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[java] stringbuffer optimization

Started by sma202 Jan 23, 2001 at 2:05 PM 0 replies 450+ views

Original Post

Jan 23, 2001 at 2:05 PM

Heres something I was wondering about, suppose we have the following statement: StringBuffer sb = new StringBuffer() sb.append(a); sb.append(b); sb.append(c); And contrast it with this code: StringBuffer sb = new StringBuffer() synchronized (sb) { sb.append(a); sb.append(b); sb.append(c); } Is the second piece of code faster because the first code has to perform 3 internal locks within the stringbuffer class versus only one in second piece of code?

GKW

Jan 23, 2001 at 10:42 PM

I would be interested in the answer to this. But unless you need the string concat "+" operation I would suggest making your own string class that does not check for sync, assuming you don''t need it. I assume that even if it has a lock from the start, the stringbuffer will still check for a lock.

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