I know that static variables are not eligible for garbage collection for as long as the class is loaded but i was wondering if that is the same case for it’s object contents. I have this static List which contains a class object references. Are “someObject” eligible for garbage collection if…
Tag: static
How to create a list of class names and iterate throught the static methoc in it?
I have list of classes: List<Class<?>> = Array.asList(ClassA, ClassB, ClassC, ClassD); each of them has a static method staticMethod(byte[] bytes) How can I iterate through this list of classes and calling the staticMethod? Answer Represent your List like lambda expressions for your static methods…
Retrieving the position of the PlayerEntity class (Fabric)
I am trying to make a very (at least I think) simple mod for Minecraft that calculates the coordinates of the nearest stronghold. For this, I need the player’s position as well as its jaw. However, I am struggling to even retrieve these simple values. Here’s the code: Keep in mind that I am very (…
Is it possible to access a private static variable and method?
We can access a static property of a class by writing className.propertyName, but if the property (method/variable) is private then is it possible to access that property? For example, This will print A.a = 50 But if I change static int a = 50; to private static int a = 50; then can I access that variable any…
(Java) Static member accessed via instance reference with enumerators
I just started learning Java. IntelliJ is giving me a warning “Static member accessed via instance reference” on line 4. Is it bad, should I fix it, somehow, or should I just ignore it? Here is my code: and the Dog class: Answer One issue (which causes others) is that you’re hiding the type …
Java OOP; creating array of objects
I’d like to create an array of objects where 3 objects are from one class, and a 4th is from second class. In the first class I did the following: in the second class I did the following: In the main class, I created several pupil objects and one tutor object, like this: Using objects for printing in ma…
Flink ElasticsearchSinkFunction not serializable in non-static method, but serializable in static method
I have a piece of code that only works inside static methods. If I put the code in a static method, then call it from a non-static method, it works. Never heard of anything like this and couldn’t find information online on it. This works: This doesn’t work: (Full) stack trace: The implementation o…
Can Functional Interfaces with generic type be stored in a static map?
I have used a static map to store a series of Functional Interfaces which associated with three classes A, B and C all inherited from a parent class. The code runs smoothly as follow: However, there is a warning “Raw use of parameterized class ‘BiConsumer’” on the usage of Biconsumer in the …
How to assign values to Attributes by passing argument using from method?
I need to assign YEAR, MONTH, DAY attributes to values just only using one set method. therefore I pass DATE.YEAR, DATE.MONTH, DATE.DATE as an argument also with values by calling set method line by line. You can make changes anything to the set method. But You cannot make changes to the main method. Answer M…
Using static methods with Spring Security to get current user details
I have a requirement to get the details of the current user who has been loggedIn. To get the details, we can use the SecurityContextHolder.getContext() and extract the details. According to, SecurityContextHolder, SecurityContext and Authentication Objects By default, the SecurityContextHolder uses a ThreadL…