/*****************************************
展示Jtable簡易用法
*************************************************/
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
public class ui31 extends JFrame implements ActionListener,ItemListener
{
    Container c;
    JButton bot0;
    Color pencolor[]=new Color[5];
    String[] cname={"白色","綠色","藍色","紅色","黃色"} ;
    Object[][] ccnt ={{"0","0","0","0","0"}};
    JComboBox cbox;
    int now_x=0,now_y=0;
    JTable dsp;
    JScrollPane scroll; //用來控制捲動軸
    public ui31()
    {
        super("Jtable簡易用法");
        int i;
        int x;
        c=getContentPane();
        pencolor[0]=Color.white;
        pencolor[1]=Color.green;
        pencolor[2]=Color.blue;
        pencolor[3]=Color.red;
        pencolor[4]=Color.yellow;
        c.setLayout(new FlowLayout(FlowLayout.CENTER));
        cbox=new JComboBox(cname);// 設定選項
        cbox.setMaximumRowCount(3);//設定下拉長度，比選項少，才能捲
        bot0=new JButton("結束");
        dsp=new JTable(ccnt,cname); //設定JTable
        c.add(bot0);
        scroll=new JScrollPane(cbox);//設定捲動
        c.add(scroll);
        c.add(dsp.getTableHeader());
        c.add(dsp);
        cbox.addItemListener(this);//設定顏色選擇
        bot0.addActionListener(this);
        setSize(350,500);
        setVisible(true);
    }
    public void paint(Graphics g)
    {
        super.paint(g);
    }
    
    /***按鈕事件的傾聽方法****/
    public void actionPerformed(ActionEvent e) //按鈕事件的處理方法
    { 
        if (e.getSource()==bot0)
        {
            System.exit(0);
        }
        repaint();
    }
    public void itemStateChanged(ItemEvent e)
    {
        int cnt,xpt;
        xpt=cbox.getSelectedIndex();//看看選到哪一個就把計數器加一
        cnt=Integer.parseInt(dsp.getValueAt(0, xpt).toString());
        cnt=cnt+1;
        //System.out.println("xpt="+xpt+"cnt"+cnt+"fdfdd="+dsp.getValueAt(0, xpt).toString());
        dsp.setValueAt(Integer.toString(cnt),0,xpt);
        repaint();    
    }

    public static void main(String args[]) //程式起點
    {
        ui31 app=new ui31(); //畫圖
        //處理視窗關閉要求
        app.addWindowListener(
             new WindowAdapter()
             {
                public void windowClosing(WindowEvent e)
                {  System.exit(0);}
             });
    }
}