Question

我的问题是，当我将JTable添加到面板时，所有其他组件都移动到右侧约20％的面板长度，代码为：

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是否正常，但是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

试试这段代码

    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);

此处有更多信息：java BoxLayout panel's alignment

JTable改变BoxLayout上其他组件的位置

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