Category Archive for "Class"

What does "Could not find or load main class" mean?

A common problem that new Java developers experience is that their programs fail to run with the error message: Could not find or load main class .... This error message is particu...

How can I access an array/object in PHP?

If you have an array or an object and you want to access its values, you can use different methods depending on the structure and type of the data. In this article, we will discuss...

What is the purpose of the `self` parameter? Why is it needed?

The self parameter in Python is used to reference the instance of a class within its own methods. It is a convention in Python to use self as the first parameter name, but you can...

How to Avoid Having Class Data Shared Among Instances?

When working with classes in programming languages like Python, it's important to understand how data is shared among instances. By default, class data is shared amon...