这样,
我想要上下滚动条,它死活给我显示左右滚动条
pResult = new JPanel(); JScrollPane pane = new JScrollPane(pResult); //改成有滚动条的
pane.setPreferredSize(new Dimension(pane.getWidth() - 50, pane.getHeight()/2));
初始化JScrollPane之后加段这个代码
pane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);本回答被提问者和网友采纳