“Integer number too large” error message for 600851475143
When the code above is run, it produces an error on the line obj.function(600851475143);. Why?
Java
Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?
Because interfaces specify only what the class is doing, not how it is doing it. The problem with multiple inheritance is that two classes may define different ways of doing the same thing, and the subclass can’t choose which one to pick.
How to write a test class to test my code?
4 I want a test class to test this class but i dont know how to write it and i tried to see online but i still couldnt figure it out.I wrote the code on BlueJ, i’m trying to create the set game.
Java Main Game Loop
Eventually you’ll want to move to something like LWJGL, but let me stress, keep doing what you’re doing here for now. It will teach you fundamentals. Good job on your loop. Looks nice, let me offer a few pointers: Repaint will not render the screen immediately. It tells the RepaintManager to render when its ready. … Read more
JsonMappingException: No suitable constructor found for type [simple type, class ]: can not instantiate from JSON object
So, finally I realized what the problem is. It is not a Jackson configuration issue as I doubted. Actually the problem was in ApplesDO Class: There was a custom constructor defined for the class making it the default constructor. Introducing a dummy constructor has made the error to go away:
Android – Start service on boot
Well here is a complete example of an AutoStart Application AndroidManifest file autostart.java service.java hello.java – This will pop-up everytime you start the device after executing the Applicaton once.
Why use getters and setters/accessors?
There are actually many good reasons to consider using accessors rather than directly exposing fields of a class – beyond just the argument of encapsulation and making future changes easier. Here are the some of the reasons I am aware of: Encapsulation of behavior associated with getting or setting the property – this allows additional functionality (like validation) … Read more
Jackson with JSON: Unrecognized field, not marked as ignorable
I need to convert a certain JSON string to a Java object. I am using Jackson for JSON handling. I have no control over the input JSON (I read from a web service). This is my input JSON: Here is a simplified use case: My entity class is: My Wrapper class is basically a container … Read more
How to Delete a topic in apache kafka [duplicate]
Deletion of a topic has been supported since 0.8.2.x version. You have to enable topic deletion (setting delete.topic.enable to true) on all brokers first. Note: Ever since 1.0.x, the functionality being stable, delete.topic.enable is by default true. Follow this step by step process for manual deletion of topics Stop Kafka server Delete the topic directory, … Read more
What is the proper annotation since @SpringApplicationConfiguration, @WebIntegration, is deprecated in Spring Boot Framework?
Take a look into JavaDocs of deprecated classes: Is there also a replacement for TestRestTemplate()? Yes, here it is: