jackson cleanup work

Author: eugenp

jackson/src/test/java/org/baeldung/jackson/sandbox/SandboxTest.java

@@ -4,6 +4,7 @@
 
 import org.junit.Test;
 
+import com.fasterxml.jackson.annotation.JsonAutoDetect;
 import com.fasterxml.jackson.core.JsonParseException;
 import com.fasterxml.jackson.databind.JsonMappingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
@@ -16,6 +17,8 @@ public final void whenDeserializing_thenCorrect() throws JsonParseException, Jso
         testElement.setX(10);
         testElement.setY("adasd");
         final ObjectMapper om = new ObjectMapper();
+        om.setVisibilityChecker(om.getSerializationConfig().getDefaultVisibilityChecker().withFieldVisibility(JsonAutoDetect.Visibility.ANY).withGetterVisibility(JsonAutoDetect.Visibility.NONE));
+
         final String serialized = om.writeValueAsString(testElement);
         System.err.println(serialized);
     }

jackson/src/test/java/org/baeldung/jackson/sandbox/TestElement.java

@@ -1,13 +1,10 @@
 package org.baeldung.jackson.sandbox;
 
-import com.fasterxml.jackson.annotation.JsonIgnore;
-
 public class TestElement {
 
     int x;
 
-    @JsonIgnore
-    private String y;
+    private transient String y;
 
     public int getX() {
         return x;