photo.java

Java大作业+学生成绩管理系统,采用access数据库连接。

//图形统计框架
//package grade;


import javax.swing.*;

import java.awt.*;
import java.awt.event.*;

public class Photo {

	/**
	 * @param args
	 */
	//定义科目
	public static String sub = "网络工程";
	//定义主框架
	private JFrame frame = new JFrame("分数段图形统计");
	//定义标签
	private JLabel JLcourse = new JLabel("科目");
	private JLabel JLnum = new JLabel("人数");
//	private JLabel JL1 = new JLabel();
//	private JLabel JL2 = new JLabel();
//	private JLabel JL3 = new JLabel();
//	private JLabel JL4 = new JLabel();
//	private JLabel JL5 = new JLabel();
	//定义下拉列表
	private String course[] = {"网络工程","操作系统","编译原理","软件工程","专业英语"};
	private JComboBox JCBsubject = new JComboBox(course);
	//定义面板
	private Container con = frame.getContentPane();
	private JPanel panel = new JPanel();
//	private JPanel panelph = new JPanel();
//	private panelGraphics panelph = new panelGraphics();
	private Pane panelph = new Pane();
	//	定义数据库操作对象
	private DataManager manager = new DataManager();
	
	
	//构造函数
	public Photo(){
		
		//框架大小
		frame.setSize(400, 400);
		frame.setLocation(200,200);
		frame.setVisible(true);
		frame.setDefaultCloseOperation(frame.DISPOSE_ON_CLOSE);
		
		//把下拉列表加入面板
		panel.setLayout(new FlowLayout());
		panel.add(JLcourse);
		panel.add(JCBsubject);
		
		//设置显示图形的面板
		panelph.setSize(300, 300);
		
		//设置主面板
		con.setLayout(new BorderLayout());
		con.add(panel,BorderLayout.NORTH);
		con.add(panelph,BorderLayout.CENTER);
		
		//增加监听器
		JCBsubject.addActionListener(new ActionListener(){

			public void actionPerformed(ActionEvent arg0) {
				// TODO 自动生成方法存根
				sub = (String)JCBsubject.getSelectedItem();
				panelph.repaint();
			}});
	}
	
	
		
	
//}
	public static void main(String[] args) {
		// TODO 自动生成方法存根
		
		Photo a = new Photo();
	}

}