一个小型的图书管理系统

				import java.awt.*;
				import java.awt.event.*;
				import javax.swing.*;
				public class Xinxi{
					JFrame frame;
					JLabel label1,label2;
					JButton  backbutton;
					public static void main(String args[]){
					  Xinxi xx=new Xinxi();
						xx.go();
					}
					public void go(){
						label1=new JLabel("版权：彭锦超");
						label2=new JLabel("创作时间：2008,7");
						frame=new JFrame("系统信息");
						Container xxcontentpane=frame.getContentPane();
						
						backbutton=new JButton("返回");
				       backbutton.addActionListener(new ActionListener() {
							public void actionPerformed(ActionEvent e) {
								Zhujiemian zjm=new Zhujiemian();
						 	    zjm.go();
						 	    frame.setVisible(false);
						  }
						  }); 
				
					JPanel p1=new JPanel();
					p1.setLayout(new GridLayout(2,1));
					p1.add(label1);
					p1.add(label2);
					 xxcontentpane.add(p1,BorderLayout.NORTH);
					 xxcontentpane.add(backbutton,BorderLayout.SOUTH);
						frame.setSize(500,450);
						frame.setVisible(true);
					}
				}