BAEL - 2420 Converting Float to Byte Array and vice-versa in Java (#6194)

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* BAEL-2420 Converting Float to Byte Array and vice-versa in Java

* BAEL-2420 Converting Float to Byte Array and vice-versa in Java - conversions package added

* Hexagonal architecture code removed

core-java-arrays/src/test/java/com/baeldung/array/conversions/FloatToByteArrayUnitTest.java

@@ -0,0 +1,46 @@
+package com.baeldung.array.conversions;
+
+import static com.baeldung.array.conversions.FloatToByteArray.byteArrayToFloat;
+import static com.baeldung.array.conversions.FloatToByteArray.byteArrayToFloatWithByteBuffer;
+import static com.baeldung.array.conversions.FloatToByteArray.floatToByteArray;
+import static com.baeldung.array.conversions.FloatToByteArray.floatToByteArrayWithByteBuffer;
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+import org.junit.Test;
+
+public class FloatToByteArrayUnitTest {
+
+    @Test
+    public void givenAFloat_thenConvertToByteArray() {
+        assertArrayEquals(new byte[] { 63, -116, -52, -51}, floatToByteArray(1.1f));
+    }
+
+    @Test
+    public void givenAByteArray_thenConvertToFloat() {
+        assertEquals(1.1f, byteArrayToFloat(new byte[] { 63, -116, -52, -51}), 0);
+    }
+
+    @Test
+    public void givenAFloat_thenConvertToByteArrayUsingByteBuffer() {
+        assertArrayEquals(new byte[] { 63, -116, -52, -51}, floatToByteArrayWithByteBuffer(1.1f));
+    }
+
+    @Test
+    public void givenAByteArray_thenConvertToFloatUsingByteBuffer() {
+        assertEquals(1.1f, byteArrayToFloatWithByteBuffer(new byte[] { 63, -116, -52, -51}), 0);
+    }
+
+    @Test
+    public void givenAFloat_thenConvertToByteArray_thenConvertToFloat() {
+        float floatToConvert = 200.12f;
+        byte[] byteArray = floatToByteArray(floatToConvert);
+        assertEquals(200.12f, byteArrayToFloat(byteArray), 0);
+    }
+    
+    @Test
+    public void givenAFloat_thenConvertToByteArrayWithByteBuffer_thenConvertToFloatWithByteBuffer() {
+        float floatToConvert = 30100.42f;
+        byte[] byteArray = floatToByteArrayWithByteBuffer(floatToConvert);
+        assertEquals(30100.42f, byteArrayToFloatWithByteBuffer(byteArray), 0);
+    }
+}