diff --git a/core-java-12/pom.xml b/core-java-12/pom.xml
index defef5e9d3..c5eec1a4bb 100644
--- a/core-java-12/pom.xml
+++ b/core-java-12/pom.xml
@@ -34,6 +34,7 @@
                 <configuration>
                     <source>${maven.compiler.source.version}</source>
                     <target>${maven.compiler.target.version}</target>
+                    <compilerArgs>--enable-preview</compilerArgs>
                 </configuration>
             </plugin>
         </plugins>
diff --git a/core-java-12/src/test/java/com/baeldung/switchExpression/SwitchUnitTest.java b/core-java-12/src/test/java/com/baeldung/switchExpression/SwitchUnitTest.java
new file mode 100644
index 0000000000..708e416090
--- /dev/null
+++ b/core-java-12/src/test/java/com/baeldung/switchExpression/SwitchUnitTest.java
@@ -0,0 +1,37 @@
+package com.baeldung.switchExpression;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class SwitchUnitTest {
+
+    @Test
+    public void switchJava12(){
+
+        var month = Month.AUG;
+
+        var value = switch(month){
+            case JAN,JUN, JUL -> 3;
+            case FEB,SEP, OCT, NOV, DEC -> 1;
+            case MAR,MAY, APR, AUG -> 2;
+        };
+
+        Assert.assertEquals(value, 2);
+    }
+
+    @Test
+    public void switchLocalVariable(){
+        var month = Month.AUG;
+        int i = switch (month){
+            case JAN,JUN, JUL -> 3;
+            case FEB,SEP, OCT, NOV, DEC -> 1;
+            case MAR,MAY, APR, AUG -> {
+                int j = month.toString().length() * 4;
+                break j;
+            }
+        };
+        Assert.assertEquals(12, i);
+    }
+
+    enum Month {JAN, FEB, MAR, APR, MAY, JUN, JUL, AUG, SEP, OCT, NOV, DEC}
+}