loginapp.java

商品销售管理系统工程代码

package logininterface;

import java.awt.Toolkit;
import java.awt.Dimension;

public class LoginApp {
  public LoginApp() {
    //创建窗口类
    LoginFrame frame = new LoginFrame();
    //分别取得屏幕和窗口的大小
    Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
    Dimension frameSize = frame.getSize();
    //使窗口居中对齐
    frame.setLocation( (screenSize.width - frameSize.width) / 2,
                      (screenSize.height - frameSize.height) / 2);
    //显示窗口
    frame.setVisible(true);
  }
  public static void main(String[] args) {
    new LoginApp();
  }
}