--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/micro/org/openjdk/bench/java/lang/StringUpperLower.java Fri Nov 16 23:39:51 2018 +0100
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2014 Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package org.openjdk.bench.java.lang;
+
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.BenchmarkMode;
+import org.openjdk.jmh.annotations.Mode;
+import org.openjdk.jmh.annotations.OutputTimeUnit;
+import org.openjdk.jmh.annotations.Scope;
+import org.openjdk.jmh.annotations.Setup;
+import org.openjdk.jmh.annotations.State;
+
+import java.util.concurrent.TimeUnit;
+
+@BenchmarkMode(Mode.AverageTime)
+@OutputTimeUnit(TimeUnit.NANOSECONDS)
+@State(Scope.Thread)
+public class StringUpperLower {
+
+ private String strLowerCase;
+ private String strMixedCase;
+ private String strUpperCase;
+
+ @Setup
+ public void setup() {
+ strLowerCase = "this is a simple string with different cases";
+ strMixedCase = "This IS a SImpLE strING wITh DiFfErEnT CASeS";
+ strUpperCase = "THIS IS A SIMPLE STRING WITH DIFFERENT CASES";
+ }
+
+ @Benchmark
+ public String lowerToLower() {
+ return strLowerCase.toLowerCase();
+ }
+
+ @Benchmark
+ public String mixedToLower() {
+ return strMixedCase.toLowerCase();
+ }
+
+ @Benchmark
+ public String upperToLower() {
+ return strUpperCase.toLowerCase();
+ }
+
+ @Benchmark
+ public String lowerToUpper() {
+ return strLowerCase.toUpperCase();
+ }
+
+ @Benchmark
+ public String mixedToUpper() {
+ return strMixedCase.toUpperCase();
+ }
+
+ @Benchmark
+ public String upperToUpper() {
+ return strUpperCase.toUpperCase();
+ }
+
+}