これは何 java9(earlyAccess版)で文字列の結合を実験したもの ※9 Build 134 テスト機のスペック Windows10 Core i7 メモリは8GB 実験に使ったソース JMHで実行した結果 java8 Benchmark Mode Cnt Score Error Units jmhTest.MyBenchmarkStringLine.call1StringLine thrpt 10 116.587 ± 0.733 ops/s jmhTest.MyBenchmarkStringLine.call2StringConcat thrpt 10 69.140 ± 2.958 ops/s jmhTest.MyBenchmarkStringLine.call3StringBuffer thrpt 10 105.525 ± 1.598 ops/s jmhTest.MyBenc
![Java9で文字列の結合の速度を確認する - Qiita](https://cdn-ak-scissors.b.st-hatena.com/image/square/4e0da03ee3264bf4bc6a2c51fb50668dd9537061/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-412672c5f0600ab9a64263b751f1bc81.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTk3MiZoPTM3OCZ0eHQ9SmF2YTklRTMlODElQTclRTYlOTYlODclRTUlQUQlOTclRTUlODglOTclRTMlODElQUUlRTclQjUlOTAlRTUlOTAlODglRTMlODElQUUlRTklODAlOUYlRTUlQkElQTYlRTMlODIlOTIlRTclQTIlQkElRTglQUElOEQlRTMlODElOTklRTMlODIlOEImdHh0LWFsaWduPWxlZnQlMkN0b3AmdHh0LWNvbG9yPSUyMzIxMjEyMSZ0eHQtZm9udD1IaXJhZ2lubyUyMFNhbnMlMjBXNiZ0eHQtc2l6ZT01NiZzPWM5ZjM2M2E3ZWMyN2ZjOTRkMDBiMmMyNTYxY2UxMGFl%26mark-x%3D142%26mark-y%3D57%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZoPTc2Jnc9NzcwJnR4dD0lNDBkZWFmX3RhZGFzaGkmdHh0LWNvbG9yPSUyMzIxMjEyMSZ0eHQtZm9udD1IaXJhZ2lubyUyMFNhbnMlMjBXNiZ0eHQtc2l6ZT0zNiZ0eHQtYWxpZ249bGVmdCUyQ3RvcCZzPTFjNWZkNmQ5NDRkNDIyNmUwZTYzZDhjMTA3OWY0ZGZj%26blend-x%3D142%26blend-y%3D486%26blend-mode%3Dnormal%26s%3Dbd9868a1c47a3c9ba4c6fdfb0297f13d)