I’m trying to make a multi-language app with messages inside multiple *.properties files. I’ve started working on something like this: Now, there’s a lot of messages, and I don’t feel like typing the same thing each time (plus there could me typos which could be an issue…). The first solution I thought of was to loop through all of the
Tag: reflection
Check if Annotation is inherited
I have an annotation and three classes like this: Is there any way I can determine if a present annotation is inherited or declared directly at the class? Something like a method public boolean isInherited(Class<?> clazz, MyAnnotation annotation) that should only be called if the annotation is present. Exptected output: Answer You can use getDeclaredAnnotation instead of getAnnotation:
Updating field using reflection from parent class
I have a Parent class that has a method that uses reflection to retrieve and update fields. This method will be called by the child class When the child class (in this case, an anonymous class) calls the method, which is inherited form the parent, the value of this is the child class. Because of that, I thought there would
How to scan for annotations in methods only in specific classes using reflection library java?
I have an annotation @API which I assign to all the routes i.e RequestMapping in a controller in java spring.What I want to do is,First scan all the classes in a package that are annotated with @Controller and after scanning all the controller classes,I want only to scan for Methods with annotation @API in only these controller annotated classes. How
In Kotlin, how does GSON.fromJson(…) manage to mutate a read-only field of an existing object?
In Kotlin, how can an instance’s read-only val field be mutated? In the following Kotlin code, gson.fromJson(…) gets a Thing(0) from the InstanceCreator and somehow manages to mutate value from 0 to …
Compare objects and create a new one similar to one of them
I want to compare 2 objects and create a new one with the values of the second if its values are not null. Otherwise the values of the first one should be copied to the object created. My problem is …
Akka Quickstart: An illegal reflective access operation has occurred
When running the official Akka Quickstart on my Mac terminal, I get this error: Getting org.scala-sbt sbt 1.2.8 … WARNING: An illegal reflective access operation has occurred WARNING: Illegal …
Why is `getDeclaredAnnotations()` returning an empty list when an annotation is present?
The Javadocs entry for getDeclaredAnnotations say the following: Returns annotations that are directly present on this element. This method ignores inherited annotations. If there are no annotations …
deep copy using reflection java
I can’t get a container from the class field using reflection. I tried the method below, but got an exception: Exception in thread “main” java.lang.UnsupportedOperationException at java….
How to fix this unchecked assignment warning?
var blks = ReflectionHelper.getClasses(“PACKAGE_NAME”); var blockRta = RuntimeTypeAdapterFactory.of(Block.class); for (var c : blks) { if (Block.class.isAssignableFrom(c)) { blockRta….