仅实现借阅 增删图书 功能 public class Main { public static void main(String args[]){ EventQueue.invokeLater(new Runnable() { public void run() { try { UIManager.setLookAndFeel(new org.jvnet.substance.skin.SubstanceOfficeBlue2007LookAndFeel()); JFrame.setDefaultLookAndFeelDecorated(t
