Count OutputStream : Stream « File Input Output « Java

1. Java
2. File Input Output
3. Stream

Count OutputStream

    
// CountOutputStream.java
// $Id: CountOutputStream.java,v 1.3 2000/08/16 21:37:57 ylafon Exp $
// (c) COPYRIGHT MIT and INRIA, 1996.
// Please first read the full copyright statement in file COPYRIGHT.html



import java.io.OutputStream;

/**
 * This class can be used to count number of bytes emitted to a stream. The
 * stream will actually throw the data away. It's main function is to count the
 * number of bytes emitted to a stream before actually emitting the bytes
 * (that's not really efficient, but works enough).
 */

public class CountOutputStream extends OutputStream {
  protected int count = 0;

  /**
   * Get the current number of bytes emitted to that stream.
   * 
   * @return The current count value.
   */

  public int getCount() {
    return count;
  }

  /**
   * Close that count stream.
   */

  public void close() {
    return;
  }

  /**
   * Flush that count stream.
   */

  public void flush() {
    return;
  }

  /**
   * Write an array of bytes to that stream.
   */

  public void write(byte b[]) {
    count += b.length;
  }

  /**
   * Write part of an array of bytes to that stream.
   */

  public void write(byte b[], int off, int len) {
    count += len;
  }

  /**
   * Write a single byte to that stream.
   */

  public void write(int b) {
    count++;
  }

  /**
   * Create a new instance of that class.
   */

  public CountOutputStream() {
    this.count = 0;
  }

}

   
    
    
    
  

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