checklesson.java

关于学生成绩管理系统的,是比较好的.估计适合比较多的学校的

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

class checklesson extends JFrame implements ActionListener{
	private String elesson[]=new String[200];
	private int x;
	private int y;
	public JComboBox clesson;
	public JButton jok3=new JButton("查询");
	public JButton cancle=new JButton("返回");
	
	checklesson(){
		access aso=new access();
		int n=aso.requir("lessonname","lesson",elesson);
		clesson=new JComboBox(elesson);
		aso.close();
		
		JPanel p2=new JPanel(new BorderLayout());
		JPanel pan=new JPanel(new GridLayout(0,5));
		p2.setBackground(Color.pink);
		pan.setBackground(Color.pink);
		
		p2.add(pan,BorderLayout.CENTER);
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		pan.add(clesson);
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		pan.add(jok3);
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		pan.add(cancle);
		pan.add(new JLabel(" "));
		pan.add(new JLabel(" "));
		
		getContentPane().setLayout(new BorderLayout());
		getContentPane().add(new JLabel("查询课程信息",SwingConstants.CENTER),
		BorderLayout.NORTH);
		
		getContentPane().add(p2,BorderLayout.CENTER);
		
		jok3.addActionListener(this);
		clesson.addActionListener(this);
		cancle.addActionListener(this);
	}
	
	public void actionPerformed(ActionEvent e){
		if(jok3==e.getSource()){
			
			slesson p=new slesson(elesson[clesson.getSelectedIndex()]);
			p.setSize(350,300);
			p.setTitle("课程信息");
			Dimension screenSize=Toolkit.getDefaultToolkit().getScreenSize();
			int screenWidth=screenSize.width;
			int screenHeight=screenSize.height;
			x=(screenWidth-p.getWidth())/2;
			y=(screenHeight-p.getWidth())/2;
			p.setLocation(x,y);
			p.setVisible(true);
			}
		else if(cancle==e.getSource()){
			this.dispose();
			}
		}
}