也许您没有正确地将 JTable 添加到屏幕?您可以尝试一个简单的测试:

Maybe you are not adding the JTable to the screen properly? You can try a simple test:

JFrame frame = new JFrame();
frame.setExtendedState(Frame.MAXIMIZED_BOTH);
frame.setContentPane(transTable);
frame.setVisible(true);

如果 getTransactions() 确实返回行 - 您将能够看到它们(没有列标题，因为它们未在您的代码中定义).

If indeed getTransactions() return rows - you will be able to see them (without column headers as they are not defined in your code).