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

[Tom Hawtin]

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 
equivalent.

Tom