Null Writer : Writer « File Input Output « Java

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Java » File Input Output » WriterScreenshots 
Null Writer
     
/*
  Milyn - Copyright (C) 2006

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License (version 2.1) as published by the Free Software
  Foundation.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

  See the GNU Lesser General Public License for more details:
  http://www.gnu.org/licenses/lgpl.txt
*/

import java.io.Writer;
import java.io.IOException;

/**
 * Null writer implementation.
 * <p/>
 * Data writen to this writer is swallowed (ala piping output to <i>/dev/null</i>).
 *
 @author <a href="mailto:tom.fennelly@gmail.com">tom.fennelly@gmail.com</a>
 */
public class NullWriter extends Writer {

    private Writer parentWriter;

    public NullWriter() {
        super();
    }

    public NullWriter(Object lock) {
        super(lock);
    }

    public NullWriter(Writer parentWriter) {
        super();
        this.parentWriter = parentWriter;
    }

    public Writer getParentWriter() {
        return parentWriter;
    }

    public void write(int cthrows IOException {
    }

    public void write(char cbuf[]) throws IOException {
    }

    public void write(String strthrows IOException {
    }

    public void write(String str, int off, int lenthrows IOException {
    }

    public Writer append(CharSequence csqthrows IOException {
        return this;
    }

    public Writer append(CharSequence csq, int start, int endthrows IOException {
        return this;
    }

    public Writer append(char cthrows IOException {
        return this;
    }

    public void write(char cbuf[]int off, int lenthrows IOException {
    }

    public void flush() throws IOException {
    }

    public void close() throws IOException {
    }
}

   
    
    
    
    
  
Related examples in the same category
1. String Buffer Writer
2. Provides Closable semantics ordinarily missing in a java.io.CharArrayWriter
3. A writer for char strings
4. Write the entire contents of the supplied string to the given writer. This method always flushes and closes the writer when finished.
5. Writes all characters from a Reader to a file using the default character encoding.
6. Reads characters available from the Reader and returns these characters as a String object.
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