IO流大文件拷贝

 1 package com.test.io;
 2 
 3 import java.io.BufferedInputStream;
 4 import java.io.BufferedOutputStream;
 5 import java.io.File;
 6 import java.io.FileInputStream;
 7 import java.io.FileOutputStream;
 8 import java.io.IOException;
 9 
 public class TestIO {
     private static int BUFFER_SIZE = 8192;
 
     public static void main(String[] args) throws IOException {
 
         String resourcesPath="f:/a.grd";
         String targetPath="d:/a.grd";
         File resourcesFile = new File(resourcesPath);
         File targetFile = new File(targetPath);
         BufferedInputStream input = new BufferedInputStream(new FileInputStream(resourcesFile));
         BufferedOutputStream output = new BufferedOutputStream(new FileOutputStream(targetFile));
         try {
             
             byte[] buffer = new byte[BUFFER_SIZE];
             int n = 0;
             while (-1 != (n = input.read(buffer, 0, BUFFER_SIZE))) {
                 output.write(buffer, 0, n);
             }
         } finally {
             if (input != null) {
                 input.close();
             }
             if (output != null) {
                 output.close();
             }
         }
     }
 }