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){}
}

}