I would like to inject a Mockito mock object into a Spring (3+) bean for the purposes of unit testing with JUnit. My bean dependencies are currently injected by using the @Autowired annotation on private member fields. I have considered using ReflectionTestUtils.setField but the bean instance that I wish to inject is actually a proxy … Read more
Java has the transientkeyword. Why does JPA have @Transient instead of simply using the already existing java keyword? 8 Answers 8
I have written a few JUnit tests with @Test annotation. If my test method throws a checked exception and if I want to assert the message along with the exception, is there a way to do so with JUnit @Test annotation? AFAIK, JUnit 4.7 doesn’t provide this feature but does any future versions provide it? … Read more
I haven’t touched Java since using JBuilder in the late 90’s while at University, so I’m a little out of touch – at any rate I’ve been working on a small Java project this week, and using Intellij IDEA as my IDE, for a change of pace from my regular .Net development. I notice it … Read more
I saw some method in java declared as: void foo(@Nullable Object obj) { … } What’s the meaning of @Nullable here? Does it mean the input could be null? Without the annotation, the input can still be null, so I guess that’s not just it? 4 Answers 4
I have a user object that is sent to and from the server. When I send out the user object, I don’t want to send the hashed password to the client. So, I added @JsonIgnore on the password property, but this also blocks it from being deserialized into the password that makes it hard to … Read more
Which annotation, @Resource (jsr250) or @Autowired (Spring-specific) should I use in DI? I have successfully used both in the past, @Resource(name=”blah”) and @Autowired @Qualifier(“blah”) My instinct is to stick with the @Resource tag since it’s been ratified by the jsr people. Anyone has strong thoughts on this? 11 Answers 11
I am getting the following error when trying to get a JSON request and process it: org.codehaus.jackson.map.JsonMappingException: No suitable constructor found for type [simple type, class com.myweb.ApplesDO]: can not instantiate from JSON object (need to add/enable type information?) Here is the JSON I am trying to send: { “applesDO” : [ { “apple” : “Green … Read more
Should a method that implements an interface method be annotated with @Override? The javadoc of the Override annotation says: Indicates that a method declaration is intended to override a method declaration in a superclass. If a method is annotated with this annotation type but does not override a superclass method, compilers are required to generate … Read more
What is the main difference between @Before and @BeforeClass and in JUnit 5 @BeforeEach and @BeforeAll @After and @AfterClass According to the JUnit Api @Before is used in the following case: When writing tests, it is common to find that several tests need similar objects created before they can run. Whereas @BeforeClass can be used … Read more
