syspoint.java

教材订购系统

package program;

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

import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.BoxLayout;
import java.awt.CardLayout;
import java.awt.GridBagLayout;
import javax.swing.JLabel;
import java.awt.Rectangle;
import javax.swing.JButton;

public class SysPoint extends JFrame {

	private static final long serialVersionUID = 1L;

	private JFrame frame = null;

	private JPanel jPanel = null;

	private JLabel jLabel = null;

	private JButton jButton = null;
	/**
	 * This is the default constructor
	 */
	public SysPoint(String e_inf) {
		super();
		
		frame = this;
		initialize(e_inf);
	}

	/**
	 * This method initializes this
	 * 
	 * @return void
	 */
	private void initialize(String einf) {
		this.setSize(300, 200);
		this.setContentPane(getJPanel(einf));
		this.setTitle("信息提示");
		frame.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)/3, 
        		           (screenSize.height-frameSize.height)/3);
		
		frame.setVisible(true);
		frame.addWindowListener(new java.awt.event.WindowAdapter() {
			public void windowClosing(java.awt.event.WindowEvent e) {
				System.exit(0);
			}
		});
	}

	/**
	 * This method initializes jPanel	
	 * 	
	 * @return javax.swing.JPanel	
	 */
	private JPanel getJPanel(String e) {
	   
		if (jPanel == null) {
			jLabel = new JLabel();
			jLabel.setText(e);
			jLabel.setBounds(new Rectangle(27, 39, 232, 61));
			jPanel = new JPanel();
			jPanel.setLayout(null);
			jPanel.add(jLabel, null);
			jPanel.add(getJButton(), null);
		}
		return jPanel;
	}

	/**
	 * This method initializes jButton	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getJButton() {
		if (jButton == null) {
			jButton = new JButton();
			jButton.setBounds(new Rectangle(99, 121, 76, 31));
			jButton.setText("确定");
			jButton.addActionListener(new java.awt.event.ActionListener() {
				public void actionPerformed(java.awt.event.ActionEvent e) {
					frame.setVisible(false);
				}
			});
		}
		return jButton;
	}

}  //  @jve:decl-index=0:visual-constraint="226,27"