java - 运行 jar 文件时 JList 控件大小发生变化

Question

我有两个并排的 JList 控件。它们之间几乎没有按钮。当我从 eclipse 运行时，布局看起来不错。

但是如果我运行导出的jar文件，左侧会占用更多空间。我不知道为什么要这样做。

我将它们放置在像这样的 GridBagLayout 中。

mLstMdlTestSuitesAvailable = new DefaultListModel<String>();
mLstTestSuitesAvailable = new JList<String>();
mLstTestSuitesAvailable.setModel(mLstMdlTestSuitesAvailable);
mLstTestSuitesAvailable.setMinimumSize(new Dimension(100, 100));
JScrollPane scrollPaneTestSuitesAvailable = new JScrollPane(mLstTestSuitesAvailable);
GridBagConstraints gbcLstTestSuitesAvailable = new GridBagConstraints();
gbcLstTestSuitesAvailable.fill = GridBagConstraints.BOTH;
gbcLstTestSuitesAvailable.weightx = 10;
gbcLstTestSuitesAvailable.gridwidth = 10;
gbcLstTestSuitesAvailable.weighty = 8;
gbcLstTestSuitesAvailable.gridheight = 8;
gbcLstTestSuitesAvailable.insets = new Insets(0, 11, 10, 11);
gbcLstTestSuitesAvailable.gridx = 0;
gbcLstTestSuitesAvailable.gridy = 1;
panel.add(scrollPaneTestSuitesAvailable, gbcLstTestSuitesAvailable);

mLstMdlTestSuitesSelected = new DefaultListModel<String>();
mLstTestSuitesSelected = new JList<String>();
mLstTestSuitesSelected.setModel(mLstMdlTestSuitesSelected);
GridBagConstraints gbcLstTestSuitesSelected = new GridBagConstraints();
gbcLstTestSuitesSelected.fill = GridBagConstraints.BOTH;
gbcLstTestSuitesSelected.weightx = 10;
gbcLstTestSuitesSelected.gridwidth = 10;
gbcLstTestSuitesSelected.weighty = 8;
gbcLstTestSuitesSelected.gridheight = 8;
gbcLstTestSuitesSelected.insets = new Insets(0, 11, 10, 11);
gbcLstTestSuitesSelected.gridx = 15;
gbcLstTestSuitesSelected.gridy = 1;
JScrollPane scrollPaneTestSuitesSelected = new JScrollPane(mLstTestSuitesSelected);
panel.add(scrollPaneTestSuitesSelected, gbcLstTestSuitesSelected);

谁能帮我弄清楚这里出了什么问题吗？

Answer 1

如图here对于 JTable，您可以重写列表的 getPreferredScrollableViewportSize() 方法来指定初始的首选大小。使用 getRowHeight() 的倍数可以提供漂亮的外观。