Add code examples for "Convert Java Array to Iterable" (#14144)

* Add code examples for "Convert Java Array to Iterable"

* fix formatting

core-java-modules/core-java-arrays-convert/src/main/java/com/baeldung/array/conversions/IntArrayToIterableConversionUtils.java

@@ -0,0 +1,28 @@
+package com.baeldung.array.conversions;
+
+
+import com.google.common.primitives.Ints;
+import org.apache.commons.lang3.ArrayUtils;
+
+import java.util.Arrays;
+import java.util.stream.Collectors;
+
+public class IntArrayToIterableConversionUtils {
+
+    public static Iterable<Integer> convertWithStreamToList(int[] array) {
+        return Arrays.stream(array).boxed().collect(Collectors.toList());
+    }
+
+    public static Iterable<Integer> convertWithStreamIterator(int[] array) {
+        return () -> Arrays.stream(array).iterator();
+    }
+
+    public static Iterable<Integer> convertWithApacheCommonsAndJavaAsList(int[] array) {
+        return Arrays.asList(ArrayUtils.toObject(array));
+    }
+
+    public static Iterable<Integer> convertWithGuava(int[] array) {
+        return Ints.asList(array);
+    }
+
+}

core-java-modules/core-java-arrays-convert/src/test/java/com/baeldung/array/conversions/IntArrayToIterableConversionUtilsUnitTest.java

@@ -0,0 +1,36 @@
+package com.baeldung.array.conversions;
+
+import org.junit.jupiter.api.Test;
+
+import static com.baeldung.array.conversions.IntArrayToIterableConversionUtils.*;
+import static org.junit.Assert.assertTrue;
+
+
+class IntArrayToIterableConversionUtilsUnitTest {
+
+    private int[] ints = new int[]{1, 2, 3, 4, 5};
+
+    @Test
+    void whenConvertWithStreamToList_thenGetIterable() {
+        Iterable<Integer> integers = convertWithStreamToList(ints);
+        assertTrue("should be Iterable", integers instanceof Iterable);
+    }
+
+    @Test
+    void whenConvertWithStreamIterator_thenGetIterable() {
+        Iterable<Integer> integers = convertWithStreamIterator(ints);
+        assertTrue("should be Iterable", integers instanceof Iterable);
+    }
+
+    @Test
+    void whenConvertWithApacheCommonsAndJavaAsList_thenGetIterable() {
+        Iterable<Integer> integers = convertWithApacheCommonsAndJavaAsList(ints);
+        assertTrue("should be Iterable", integers instanceof Iterable);
+    }
+
+    @Test
+    void whenConvertWithGuava_thenGetIterable() {
+        Iterable<Integer> integers = convertWithGuava(ints);
+        assertTrue("should be Iterable", integers instanceof Iterable);
+    }
+}