helpframe.java

用java编写的人事管理系统,很好的 学习下吧

/**
 * 源文件：HelpFrame.java
 * 作用：系统帮助文档
 */
package mypro;

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

public class HelpFrame extends JFrame implements ActionListener
{
	private JList txtHelp;
	private JButton btnSure;
	private JScrollPane helpPanel;
	private JPanel southPanel;
	private Vector vv;
	public HelpFrame()
	{
		
		txtHelp=new JList();
		helpPanel=new JScrollPane();
		southPanel=new JPanel();
		btnSure=new JButton("确定");
		
		btnSure.addActionListener(this);
		
		Container me=this.getContentPane();
		me.add(helpPanel,BorderLayout.CENTER);
		me.add(southPanel,BorderLayout.SOUTH);
		southPanel.add(btnSure);
		helpPanel.getViewport().add(txtHelp);
		vv=readTxt();
		txtHelp.setListData(vv);
		
		this.setTitle("帮助文档");
	  	this.setSize(480,380);
	  	this.setLocationRelativeTo(this);
	  	this.setResizable(false);
	  	this.setVisible(true);	
	}
	public void actionPerformed(ActionEvent bae)
	{
		this.dispose();
	}
	/*读入文本文件内容*/
	public Vector readTxt()
	{
		Vector ve= new Vector();
		try
		{
			File file = new File("..\\S1GraduationDevice\\帮助文挡\\help.txt");
			if(!file.exists())
			{
				file.createNewFile();
			}
			FileReader fr = new FileReader(file);
			BufferedReader br = new BufferedReader(fr);
			String str;
			while((str=br.readLine())!=null)
			{
				ve.add(str);
			}
			br.close();
			fr.close();
		}
		catch(FileNotFoundException fe)
		{
			JOptionPane.showMessageDialog(null,"无此文件","错误",JOptionPane.ERROR_MESSAGE);
		}
		catch(IOException ie)
		{
			JOptionPane.showMessageDialog(null,"文件读取有错","错误",JOptionPane.ERROR_MESSAGE);
		}
		return(ve);
	}
}