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strings: Java Strings deep dive companion code (pool/intern, indy concat vs StringBuilder JMH, text blocks, string templates)

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Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01KqJyCidz3ZgRyHABv2GVJh
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Claude
2026-09-30 19:06:34 +00:00
parent 97e7352f45
commit 366579f478
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Benchmark (loop) Mode Cnt Score Error Units
ConcatBenchmark.explicitBuilder N/A avgt 10 20.838 ± 2.629 ns/op
ConcatBenchmark.formattedMethod N/A avgt 10 164.278 ± 12.164 ns/op
ConcatBenchmark.plusExpression N/A avgt 10 20.448 ± 7.264 ns/op
ConcatBenchmark.plusLatin1 N/A avgt 10 15.791 ± 4.953 ns/op
ConcatBenchmark.plusUtf16 N/A avgt 10 23.185 ± 4.275 ns/op
ConcatBenchmark.stringFormat N/A avgt 10 285.885 ± 133.980 ns/op
LoopConcatBenchmark.loopBuilder 100 avgt 5 270.251 ± 128.322 ns/op
LoopConcatBenchmark.loopBuilder 1000 avgt 5 2268.140 ± 888.134 ns/op
LoopConcatBenchmark.loopBuilder 10000 avgt 5 24468.200 ± 8712.080 ns/op
LoopConcatBenchmark.loopBuilderPresized 100 avgt 5 194.101 ± 168.069 ns/op
LoopConcatBenchmark.loopBuilderPresized 1000 avgt 5 1682.224 ± 135.261 ns/op
LoopConcatBenchmark.loopBuilderPresized 10000 avgt 5 20622.063 ± 16702.078 ns/op
LoopConcatBenchmark.loopPlusEquals 100 avgt 5 2021.521 ± 648.577 ns/op
LoopConcatBenchmark.loopPlusEquals 1000 avgt 5 73764.547 ± 11968.016 ns/op
LoopConcatBenchmark.loopPlusEquals 10000 avgt 5 8939940.357 ± 2388632.875 ns/op