BAEL-5157 - Exception Handling with Jersey (#12090)

* BAEL-5157 - Exception Handling with Jersey

First draft:
https://drafts.baeldung.com/wp-admin/post.php?post=131880&action=edit

* BAEL-5157

* more meaningful exception messages

* BAEL-5157

* midified integration test to use the first available port

jersey/src/test/java/com/baeldung/jersey/exceptionhandling/rest/StocksResourceIntegrationTest.java

@@ -17,6 +17,7 @@ import javax.ws.rs.core.Response;
 import javax.ws.rs.core.Response.Status;
 
 import org.glassfish.jersey.test.JerseyTest;
+import org.glassfish.jersey.test.TestProperties;
 import org.junit.Test;
 
 import com.baeldung.jersey.exceptionhandling.ExceptionHandlingConfig;
@@ -35,6 +36,7 @@ public class StocksResourceIntegrationTest extends JerseyTest {
 
     @Override
     protected Application configure() {
+        forceSet(TestProperties.CONTAINER_PORT, "0");
         return new ExceptionHandlingConfig();
     }