import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.IOException;


public class Lb extends JFrame implements ActionListener{
    JButton b1 = new JButton("open");
    JButton b2 = new JButton("save");
    JPanel p = new JPanel();
    JTextArea jta = new JTextArea();
    JScrollPane jsp = new JScrollPane(jta);
    
    JFileChooser jfc = new JFileChooser();
    
    public Lb() {
        this.add(jsp);
        this.add(p,BorderLayout.NORTH);
        p.add(b1);
        p.add(b2);
        
        b1.addActionListener(this);
        b2.addActionListener(this);
        
        this.setSize(320,240);
        this.setDefaultCloseOperation(EXIT_ON_CLOSE);
        this.setVisible(true);
    }
    
    public void actionPerformed(ActionEvent e){
        String s = e.getActionCommand();
        if(s.equals("save")){
            save();
        }else if(s.equals("open")){
            open();
        }
    }
    
    public void open(){
        int n = jfc.showOpenDialog(this);
        String s,text="";
        
        if(n==0){
            File f = jfc.getSelectedFile();
    
            try{
                FileReader fr = new FileReader(f);
                BufferedReader br = new BufferedReader(fr);
                
                while((s=br.readLine())!=null){
                    text+=s+"\n";
                }
                
                jta.setText(text);
                
                br.close();
                fr.close();
            }catch(FileNotFoundException e){
                e.printStackTrace();
            }catch(IOException e){
                e.printStackTrace();
            }
        }else {
            JOptionPane.showMessageDialog(this,"choose a file please.","系统提示",JOptionPane.INFORMATION_MESSAGE);
        }
    }
    
    public void save(){
        if(jfc.showSaveDialog(this)==JFileChooser.APPROVE_OPTION){
            File f = jfc.getSelectedFile();
    
            try{
                FileWriter fr = new FileWriter(f);
                
                fr.write(jta.getText().replaceAll("\n","\r\n"));
                
                fr.close();
            }catch(FileNotFoundException e){
                e.printStackTrace();
            }catch(IOException e){
                e.printStackTrace();
            }
        }else{
            JOptionPane.showMessageDialog(this,"choose a file please.");
        }
    }
        
    public static void main(String[] args) {
        new Lb();
    }
}

------解决方案--------------------
这个应该对了!~~不好意思!~
Java code
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.sql.*;
import com.microsoft.jdbc.sqlserver.SQLServerDriver;

public class Phone{
    
    public static void main(String[] args) {
        new Dis();
    }
}

class Dis extends JFrame implements ActionListener{
    JTable t;
    JScrollPane js;
    JButton b = new JButton("添加");
    JPanel p = new JPanel();
    String[] dp = {"编号","姓名","性别","生日","电话","住址"};
    String[][] dc;
    
    public Dis(){
        this.setTitle("通讯录");
        this.setLocation(200,200);
        this.add(p,BorderLayout.SOUTH);
        p.add(b);
        b.addActionListener(this);
        open();        
    }
    
    public void actionPerformed(ActionEvent e){
        new Add(this);
    }
    
    public void open(){
        try{
            Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
            Connection con = DriverManager.getConnection(
                "jdbc:microsoft:sqlserver://localhost:1433;databasename=Ph",
                "sa",
                "");
            Statement sta = con.createStatement(1005,1008);
            String sql = "select * from Tph";
            ResultSet res = sta.executeQuery(sql);            
            res.last();
            int n = res.getRow();
            dc = new String[n][6];            
            res.first();
            for(int i=0;i<n;i++){
                for(int j=0;j<6;j++){
                    dc[i][j]=res.getString(j+1);
                }
                res.next();
            }            
            res.close();
            sta.close();            
            t = new JTable(dc,dp);
            js = new JScrollPane(t);            
            this.add(js);
            this.setSize(480,360);
            this.setDefaultCloseOperation(3);
            this.setVisible(true);
        }catch(ClassNotFoundException e){
            e.printStackTrace();
        }catch(SQLException e){
            e.printStackTrace();
        }
    }
}

class Add extends JFrame implements ActionListener{
    JPanel[] p = new JPanel[6];
    JLabel[] l = new JLabel[5];
    JTextField[] f = new JTextField[5]; 
    String[] s ={"姓名:","性别:","生日:","电话:","住址:"};    
    JPanel p1 = new JPanel(new GridLayout(6,1));
    JButton b1 = new JButton("确定");
    JButton b2 = new JButton("取消");
    Dis z;
        
    public Add(Dis z){
        this.z=z;
        this.setTitle("添加朋友");
        this.setLocation(200,100);
        this.add(p1);
        b1.addActionListener(this);
        b2.addActionListener(this);
        for(int i=0;i<6;i++){
            p[i] = new JPanel();
            p1.add(p[i]);
        }
        for(int i=0;i<5;i++){
            l[i]=new JLabel(s[i]);
            f[i]=new JTextField(10);
        }
        for(int i=0;i<5;i++){
            p[i].add(l[i]);
            p[i].add(f[i]);
        }
        p[5].add(b1);
        p[5].add(b2);            
        this.setSize(400,600);
        this.setDefaultCloseOperation(EXIT_ON_CLOSE);
        this.setVisible(true);
    }
    
    public void actionPerformed(ActionEvent e){
        Object obj = e.getSource();
        if(obj==b1){
            tj();
            this.dispose();
        }else if(obj==b2){
            this.dispose();
        }
    }
    
    public void tj(){
           try{
            Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
            Connection con = DriverManager.getConnection(
                "jdbc:microsoft:sqlserver://localhost:1433;databasename=Ph",
                "sa",
                "");
            Statement sta = con.createStatement(1005,1008);
            String s1 = f[0].getText();
            String s2 = f[1].getText();
            String s3 = f[2].getText();
            String s4 = f[3].getText();
            String s5 = f[4].getText();
            String sql = "insert into Tph(sname,ssex,sbr,sph,sds) values('"+s1+"','"+s2+"','"+s3+"','"+s4+"','"+s5+"')";
            sta.executeUpdate(sql);
            sta.close();            
            z.remove(z.js);
            z.open();
        }catch(ClassNotFoundException ex){
            ex.printStackTrace();
        }catch(SQLException ex){
            ex.printStackTrace();
        }
    }
}