Swing GridBagLayout - 对齐问题

Question

我有一个带有 JLabel、JTextField 的 JPanel 和另一个带有 JLabel 的 JPanel。

    createDomainPanel = new JPanel(new GridBagLayout());
    GridBagConstraints gbc = new GridBagConstraints();
    //createDomainPanel.setSize(600, 300);
    gbc.fill=GridBagConstraints.HORIZONTAL;


    gbc.gridx=0;
    gbc.gridy=0;
    createDomainPanel.add(new JLabel("Enter the name of the domain"), gbc);

    gbc.gridx=0;
    gbc.gridy=1;        
    createDomainPanel.add(domainName, gbc);

    JPanel result = new JPanel(new FlowLayout());
    result.add(successMessage);
    gbc.anchor=GridBagConstraints.LAST_LINE_START;
    gbc.gridx=0;
    gbc.gridy=2;
    createDomainPanel.add(result);

最后的JLabel 结果在某个操作后打印成功消息。

 public void actionPerformed(ActionEvent e) {
        SimpleDbConnect dbc = new SimpleDbConnect();
        String name = "";
        if (e.getSource()==domainName){
            name=e.getActionCommand();
            boolean success = dbc.addDomain(name);
            if (success){
                successMessage.setText("Domain "+ name + " added successfully");
            }
        }

    }

但是问题是，当我确实获得成功响应时，成功消息并没有出现在底部，而是出现在第一个 JLabel 的右侧。我对 Swings 很陌生。谁能帮帮我？

Answer 1

您在添加 results 面板时忘记传递约束条件

createDomainPanel.add(result, gbc);

Swing GridBagLayout - 对齐问题

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