begin.java

教材订购系统

package program;

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

import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JTextField;
import java.awt.Rectangle;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

import javax.swing.JButton;
import javax.swing.JLabel;

public class Begin extends JFrame {

	private static final long serialVersionUID = 1L;
	
	private JFrame frame = null;

	private JPanel jContentPane = null;

	private JButton jButton = null;

	private JLabel jLabel = null;
	


	/**
	 * This method initializes jButton	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getJButton() {
		if (jButton == null) {
			jButton = new JButton();
			jButton.setBounds(new Rectangle(101, 110, 77, 30));
			jButton.setText("确定");
			jButton.addActionListener(new java.awt.event.ActionListener() {
				public void actionPerformed(java.awt.event.ActionEvent e) {
					try {
						Begin2 be = new Begin2();
					} catch (IOException e1) {
						// TODO Auto-generated catch block
						e1.printStackTrace();
					}
					frame.setVisible(false);
				}	
			});
		}
		return jButton;
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		SwingUtilities.invokeLater(new Runnable() {
			public void run() {
				Begin thisClass = new Begin();
				thisClass.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
				thisClass.setVisible(true);
			}
		});
	}

	/**
	 * This is the default constructor
	 */
	public Begin() {
		super();
		frame = this;
		initialize();
	}

	/**
	 * This method initializes this
	 * 
	 * @return void
	 */
	private void initialize() {
		this.setSize(300, 200);
		this.setContentPane(getJContentPane());
		this.setTitle("欢迎界面");
		
		this.setResizable(false); //锁定JFrame
		Toolkit tkit = Toolkit.getDefaultToolkit();
        Dimension screenSize = tkit.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);
		
		this.setVisible(true);
		frame.addWindowListener(new java.awt.event.WindowAdapter() {
			public void windowClosing(java.awt.event.WindowEvent e) {
				System.exit(0);
			}
		});
	}

	/**
	 * This method initializes jContentPane
	 * 
	 * @return javax.swing.JPanel
	 */
	private JPanel getJContentPane() {
		if (jContentPane == null) {
			jLabel = new JLabel();
			jLabel.setBounds(new Rectangle(35, 24, 219, 67));
			jLabel.setText("     欢迎使用我们的教材销售系统~_ ~");
			jContentPane = new JPanel();
			jContentPane.setLayout(null);
			jContentPane.add(getJButton(), null);
			jContentPane.add(jLabel, null);
		}
		return jContentPane;
	}

}  //  @jve:decl-index=0:visual-constraint="239,33"