JPanel作为容器，显示不同的视图

 

private JPanel m_topInputContainer = null;

private void changeOrderPanelVisibility(String v) {  // remove both top and bottom input container  // create both top and bottom input panel according to visibility  m_topInputContainer.removeAll();  m_topInputContainer.add(createPartOrderPanel(v, "top"));  m_topInputContainer.validate();  m_topInputContainer.repaint();

  if (hasBottomPanel()) {   m_bottomInputContainer.removeAll();   m_bottomInputContainer.add(createPartOrderPanel(v, "bottom"));   m_bottomInputContainer.validate();   m_bottomInputContainer.repaint();  }

 }