java代码片段

 

 

 使用NIO进行快速的文件拷贝

public static void fileCopy( File in, File out ) throws IOException  {   
        FileChannel inChannel = new FileInputStream( in ).getChannel();   
        FileChannel outChannel = new FileOutputStream( out ).getChannel();   
        try{   
//          inChannel.transferTo(0, inChannel.size(), outChannel);      // original -- apparently has trouble copying large files on Windows   
   
            // magic number for Windows, 64Mb - 32Kb)   
            int maxCount = (64 * 1024 * 1024) - (32 * 1024);   
            long size = inChannel.size();   
            long position = 0;   
            while ( position < size ) {   
               position += inChannel.transferTo( position, maxCount, outChannel );   
            }   
        }   
        finally {   
            if ( inChannel != null ) {   
               inChannel.close();   
            }   
            if ( outChannel != null ) {   
                outChannel.close();   
            }   
        }   
    }  

  

 

得到当前方法的名字

String methodName = Thread.currentThread().getStackTrace()[1].getMethodName();