BAEL-1196: jUnit @Test Annotation (#3184)

* BAEL-1196: jUnit @Test Annotation

* Fixed tests names as suggested.

* Reduced visibility on test methods.

testing-modules/junit-5/src/main/java/com/baeldung/junit5/bean/NumbersBean.java

@@ -0,0 +1,22 @@
+package com.baeldung.junit5.bean;
+
+/**
+ * Bean that contains utility methods to work with numbers.
+ * 
+ * @author Donato Rimenti
+ *
+ */
+public class NumbersBean {
+
+    /**
+     * Returns true if a number is even, false otherwise.
+     * 
+     * @param number
+     *            the number to check
+     * @return true if the argument is even, false otherwise
+     */
+    public boolean isNumberEven(int number) {
+        return number % 2 == 0;
+    }
+
+}