java关于(io&nio) 的 文件copy例子

例1：java关于nio 的 文件copy例子
import java.io.*;
import java.nio.channels.FileChannel;
public class IO2 {
 
 public void copyFile(String file,String copyFile) throws IOException{
     try {
         // Create channel on the source
         FileChannel srcChannel = new FileInputStream(file).getChannel();
    
         // Create channel on the destination
         FileChannel dstChannel = new FileOutputStream(copyFile).getChannel();
    
         // Copy file contents from source to destination
         dstChannel.transferFrom(srcChannel, 0, srcChannel.size());
    
         // Close the channels
         srcChannel.close();
         dstChannel.close();
     } catch (IOException e) {
     }
 }
  public static void main(String args[]) throws IOException{
  IO2 io =new IO2();
  io.copyFile("C://webapps.rar","C://11.rar");
 }
}

例2：java关于io 的 文件copy例子

import java.io.*;
import java.nio.channels.FileChannel;
public class IO2 {
 
 public void copyFile(String file,String copyFile) throws IOException{
  int i;
  FileInputStream in = new FileInputStream(file);
  FileOutputStream out = new FileOutputStream(copyFile);
  do{  
   i = in.read();
   if(i!=-1){
     out.write(i);
  //   System.out.println(i);
    }
  }while(i!=-1);

  out.close();
  in.close();
 }

 public static void main(String args[]) throws IOException{
  IO2 io =new IO2();
  io.copyFile("C://webapps.rar","C://11.rar");
 }
}