BoxLayout。与其将所有内容添加到JFrame本身，不如尝试将JPanel添加到框架中并将表添加到框架中。(这意味着您将将面板的布局设置为GridBagLayout)。

如果您是布局管理器新手，请尝试阅读布局管理器视觉指南。这是相当丰富的信息。

Answer 3

尝试为contentPane使用一个Box。您将需要使用组合框来获得所需的布局。下面是一个应该能让您接近的例子：

tableA = new JTable(data, colNames);
tableB = new JTable(data, colNames);

JLabel labelA = new JLabel("Table-A");
JLabel labelB = new JLabel("Table-B");

JButton bt_copy = new JButton("Copy");

Box v = Box.createVerticalBox();
frame.setContentPane(v);

Box c = Box.createHorizontalBox();
v.add(c);

JScrollPane jsp = new JScrollPane(tableA);
c.add(jsp);

jsp = new JScrollPane(tableB);
c.add(jsp);

Box c2 = Box.createHorizontalBox();
c2.add(Box.createHorizontalGlue());
c2.add(bt_copy);
c2.createHorizontalGlue();

v.add(c2);