请问大神图片所示这个是什么原因

部分代码：

    setupComponent(new JLabel("合同价格："), 0, 0, 1, 1, false);
    heTongJiaGe = new JTextField();
    setupComponent(heTongJiaGe, 1, 0, 2, 1, true);

    setupComponent(new JLabel("核定价格："), 3, 0, 1, 1, false);
    heDingJiaGe = new JTextField();
    setupComponent(heDingJiaGe, 4, 0, 2, 1, true);

    setupComponent(new JLabel("房屋面积："), 0, 1, 1, 1, false);
    mianJi = new JTextField();
    setupComponent(mianJi, 1, 1, 2, 1, true);

    setupComponent(new JLabel("房屋年限："), 3, 1, 1, 1, false);
    nianXian = new JTextField();
    setupComponent(mianJi, 4, 1, 2, 1, true);


    private void setupComponent(JComponent component, int gridx, int gridy,
        int gridwidth, int ipadx, boolean fill) {
    final GridBagConstraints gridBagConstrains = new GridBagConstraints();
    gridBagConstrains.gridx = gridx;
    gridBagConstrains.gridy = gridy;
    gridBagConstrains.insets = new Insets(5, 1, 3, 1); //指定一个容器在它上、左、下、右边界上四个空白宽度
    if (gridwidth > 0)
        gridBagConstrains.gridwidth = gridwidth;
    if (ipadx > 1)
        gridBagConstrains.ipadx = ipadx;
    if (fill)
        gridBagConstrains.fill = GridBagConstraints.HORIZONTAL; 
    add(component, gridBagConstrains);
}

求指教

很明显是外层容器大小的问题