不同硬盘之间的高效率复制

import java.io.File;


import java.io.FileInputStream;


import java.io.FileNotFoundException;


import java.io.FileOutputStream;


import java.io.IOException;


import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;

public class ReadFile {
private String sourceFileName;
private String sourcePathName;
private String aimFileName;
private String aimPathName;

/*public ReadFile(String sourcePathName,String sourceFileName,String aimPathName,String aimFileName ){
  this.sourcePathName=sourcePathName;
  this.sourceFileName=sourceFileName;
  this.aimFileName=aimFileName;
  this.aimPathName=aimPathName;
}*/
public void readWriteFile(String sourcePathName,String sourceFileName,String aimFileName,String aimPathName){
  File aimFile=new File(aimPathName);
  if(!aimFile.exists()){
   if(!aimFile.mkdirs()) {
    System.out.println("can not create file path!");
    System.exit(1);
   }
  }
  File aimDir=new File(aimFile,aimFileName);
  File sourceFile=new File(sourcePathName);
  if(!sourceFile.exists()){
   System.out.println("the source file do not exist!Please check!");
   System.exit(1);
   }
  File sourceDir=new File(sourceFile,sourceFileName);
  FileOutputStream outputFile=null;
  FileInputStream inputFile=null;
  try{
   inputFile=new FileInputStream(sourceDir);
   outputFile=new FileOutputStream(aimDir,true);
  }catch(FileNotFoundException e){
   e.printStackTrace(System.err);
   System.exit(1);
  }
  FileChannel inChannel=inputFile.getChannel();
  FileChannel outChannel=outputFile.getChannel();
  ByteBuffer buf=ByteBuffer.allocate(1024);
  try{
   while(inChannel.read(buf)!=-1){
    System.out.print("source string is:"+((ByteBuffer)(buf.flip())).asCharBuffer().toString()+"");
     outChannel.write(buf);
    buf.clear();
   }
   outputFile.close();
   System.out.println("EOF reached");
   inputFile.close();
  }catch(IOException e){
   e.printStackTrace(System.err);
   System.exit(1);
  }
  System.exit(0);
}
public static void main(String[] args){
  String sourcePathName="E:\\sourceFile";
  String sourceFileName="sFile.txt";
  String aimPathName="D:\\aimFile";
  String aimFileName="aFile.txt";
  
  ReadFile rf=new ReadFile();
  rf.readWriteFile(sourcePathName, sourceFileName, aimFileName, aimPathName);
}

}