BAEL2489 - Avoid check for null statement in Java (#6411)

* BAEL2489 - Avoid check for null statement in Java

* BAEL2489 Avoid check for null statement in Java

* BAEL2489 Avoid check for null statement in Java

* BAEL2489 Avoid check for null statement in Java

* BAEL2489 Avoid check for null statement in Java

* BAEL2489 Avoid check for null statement in Java - Removing unused pom changes

* BAEL2489 Avoid check for null statement in Java - Removing unused pom changes

* Delete pom.xml

Removing unused changes in core-java

* BAEL2489 Avoid check for null statement in Java - Removing unused pom changes

patterns/design-patterns-2/src/main/java/com/baeldung/nulls/UsingOptional.java

@@ -0,0 +1,27 @@
+package com.baeldung.nulls;
+
+import java.util.Optional;
+
+public class UsingOptional {
+
+    public Optional<Object> process(boolean processed) {
+
+        String response = doSomething(processed);
+
+        if (response == null) {
+            return Optional.empty();
+        }
+
+        return Optional.of(response);
+    }
+
+    private String doSomething(boolean processed) {
+
+        if (processed) {
+            return "passed";
+        } else {
+            return null;
+        }
+    }
+
+}