java - JTable 更改 BoxLayout 上其他组件的位置

Question

我的问题是，当我将 JTable 添加到面板时，所有其他组件都会移动到右侧约面板长度的 20%，代码是:

JFrame frame = new JFrame("my frame");

JPanel panel = new JPanel();
BoxLayout layout = new BoxLayout(panel, BoxLayout.PAGE_AXIS);
panel.setLayout(layout);

JButton but1 = new JButton("button1");
but1.setAligmentX(0);
panel.add(but1);

String[] columnNames = {"kolumna 1", "kol 2", "kol3"};
JTable itemTable = new JTable(new DefaultTableModel(columnNames, 10));
panel.add(new JScrollPane(itemTable));

JButton but2 = new JButton("button2");
but2.setAligmentX(0);
panel.add(but2);

frame.setContentPane(panel);
frame.setVisible(true);

结果是

    button1
TABLEEEEEEE
TABLEEEEEEE
TABLEEEEEEE
TABLEEEEEEE
    button2

而不是

button1
TABLEEEEEE
TABLEEEEEE
TABLEEEEEE
TABLEEEEEE
button2

我做错了什么？

/编辑

我检查了 JTextArea 没问题，但 JScrollPane 和 JTable 导致了这个问题，使用带有 .setAligment(0) 方法的按钮但结果相同

Answer 1

试试这个代码

    JButton b1 = new JButton("button1");
    String[] columnNames = { "kolumna 1", "kol 2", "kol3" };
    JTable itemTable = new JTable(new DefaultTableModel(columnNames, 10));
    JScrollPane scrollPane = new JScrollPane(itemTable);

    JButton b2 = new JButton("button2");

    b1.setAlignmentX(Component.LEFT_ALIGNMENT);
    scrollPane.setAlignmentX(Component.LEFT_ALIGNMENT);
    b2.setAlignmentX(Component.LEFT_ALIGNMENT);

    JPanel panel = new JPanel();
    BoxLayout layout = new BoxLayout(panel, BoxLayout.Y_AXIS);
    panel.setLayout(layout);

    panel.add(b1);
    panel.add(scrollPane);
    panel.add(b2);

这里有更多信息:java BoxLayout panel's alignment