printscore.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 PrintScore extends JFrame implements ActionListener{
	
	protected JButton jok3=new JButton("打印");	
	protected String elesson[]=new String[200];
	protected int x;
	protected int y;
	protected JButton cancle=new JButton("返回");
	protected String eclass[]={"网络工程","计算机技术",
	"软件工程","信管","金融","英语","电子商务","国际经济与贸易"
	};
	protected JComboBox clesson;
	protected JComboBox cclass;
	protected JPanel checkpanel=new JPanel();
	
	
	public PrintScore(){
		checkpanel.setBackground(Color.pink);
		access aso=new access();
		int n=aso.requir("lessonname","lesson",elesson);
		clesson=new JComboBox(elesson);
		cclass=new JComboBox(eclass);
		aso.close();
		
		getContentPane().setLayout(new BorderLayout());
		getContentPane().add(new JLabel("打印成绩",SwingConstants.CENTER),
		BorderLayout.NORTH);
		
		
		JPanel checkpanel2=new JPanel();
		JPanel jokpanel=new JPanel();
		checkpanel2.setBackground(Color.pink);
		jokpanel.setBackground(Color.pink);
		
		jokpanel.add(jok3);
		jokpanel.add(cancle);
		checkpanel.setLayout(new GridLayout(0,1));
		checkpanel.add(new JLabel("请输入查询的课程"));
		checkpanel.add(clesson);
		checkpanel.add(new JLabel("请输入要查询的专业"));
		checkpanel.add(cclass);
		
		checkpanel2.setLayout(new BorderLayout());
		checkpanel2.add(checkpanel,BorderLayout.NORTH);
		
		getContentPane().add(checkpanel2,BorderLayout.CENTER);
		getContentPane().add(jokpanel,BorderLayout.SOUTH);
		this.setBackground(Color.pink);
		
		jok3.addActionListener(this);
		clesson.addActionListener(this);
		cclass.addActionListener(this);
		cancle.addActionListener(this);
	}
	
	public void actionPerformed(ActionEvent e){
		if(jok3==e.getSource()){
			Print p=new Print(elesson[clesson.getSelectedIndex()],
			eclass[cclass.getSelectedIndex()]);
			p.setSize(350,400);
			p.setTitle(elesson[clesson.getSelectedIndex()]+"成绩单");
			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();
		}
	}
}