新手问一个关于DefaultTableModel中addrow问题

[Furay2333]

package chap6;


import java.awt.BorderLayout;

import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.List;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Scanner;
import java.util.Vector;

import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.DefaultTableModel;





class Person implements Serializable{
	private static final long serialVersionUID=1L;
	private String name;
	private String phoneNumber;
	public String getNmae(){
		return name;
	}
	public String getPhoneNumber(){
		return phoneNumber;
	}
	public Person(String name,String phoneNumber){
		this.name=name;
		this.phoneNumber=phoneNumber;
	}
}
class PersonCollection{
	private Collection<Person>collection=null;
	public PersonCollection(){
		load();
	}
	public void add(Person person){
		collection.add(person);
	}
	public Person find(String name){
		Iterator<Person>iter=collection.iterator();
		while(iter.hasNext()){
			Person p=iter.next();
			if(name.equals(p.getNmae()))
				return p;
		}
		return null;
	}
	public boolean del(String name){
		Iterator<Person>iter=collection.iterator();
		while(iter.hasNext()){
			Person p=iter.next();
			if(name.equals(p.getNmae())){
				collection.remove(p);
				return true;
			}
		}
		return false;
	}
	public Collection<Person>personCollection(){
		return collection;
	}
	public void load(){
		File myFile=new File("data.dat");
		if(myFile.exists()){//exists是判断文件是否存在
			try{
				ObjectInputStream si=new ObjectInputStream(new FileInputStream(myFile));
				this.collection=(Collection<Person>)si.readObject();
				si.close();
			}catch(Exception e){
				e.printStackTrace();
			}
		}else{
			collection=new HashSet<Person>();
		}
	}
	public void save(){
		try{
			ObjectOutputStream so=new ObjectOutputStream(new FileOutputStream("data.dat"));
			so.writeObject(this.collection);
			so.close();
		}catch(IOException e){
			e.printStackTrace();
		}
	}
}
public class Contact3 extends JFrame implements ActionListener{
	private Vector<Vector<String>> rowData;
	private Vector<String> columnName;
	JTextField jtext1;
	JTextField jtext2;
	JButton jb1;
	JButton jb2;
	JTabbedPane p;
	JTable table;
//	List list;
	static String str="";
	static DefaultTableModel dtm ;
	JScrollPane scrollPanel;
	JPanel panel1;
	static String [][] alist=new String[1][2];
	static Vector<String> v = new Vector<String>();
	static PersonCollection persons=new PersonCollection();
	static Scanner reader=new Scanner(System.in);
//	ArrayList<String> list=new ArrayList<String>();
	String [][]data=new String[0][1];
	public final String[] COLUMN_NAMES=new String[]{"姓名","电话号码"};
	public Contact3(){
		jb1=new JButton("添加");
		jb2=new JButton("退出");
		jb1.addActionListener(this);
		jb2.addActionListener(this);
		JLabel jl1=new JLabel("姓名");
		JLabel jl2=new JLabel("手机号码");
		dtm=new DefaultTableModel(data,COLUMN_NAMES);

		
		jtext1=new JTextField("");
		jtext2=new JTextField("");
		
		
		table=new JTable(dtm);
		scrollPanel = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
				JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
		
		p=new JTabbedPane(JTabbedPane.TOP);
		p.setBackground(Color.white);
		panel1 = new JPanel(); 
		JPanel a=new JPanel()	; 
		JPanel b=new JPanel(); 
		JPanel c=new JPanel(); 
		JPanel panel2 = new JPanel();
		JPanel d=new JPanel();
		JPanel panel3 = new JPanel();
		p.add(panel1,"添加" );
		p.add(panel2,"浏览" );
		p.add(panel3,"查询" );

		
		GridLayout myGridLayout=new GridLayout();
		Container w1Container = this.getContentPane();

		panel1.setLayout(new GridLayout(4,3));
		a.setLayout(new GridLayout(1,2));
		b.setLayout(new GridLayout(1,2));
		c.setLayout(new FlowLayout());

		
		a.add(jl1);
		a.add(jtext1);
		b.add(jl2);
		b.add(jtext2);
		c.add(jb1);
		c.add(jb2);
		
		panel1.add(a);
		panel1.add(b);
		panel1.add(c);
		panel2.add(scrollPanel);
		w1Container.add(p);
		this.setSize(500,500);
		this.setTitle("通讯录");
		this.setVisible(true);
		
	}
	
	public static void add(String name,String phonenumber){
		alist[0][0]=name.toString();
		alist[0][1]=phonenumber.toString();
		v.addElement(alist[0][0]);
		v.addElement(alist[0][1]);
		dtm.addRow(v);
		dtm.getColumnCount();
		persons.add(new Person(name,phonenumber));

	}
	public void actionPerformed(ActionEvent e) {
		JButton button=(JButton)e.getSource();
		if(button==jb1){
			if(jtext1.getText().trim().equals("") && jtext2.getText().trim().equals("")){
				JTextField jtext3=new JTextField("姓名电话为空!!");
				jtext3.setBounds(150,270,100,30);
				jtext3.setEditable(false);
				panel1.add(jtext3);
				
			}
			else{
				String name=jtext1.getText();
				String phonenumber=jtext2.getText();
				add(name,phonenumber);
			}
		
		}
		
		else{
			System.exit(0);
		}
		jtext1.setText("");
		jtext2.setText("");
		alist[0][0]=null;
		alist[0][1]=null;
	}
	public static void main(String[] args) {
		Contact3 c=new Contact3();
		
	}
	

}

为什么我添加从第二个号码开始往后都是显示的第一个号码？？
求大神指点小弟什么地方写错了！谢谢

[rayw0ng]

185 行的 vector 必须是 new 一个新的，不要用 static。

[awusoft]

alist[0][0]=name.toString();
		alist[0][1]=phonenumber.toString();
		v.addElement(alist[0][0]);
		v.addElement(alist[0][1]);
		dtm.addRow(v);

你这里,v中的值已经有了很多了,但是加入到行的时候,只会取前面两个.也就是第一次的两个值,可以将v定义来本地的对象

alist[0][0]=name.toString();
		alist[0][1]=phonenumber.toString();
		Vector<String> v=new Vector<String>();
		v.addElement(alist[0][0]);
		v.addElement(alist[0][1]);
		dtm.addRow(v);
		dtm.getColumnCount();
		persons.add(new Person(name,phonenumber));

而且你这里的alist[0][0]=name.toString(); alist[0][1]=phonenumber.toString(); 改的永远是同一个对像,就是说alist中只有一个数据,最新的那个