String
concatenation used as the argument to StringBuffer.append()
,
StringBuilder.append()
or Appendable.append()
.
Such calls may profitably be turned into chained append calls on the existing StringBuffer/Builder/Appendable
saving the cost of an extra StringBuffer/Builder
allocation.
This inspection ignores compile-time evaluated String
concatenations, in which case the conversion would only
worsen performance.
Example:
void bar(StringBuilder builder, String name) { builder.append("Hello," + name); //warning builder.append("Hello," + "world"); //no warning }