issue 1500 - using Junit 5 and resolved a build issue

trampoline/pom.xml

@@ -35,11 +35,6 @@
     </parent>
     <artifactId>trampoline</artifactId>
     <dependencies>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <scope>test</scope>
-        </dependency>
 
         <dependency>
             <groupId>org.junit.jupiter</groupId>

trampoline/src/main/java/com/iluwatar/trampoline/Trampoline.java

@@ -98,12 +98,12 @@ public interface Trampoline<T> {
         return trampoline(this);
       }
 
-      T trampoline(final Trampoline<T> trampoline) {
+      private T trampoline(final Trampoline<T> trampoline) {
         return Stream.iterate(trampoline, Trampoline::jump)
             .filter(Trampoline::complete)
             .findFirst()
             .map(Trampoline::result)
-            .orElseThrow();
+            .get();
       }
     };
   }

trampoline/src/test/java/com/iluwatar/trampoline/TrampolineAppTest.java

@@ -23,10 +23,9 @@
 
 package com.iluwatar.trampoline;
 
-import static org.junit.Assert.assertEquals;
-
-import org.junit.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
+import org.junit.jupiter.api.Test;
 
 /**
  * Test for trampoline pattern.
@@ -37,7 +36,7 @@ public class TrampolineAppTest {
   @Test
   public void testTrampolineWithFactorialFunction() {
     long result = TrampolineApp.loop(10, 1).result();
-    assertEquals("Be equal", 3628800, result);
+    assertEquals(3_628_800, result);
   }
 
 }