package api;

 import java.io.IOException;

 /** Fixing the problem caused by mixing subclassing and delegation in 

  * the <code>java.io.BufferedWriter</code>

  *

  * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>

  */

 public final class Writer {

     private final Impl impl;

     private Writer(Impl impl) {

         this.impl = impl;

     }

     public final void write(int c) throws IOException {

         impl.write(new CharSeq(c));

     }

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

 	impl.write(new CharSeq(cbuf, 0, cbuf.length));

     }

     public final void write(char cbuf[], int off, int len) throws IOException {

         impl.write(new CharSeq(cbuf, off, len));

     }

     public final void write(String str) throws IOException {

 	impl.write(str);

     }

     public final void write(String str, int off, int len) throws IOException {

         impl.write(str.subSequence(off, off + len));

     }

     public static interface Impl {

         public void write(CharSequence seq) throws IOException;

     }

 }