新手问一个简单问题啊,请大家赐教

Question

假设我现在有一个jtable如下:
编号   姓名         省份     城市
1      datalover    湖北     武汉
2      sunlover     云南     昆明
问题:现在我要编辑这个表的城市属性,如果是 湖北 则在城市里面显示下拉列项为:
 麻城
 红安
 黄州
 黄梅如果是云南则显示的是
 红河
 玉溪
 思茅
 曲靖
等请问我要怎么去实现  城市这一列的 celleditor

Answer 1

加个城市表
Tab_City
------------
CityID
CityName
省份

Answer 2

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.DefaultCellEditor;
import javax.swing.JFrame;
import javax.swing.JComboBox;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;public class tabletest implements ActionListener{
JComboBox jcb1=null;
JComboBox jcb2=null;
String[] s={"湖北","云南"};
String[][] ss={{"麻城","红安","武汉"},{"昆明","红河","玉溪"}};
tabletest(){

    String[] header={"省份","城市"};
    jcb2=new   JComboBox();
    jcb1=new JComboBox(s);
    jcb1.addActionListener(this);
    String[][] data={{"",""},{"",""}};
DefaultTableModel dtm=new DefaultTableModel(data,header);
JTable jt=new JTable(dtm);
jt.getColumnModel().getColumn(0).setCellEditor(new   DefaultCellEditor(jcb1));
jt.getColumnModel().getColumn(1).setCellEditor(new   DefaultCellEditor(jcb2));
JScrollPane sp=new JScrollPane(jt);
JFrame f=new JFrame();
f.getContentPane().add(sp);
f.setSize(300,300);
f.setVisible(true);
}
public static void main(String[] args) {

new tabletest();
}
public void actionPerformed(ActionEvent e) {
if(e.getSource()==jcb1){
jcb2.removeAllItems();
    int len=jcb1.getSelectedIndex();
     System.out.println(len);
    for(int i=0;i<ss[len].length;i++)
    {jcb2.addItem(ss[len][i]);
    System.out.println(ss[len][i]);
    }
}
}}

Answer 3

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.DefaultCellEditor;
import javax.swing.JFrame;
import javax.swing.JComboBox;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;public class tabletest implements ActionListener{
JComboBox jcb1=null;
JComboBox jcb2=null;
String[] s={"湖北","云南"};
String[][] ss={{"麻城","红安","武汉"},{"昆明","红河","玉溪"}};
tabletest(){

    String[] header={"省份","城市"};
    jcb2=new   JComboBox();
    jcb1=new JComboBox(s);
    jcb1.addActionListener(this);
    String[][] data={{"",""},{"",""}};
DefaultTableModel dtm=new DefaultTableModel(data,header);
JTable jt=new JTable(dtm);
jt.getColumnModel().getColumn(0).setCellEditor(new   DefaultCellEditor(jcb1));
jt.getColumnModel().getColumn(1).setCellEditor(new   DefaultCellEditor(jcb2));
JScrollPane sp=new JScrollPane(jt);
JFrame f=new JFrame();
f.getContentPane().add(sp);
f.setSize(300,300);
f.setVisible(true);
}
public static void main(String[] args) {

new tabletest();
}
public void actionPerformed(ActionEvent e) {
if(e.getSource()==jcb1){
jcb2.removeAllItems();
    int len=jcb1.getSelectedIndex();
     System.out.println(len);
    for(int i=0;i<ss[len].length;i++)
    {jcb2.addItem(ss[len][i]);
    System.out.println(ss[len][i]);
    }
}
}}