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http://blog.chinaunix.net/u/17347/showart.php?id=103523
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/*
 * myFile.java
 *
 * Created on 2006Äê4ÔÂ22ÈÕ, ÏÂÎç7:22
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */
package myUrl;
import java.io.*;
/**
 *
 * @author flying
 */
public class myFile {
   
    /** Creates a new instance of myFile */
    public myFile() {
    }
    public void SaveFileToFile(String F1,String F2){
        FileInputStream fis = null;
        FileOutputStream fos = null;
        try{
            fis = new FileInputStream(new File(F1));    //½¨Á¢ÎļþÊäÈëÁ÷
           
            File file = new File(F2);
            fos = new FileOutputStream(F2);
           
            int r;
            while((r=fis.read())!=-1){
                fos.write((byte)r);
            }
        }
        catch(FileNotFoundException ex){
            System.out.println("Source File not found:"+F1);