BAEL-3978: Add code samples for Objects.equals() (#9033)

core-java-modules/core-java-lang-2/src/test/java/com/baeldung/comparelong/CompareLongUnitTest.java

@@ -1,8 +1,12 @@
 package com.baeldung.comparelong;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatCode;
+
 import org.junit.Test;
 
+import java.util.Objects;
+
 public class CompareLongUnitTest {
 
     @Test
@@ -32,6 +36,33 @@ public class CompareLongUnitTest {
         assertThat(l1.equals(l2)).isTrue();
     }
 
+    @Test
+    public void givenLongValuesLessThan128_whenUsingObjectsEquals_thenSuccess() {
+
+        Long l1 = 127L;
+        Long l2 = 127L;
+
+        assertThat(Objects.equals(l1, l2)).isTrue();
+    }
+
+    @Test
+    public void givenLongValuesGreaterOrEqualsThan128_whenUsingObjectsEquals_thenSuccess() {
+
+        Long l1 = 128L;
+        Long l2 = 128L;
+
+        assertThat(Objects.equals(l1, l2)).isTrue();
+    }
+
+    @Test
+    public void givenNullReference_whenUsingObjectsEquals_thenNoException() {
+
+        Long l1 = null;
+        Long l2 = 128L;
+
+        assertThatCode(() -> Objects.equals(l1, l2)).doesNotThrowAnyException();
+    }
+
     @Test
     public void givenLongValuesGreaterOrEqualsThan128_whenUsingComparisonOperator_andLongValue_thenSuccess() {