基于c/s的网吧计费系统的设计与实现

				package com.jbaptech.accp.netbar.client;
				
				import java.awt.*;
				import javax.swing.UIManager;
				
				public class MainApplication {
				
				
				  boolean packFrame = false;
				
				//Construct the application
				 public MainApplication() {
				  NetBarFeeMangementFrame frame = new NetBarFeeMangementFrame();
				  //Validate frames that have preset sizes
				  //Pack frames that have useful preferred size info, e.g. from their layout
				  if (packFrame) {
				    frame.pack();
				  }
				  else {
				    frame.validate();
				  }
				  //Center the window
				  Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
				  Dimension frameSize = frame.getSize();
				  if (frameSize.height > screenSize.height) {
				    frameSize.height = screenSize.height;
				  }
				  if (frameSize.width > screenSize.width) {
				    frameSize.width = screenSize.width;
				  }
				  frame.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2);
				  frame.setVisible(true);
				}
				//Main method
				public static void main(String[] args) {
				  try {
				    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
				  }
				  catch(Exception e) {
				    e.printStackTrace();
				  }
				  new MainApplication();
				}
				
				}