Reverse a file with RandomAccessFile

  


import java.io.RandomAccessFile;

class ReverseFile {

  public static void main(String args[]) throws Exception {
    RandomAccessFile raf = new RandomAccessFile(args[0], "r");
    long position = raf.length();
    while (position > 0) {
      position -= 1;
      raf.seek(position);
      byte b = raf.readByte();
      System.out.print((char) b);
    }
  }
}

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Reverse a file with RandomAccessFile : RandomAccessFile « File Input Output « Java

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