-Djava.lang.stringBuffer.growAggressively

The default behavior is to grow a 1 G char[] or larger StringBuffer or StringBuilder only as much as necessary to accommodate the String being added. Set this property to true to immediately grow to the maximum possible size, which matches the Oracle HotSpot VM.

Syntax

    -Djava.lang.stringBufferAndBuilder.growAggressively=[true|false]

Setting	Effect	Default
true	Above 1 G, grow to the maximum size	yes
false	Above 1 G, grow only as required