atm.java

这个系统的功能是模拟ATM机的登陆、查询余额、取款、更改密码等功能

/****************************************
 * <p>Title: ATM自动取款机</p>
 *
 * <p>Description: 模拟</p>
 *
 * <p>Copyright: Copyright (c) 2006</p>
 *
 * <p>Company: </p>
 *
 *
 * @author vinky_sc
 * @version 1.0
 ******************************************/


import java.awt.Toolkit;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import java.awt.Dimension;

/*****************************************
 *整个程序的开始
 *
 *主要是实例化登陆窗口
 *****************************************/

public class ATM {
    boolean packFrame = false;	
    /**
     * Construct and show the application.
     */
    public ATM() {
        atmScreen frame = new atmScreen();//创建一个atmScreen的对象，同时实例化窗口
        // 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
        //设置窗口显示在银幕的中央位置
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        Dimension frameSize = frame.getSize();
        //如果窗口的高度(宽度)大于银幕的高度(宽度)，就将窗口的高度(宽度)设置为银幕的高度(宽度)
        if (frameSize.height > screenSize.height) {
            frameSize.height = screenSize.height;
        }
        if (frameSize.width > screenSize.width) {
            frameSize.width = screenSize.width;
        }
        //设置窗口左上角的坐标X、Y。
        frame.setLocation((screenSize.width - frameSize.width) / 2,
                          (screenSize.height - frameSize.height) / 2);
        frame.setVisible(true);//设置窗口可见
    }

    /**
     * Application entry point.
     *
     * @param args String[]
     */
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.
                                             getSystemLookAndFeelClassName());
                } catch (Exception exception) {
                    exception.printStackTrace();
                }

                new ATM();//调用构造函数
            }
        });
    }
}