Inefficient use StringBuffer or StringBuilder[Optimization|clean-up] {Package: con.sun. * java.lang*}

Tom Hawtin tom.hawtin at
Fri Jun 7 14:09:09 UTC 2013

On 07/06/2013 14:54, Andrew Haley wrote:
> On 06/07/2013 02:18 PM, Otávio Gonçalves de Santana wrote:

>> sb.append("    xxx:   [" + getXXX() + "]\n");
>> for this:
>> sb.append("    xxx:   [").append(getXXX()).append("]\n");
> Hmm.  I wonder that a JIT can't do this automatically.  Perhaps
> it already does; I haven't looked.

The capacity of the StringBuilder may be different for the two 
statements. So even a "high-level rewriting" wouldn't be sufficiently 


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