會寫程式的貓: 網路程式設計 2009/06/12 作業(期末考題)

/*
(期末考題1)寫一個程式,
可以用按鈕或PgUp,PgDn來翻閱顯示一檔案夾中所有的照片(一次顯示一張)
亦可選擇每秒顯示一張(循環顯示所有照片)
*/

import java.awt.*;
import java.awt.event.*; 
import javax.swing.*;
import java.io.*;
public class imgUPDO extends Thread implements KeyListener {
    Frame frm= new Frame("imgUPDO");
    
    JButton cp1;
    ImageIcon icon;
    ImageIcon[] img;
    
    String nameStr[] = new String[100]; 
    int n = 0;
    int nn=0;
    int sum = 0;
    public imgUPDO(){
        File f = new File("E:\\data\\MyJavaData\\網路程式設計\\bataText");
        String[] list = f.list();
        System.out.println(f.getAbsolutePath());
        System.out.println(f.list());
        
        String str[] = new String[100]; 
        for(int i = 0; i < list.length; i++){
            for(int x = 0 ; x < list[i].length() ; x++){
                if(list[i].charAt(x) == 'j')
                    if(list[i].charAt(x+1) == 'p')
                        if(list[i].charAt(x+2) == 'g'){
                            sum++;
                            str[sum-1] = list[i];
                            System.out.println(str[sum-1]);
                        }
            }
        }
        img = new ImageIcon[sum];
        for(int x = 0 ; x < sum ; x++ ){
            img[x] = new ImageIcon(str[x]);
        }
        System.out.println(sum);
        
        icon = new ImageIcon("cat.jpg");
        cp1=new JButton(icon);
        frm.add(cp1);
         
        frm.setSize(800,600);
        frm.setVisible(true);
        frm.addKeyListener(this); 
        start();
    }
    public void run(){
        try {    
            while(true){
                sleep(1000);  
                nn++;
                //System.out.println("run = "+nn);
                if(nn == sum) nn = 0;
                if(nn <= -1) nn = sum-1;
                icon = img[nn];
                cp1.setIcon(icon);
                if(nn == sum-1) nn = -1;
            }
        }catch (InterruptedException e){}
    }
    
    public void keyTyped(KeyEvent e){    
        
    }
    public void keyPressed(KeyEvent e){    
         
    }
    public void keyReleased(KeyEvent e){    
        System.out.println(e.getKeyCode());
        if(e.getKeyCode() == 34){
            nn++;
            icon = img[nn];
            cp1.setIcon(icon);
            if(nn == sum-1) nn = -1;
        }else if(e.getKeyCode() == 33){
            nn--;
            if(nn <= -1) nn = sum-1;
            icon = img[nn];
            cp1.setIcon(icon);
        }
        System.out.println(nn);
    }
    
    public static void main(String args[]){  
        new imgUPDO();
    }
}

會寫程式的貓

2009年6月11日

網路程式設計 2009/06/12 作業(期末考題)

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