Run-length encoding (RLE) of stream segments ...

 Actually, I just coded an implementation myself, but as I was testing my code, I got an Exception that to me looks like a bug more than an error from myself
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 Isn't java.lang.StringBuffer supposed to do its internal buffering by itself?
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 lbrtchx
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Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 16
    at java.lang.AbstractStringBuilder.insert(AbstractStringBuilder.java:979)
    at java.lang.StringBuffer.insert(StringBuffer.java:446)
    at AUtils00Test.main(AUtils00Test.java:104)
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 /java/lang/StringBuffer.java's insert should "ensureCapacity_unsynchronized" before doing its business as it does for all other methods; which you can see from:
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 http://www.opensource.apple.com/source/gccfast/gccfast-1622/libjava/java/lang/StringBuffer.java
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 /** Insert the <code>String</code> argument into this <code>StringBuffer</code>.
   * @param offset the place to insert.
   * @param str the <code>String</code> to insert.
   * @return this <code>StringBuffer</code>.
   * @exception IndexOutOfBoundsException if <code>offset</code> is out
   * of range for this <code>StringBuffer</code>.
   */
  public synchronized StringBuffer insert (int offset, String str)
  {
    if (offset < 0 || offset > count)
      throw new StringIndexOutOfBoundsException (offset);
    // Note that using `null' is from JDK 1.2.
    if (str == null)
      str = "null";
    int len = str.length();
    ensureCapacity_unsynchronized (count+len);
    System.arraycopy(value, offset, value, offset+len, count-offset);
    str.getChars(0, len, value, offset);
    count += len;
    return this;
  }
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