Introduction Programming languages provide us with a diverse range of features and capabilities, influencing the way we design, write, and think about code. One crucial aspect of this is how a language handles null or non-existent values. Null safety is… Read More »Null Safety in Programming Languages
The Apache Commons Byte Code Engineering Library (BCEL) is a powerful tool for the analysis, creation, and manipulation of Java class files. It provides Java developers with an API that enables the inspection of class files, bytecode creation, and even… Read More »Apache Commons BCEL: Getting Started
Managing configurations in a Java application can be quite a challenging task, particularly when you’re dealing with a large codebase or complex system architecture. Fortunately, the Apache Commons Configuration library simplifies this process, providing a way to handle configurations from various sources in a unified manner.
This article will explore how to use the Apache Commons Configuration library to manage configurations in a Java application.
Naming conventions make programs more understandable by making them easier to read. Following is a list of commonly used case styles.
| Item | Convention | Example |
| Class | Start with an uppercase letter. Use nouns for eg. User, Thread, Controller, Service, etc. | public class User |
| Interface | Start with an uppercase letter. Use adjectives such as Runnable, Handler, Listener. | interface Runnable |
| Method | Start with a lowercase letter. Use a verb such as print(), login(), invoke() If the name contains multiple words, start with a lowercase letter followed by an uppercase letter such as calculateTax() | void invoke() |
| Variable | Start with a lowercase letter such as id, or name. Do not use special characters. If the name contains multiple words, start it with the lowercase letter followed by an uppercase letter. | int id; |
| Package | Lowercase letters such as java, lang. If the name contains multiple words, separate by dots (.) | package dev.ctrlshift; |
| Constant | Uppercase letters. In case of multiple words, separate by an underscore(_) such as LOG_FILE_SIZE | static final int LOG_FILE_SIZE = 18; |
| Item | Convention | Example |
| Class | Start each word with a capital letter (CamelCase) Do not separate words with underscores. | Model, MyClass |
| Method | Use a lowercase word or words. Separate words with underscores to improve readability. | class_method, method |
| Variable | Use a lowercase single letter, word, or words. Separate words with underscores to improve readability. | x, var, my_variable |
| Package | Use a short, lowercase word or words. Do not separate words with underscores. | package, mypackage |
| Constant | Use an uppercase single letter, word, or words. Separate words with underscores to improve readability. | MY_LONG_CONSTANT |
| Module | Use a short, lowercase word or words. Separate words with underscores to improve readability. | my_module.py |