2 Questions on StringBuffer

Ulf Zibis Ulf.Zibis at gmx.de
Wed Mar 17 16:29:27 UTC 2010

Why there are 2 methods which do not use the super method, where I can't 
see any difference? :

     public synchronized char charAt(int index)
     public synchronized void setCharAt(int index, char ch)

Wouldn't ensureCapacity better coded as follows? :
     public void ensureCapacity(int minimumCapacity) {
         if (minimumCapacity > value.length) synchronized {
This would save the synchronization if there is nothing to do.


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