diff --git a/core-java-modules/core-java-lang-6/pom.xml b/core-java-modules/core-java-lang-6/pom.xml
index 54035c1eb0..a47ed459f6 100644
--- a/core-java-modules/core-java-lang-6/pom.xml
+++ b/core-java-modules/core-java-lang-6/pom.xml
@@ -23,6 +23,16 @@
commons-lang3
${commons-lang3.version}
+
+ org.openjdk.jmh
+ jmh-core
+ ${jmh.version}
+
+
+ org.openjdk.jmh
+ jmh-generator-annprocess
+ ${jmh.version}
+
@@ -39,6 +49,11 @@
mapstruct-processor
${mapstruct.version}
+
+ org.openjdk.jmh
+ jmh-generator-annprocess
+ ${jmh.version}
+
@@ -50,6 +65,7 @@
17
UTF-8
1.6.0.Beta1
+ 1.37
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-6/src/test/java/com/baeldung/recursivelysumintarray/RecursivelySumIntArrayUnitTest.java b/core-java-modules/core-java-lang-6/src/test/java/com/baeldung/recursivelysumintarray/RecursivelySumIntArrayUnitTest.java
new file mode 100644
index 0000000000..fc61a806e1
--- /dev/null
+++ b/core-java-modules/core-java-lang-6/src/test/java/com/baeldung/recursivelysumintarray/RecursivelySumIntArrayUnitTest.java
@@ -0,0 +1,38 @@
+package com.baeldung.recursivelysumintarray;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class RecursivelySumIntArrayUnitTest {
+
+ private static final int[] INT_ARRAY = { 1, 2, 3, 4, 5 };
+
+ static int sumIntArray1(int[] array) {
+ if (array.length == 1) {
+ return array[0];
+ } else {
+ return array[0] + sumIntArray1(Arrays.copyOfRange(array, 1, array.length));
+ }
+ }
+
+ static int sumIntArray2(int[] array, int index) {
+ if (index == 0) {
+ return array[index];
+ } else {
+ return array[index] + sumIntArray2(array, index - 1);
+ }
+ }
+
+ @Test
+ void whenUsingSumIntArray1_thenGetExpectedResult() {
+ assertEquals(15, sumIntArray1(INT_ARRAY));
+ }
+
+ @Test
+ void whenUsingSumIntArray2_thenGetExpectedResult() {
+ assertEquals(15, sumIntArray2(INT_ARRAY, INT_ARRAY.length - 1));
+ }
+}
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-6/src/test/java/com/baeldung/recursivelysumintarray/SumArrayBenchmark.java b/core-java-modules/core-java-lang-6/src/test/java/com/baeldung/recursivelysumintarray/SumArrayBenchmark.java
new file mode 100644
index 0000000000..7d6a612a8d
--- /dev/null
+++ b/core-java-modules/core-java-lang-6/src/test/java/com/baeldung/recursivelysumintarray/SumArrayBenchmark.java
@@ -0,0 +1,61 @@
+package com.baeldung.recursivelysumintarray;
+
+import static com.baeldung.recursivelysumintarray.RecursivelySumIntArrayUnitTest.sumIntArray1;
+import static com.baeldung.recursivelysumintarray.RecursivelySumIntArrayUnitTest.sumIntArray2;
+
+import java.util.Random;
+import java.util.concurrent.TimeUnit;
+
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.BenchmarkMode;
+import org.openjdk.jmh.annotations.Fork;
+import org.openjdk.jmh.annotations.Measurement;
+import org.openjdk.jmh.annotations.Mode;
+import org.openjdk.jmh.annotations.OutputTimeUnit;
+import org.openjdk.jmh.annotations.Param;
+import org.openjdk.jmh.annotations.Scope;
+import org.openjdk.jmh.annotations.Setup;
+import org.openjdk.jmh.annotations.State;
+import org.openjdk.jmh.annotations.Warmup;
+import org.openjdk.jmh.runner.Runner;
+import org.openjdk.jmh.runner.options.Options;
+import org.openjdk.jmh.runner.options.OptionsBuilder;
+
+@BenchmarkMode(Mode.AverageTime)
+@State(Scope.Thread)
+@OutputTimeUnit(TimeUnit.NANOSECONDS)
+@Warmup(iterations = 2)
+@Fork(1)
+@Measurement(iterations = 5)
+public class SumArrayBenchmark {
+
+ public static void main(String[] args) throws Exception {
+ Options options = new OptionsBuilder().include(SumArrayBenchmark.class.getSimpleName())
+ .build();
+ new Runner(options).run();
+ }
+
+ @Param({ "10", "10000" })
+ public int size;
+ int[] array;
+
+ @Setup
+ public void setup() {
+ var r = new Random();
+ array = new int[size];
+
+ for (int i = 0; i < size; i++) {
+ array[i] = r.nextInt();
+ }
+ }
+
+ @Benchmark
+ public int withArrayCopy() {
+ return sumIntArray1(array);
+ }
+
+ @Benchmark
+ public int withoutArrayCopy() {
+ return sumIntArray2(array, array.length - 1);
+ }
+}
\ No newline at end of file