java 通讯录

package 通讯录;

public class Example10_21 {
	public static void main(String args[]){
		new CommFrame();
	}
}

package 通讯录;
import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class CommFrame extends JFrame implements ActionListener{
	File file=null;
	JMenuBar bar;
	JMenu fileMenu;
	JMenuItem inputMenuItem,showMenuItem;
	JTextArea show;
	InputArea inputMessage;
	CardLayout card=null;
	JPanel pCenter;
	CommFrame(){
		file =new File("C:\\Users\\Administrator.XB-201509101154\\Desktop","通讯录.txt");
		inputMenuItem=new JMenuItem("录入");
		showMenuItem=new JMenuItem("显示");
		bar = new JMenuBar();
		fileMenu=new JMenu("菜单");
		fileMenu.add(inputMenuItem);
		fileMenu.add(showMenuItem);
		bar.add(fileMenu);
		setJMenuBar(bar);
		inputMenuItem.addActionListener(this);
		showMenuItem.addActionListener(this);
		inputMessage=new InputArea(file);
		show=new JTextArea(12,20);
		card=new CardLayout();
		pCenter=new JPanel();
		pCenter.setLayout(card);
		pCenter.add("inputMenuItem",inputMessage);
		pCenter.add("showMenuItem",show);
		add(pCenter,BorderLayout.CENTER);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setVisible(true);
		setBounds(100,50,420,380);
		validate();
	}
	public void actionPerformed(ActionEvent e){
		if(e.getSource()==inputMenuItem)
			card.show(pCenter, "inputMenuItem");
		else if(e.getSource()==showMenuItem){
			int number=1;
			show.setText(null);
			card.show(pCenter, "showMenuItem");
			try{
				RandomAccessFile in=new RandomAccessFile(file,"r");
				String name=null;
				while((name=in.readUTF())!=null){
					show.append("\n"+number+" "+name);
					show.append("\t "+in.readUTF());
					show.append("\t"+in.readUTF());
					show.append("\n - - - - - - - - - - - - - - - - - - - -");
					number++;
				}
				in.close();
			}
			catch(Exception ee){}
		}
	}

}

package 通讯录;
import java.io.*;

import javax.swing.*;

import java.awt.Color;
import java.awt.Color.*;
import java.awt.event.*;
public class InputArea extends JPanel implements ActionListener{
	File f=null;
	RandomAccessFile out;
	Box baseBox,boxV1,boxV2;
	JTextField name,email,phone;
	JButton button;
	InputArea(File f){
		setBackground(Color.cyan);
		this.f=f;
		name=new JTextField(12);
		email=new JTextField(12);
		phone=new JTextField(12);
		button=new JButton("录入");
		button.addActionListener(this);
		boxV1=Box.createVerticalBox();
		boxV1.add(new JLabel("输入姓名"));
		boxV1.add(Box.createVerticalStrut(8));
		boxV1.add(new JLabel("输入email"));
		boxV1.add(Box.createVerticalStrut(8));
		boxV1.add(new JLabel("输入电话"));
		boxV1.add(Box.createVerticalStrut(8));
		boxV1.add(new JLabel("单击录入"));
		boxV2=Box.createVerticalBox();
		boxV2.add(name);
		boxV2.add(Box.createVerticalStrut(8));
		boxV2.add(email);
		boxV2.add(Box.createVerticalStrut(8));
		boxV2.add(phone);
		boxV2.add(Box.createVerticalStrut(8));
		boxV2.add(button);
		baseBox=Box.createHorizontalBox();
		baseBox.add(boxV1);
		baseBox.add(Box.createHorizontalStrut(10));
		baseBox.add(boxV2);
		add(baseBox);
	}
	public void actionPerformed(ActionEvent e){
		try{
			RandomAccessFile out=new RandomAccessFile(f,"rw");
			if(f.exists()){
				long length=f.length();
				out.seek(length);
			}
			out.writeUTF("姓名:"+name.getText());
			out.writeUTF("email:"+email.getText());
			out.writeUTF("电话:"+phone.getText());
			out.close();
		}
		catch(IOException ee){}
	}

}