diff --git a/quartz-manager-parent/quartz-manager-common/src/main/java/it/fabioformosa/quartzmanager/api/common/utils/Try.java b/quartz-manager-parent/quartz-manager-common/src/main/java/it/fabioformosa/quartzmanager/api/common/utils/Try.java
index 285dad3..27f7f19 100644
--- a/quartz-manager-parent/quartz-manager-common/src/main/java/it/fabioformosa/quartzmanager/api/common/utils/Try.java
+++ b/quartz-manager-parent/quartz-manager-common/src/main/java/it/fabioformosa/quartzmanager/api/common/utils/Try.java
@@ -2,25 +2,29 @@ package it.fabioformosa.quartzmanager.api.common.utils;
 
 import java.util.function.Function;
 
+/**
+ *
+ * @param <R> success type
+ */
 public class Try<R> {
 
   private final Throwable failure;
   private final R success;
 
-  public Try(Throwable failure, R success) {
+  private Try(Throwable failure, R success) {
     this.failure = failure;
     this.success = success;
   }
 
-  public R getSuccess() {
+  private R getSuccess() {
     return success;
   }
 
-  public static <R> Try<R> success(R r){
+  private static <R> Try<R> success(R r){
     return new Try<>(null, r);
   }
 
-  public static <R> Try<R> failure(Throwable e){
+  private static <R> Try<R> failure(Throwable e){
     return new Try<>(e, null);
   }
 
@@ -38,11 +42,11 @@ public class Try<R> {
    return t -> Try.with(checkedFunction).apply(t).getSuccess();
   }
 
-  public boolean isSuccess(){
+  private boolean isSuccess(){
     return this.failure == null;
   }
 
-  public boolean isFailure(){
+  private boolean isFailure(){
     return this.failure != null;
   }
 
diff --git a/quartz-manager-parent/quartz-manager-common/src/test/java/it/fabioformosa/quartzmanager/api/common/utils/TryTest.java b/quartz-manager-parent/quartz-manager-common/src/test/java/it/fabioformosa/quartzmanager/api/common/utils/TryTest.java
new file mode 100644
index 0000000..4ffba71
--- /dev/null
+++ b/quartz-manager-parent/quartz-manager-common/src/test/java/it/fabioformosa/quartzmanager/api/common/utils/TryTest.java
@@ -0,0 +1,28 @@
+package it.fabioformosa.quartzmanager.api.common.utils;
+
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.util.Optional;
+
+class TryTest {
+
+  String raiseExceptionIfHello(String greetings) throws Exception {
+    if("hello".equals(greetings))
+      throw new Exception("hello");
+    return greetings;
+  }
+
+  @Test
+  void givenAFunction_whenItRaisesAnException_thenItReturnsNull(){
+    String hello = Optional.of("hello").map(Try.sneakyThrow(this::raiseExceptionIfHello)).orElse(null);
+    Assertions.assertThat(hello).isNull();
+  }
+
+  @Test
+  void givenAFunction_whenItDoesntRaisesAnException_thenItReturnsTheValue(){
+    String hello = Optional.of("not hello").map(Try.sneakyThrow(this::raiseExceptionIfHello)).orElse(null);
+    Assertions.assertThat(hello).isEqualTo("not hello");
+  }
+
+}