四种文件（图片）拷贝的方法

来源：互联网发布：wish怎么优化编辑：程序博客网时间：2024/04/28 17:35

package com.qll.cn;

import java.io.FileInputStream;
import java.io.FileOutputStream;

public class CopyFile1 {

public static void main(String[] args) {
  try {
   FileInputStream fin = new FileInputStream("D://P1050384.JPG");
   FileOutputStream fout = new FileOutputStream(
     "C://Documents and Settings//Administrator//桌面//新建文件夹//P1050384.JPG");
   byte[] b = new byte[1024];
   int read = fin.read(b);
   while (read != -1) {
    fout.write(b);
    read = fin.read(b);
   }
   fin.close();
   fout.close();
  } catch (Exception e) {
   e.printStackTrace();
  }
}
}

package com.qll.cn;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;

public class CopyFile2 {

public static void main(String[] args) {
  try {
   FileInputStream fis = new FileInputStream("D://P1050384.JPG");
   FileOutputStream fos = new FileOutputStream(
     "C://Documents and Settings//Administrator//桌面//新建文件夹//P1050384.JPG");
   BufferedInputStream bis = new BufferedInputStream(fis);
   BufferedOutputStream bos = new BufferedOutputStream(fos);
   byte[] b = new byte[4096];
   int read = bis.read(b);
   while (read != -1) {
    fos.write(b);
    read = bis.read(b);
   }
   bos.close();
   bis.close();
  } catch (Exception e) {
   e.printStackTrace();
  }
}
}

package com.qll.cn;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;

public class CopyFile3 {

public static void main(String[] args) {
  try {
   FileReader fr = new FileReader("D://P1050384.JPG");
   FileWriter fw = new FileWriter(
     "C://Documents and Settings//Administrator//桌面//新建文件夹//P1050384.JPG");
   BufferedReader br = new BufferedReader(fr);
   BufferedWriter bw = new BufferedWriter(fw);
   byte b[] = new byte[4096];
   int read = fr.read();
   while (read != -1) {
    bw.write(read);
    read = fr.read();
   }
   br.close();
   bw.close();
  } catch (Exception e) {

e.printStackTrace();
}
}
}

package com.qll.cn;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;

public class CopyFile4 {

public static void main(String[] args) {
  try {
   BufferedReader br = new BufferedReader(new FileReader(
     "D://P1050384.JPG"));
   BufferedWriter bw = new BufferedWriter(
     new FileWriter(
       "C://Documents and Settings//Administrator//桌面//新建文件夹//P1050384.JPG"));
   String s = br.readLine();
   while (s != null) {
    bw.write(s);
    bw.newLine();
    s = br.readLine();
   }
   br.close();
   bw.close();
  } catch (Exception e) {
   e.printStackTrace();
  }
}
}