Java
javaTutorial
Naming of packages and classes -- introduction to the differences between service tool util
Naming of packages and classes -- introduction to the differences between service tool util
Service tool util is often confused when naming and positioning packages and classes. Let’s analyze their positioning here:
| Name | Features and positioning | Independence | Methods and class attributes | |
| util | It is universal and has nothing to do with business. It can be independent and can be used by other projects. | Does not call any business-related classes | Methods are usually public static and generally have classless attributes. If there are any, they are also public static. | |
| tool | is related to certain businesses and has limited versatility. Between several business classes | To call certain business-related classes | methods are usually public static, and generally have no class attributes. If there are, they are also public static | |
| service | Related to a certain business, not universal | To call certain business-related classes | methods are usually public, It is usually called through an interface, which generally has public class attributes. You need to use new | |
The above is the detailed content of Naming of packages and classes -- introduction to the differences between service tool util. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1359
52
What exchange is Nexo? Is Nexo exchange safe?
Mar 05, 2025 pm 07:39 PM
Nexo: Not only is it a cryptocurrency exchange, but also your digital financial manager. Nexo is not a traditional cryptocurrency exchange, but a financial platform that focuses more on cryptocurrency lending. It allows users to obtain loans in cryptocurrency as collateral and provides services to earn interest. While Nexo also offers cryptocurrency buying, selling and redemption capabilities, its core business is crypto lending. This article will explore the operating model and security of Nexo in depth to provide investors with a more comprehensive understanding. Nexo's operating model was founded in 2018 and is headquartered in Zug, Switzerland, and is a pioneer in the field of digital finance. It is different from other centralized exchanges and focuses more on providing comprehensive financial services. Users can buy, sell, trade cryptocurrencies without selling assets and
Is there any difference between South Korean Bitcoin and domestic Bitcoin?
Mar 05, 2025 pm 06:51 PM
The Bitcoin investment boom continues to heat up. As the world's first decentralized digital asset, Bitcoin has attracted much attention on its decentralization and global liquidity. Although China was once the largest market for Bitcoin, policy impacts have led to transaction restrictions. Today, South Korea has become one of the major Bitcoin markets in the world, causing investors to question the differences between it and its domestic Bitcoin. This article will conduct in-depth analysis of the differences between the Bitcoin markets of the two countries. Analysis of the differences between South Korea and China Bitcoin markets. The main differences between South Korea and China’s Bitcoin markets are reflected in prices, market supply and demand, exchange rates, regulatory supervision, market liquidity and trading platforms. Price difference: South Korea’s Bitcoin price is usually higher than China, and this phenomenon is called “Kimchi Premium.” For example, in late October 2024, the price of Bitcoin in South Korea was once
The difference between multithreading and asynchronous c#
Apr 03, 2025 pm 02:57 PM
The difference between multithreading and asynchronous is that multithreading executes multiple threads at the same time, while asynchronously performs operations without blocking the current thread. Multithreading is used for compute-intensive tasks, while asynchronously is used for user interaction. The advantage of multi-threading is to improve computing performance, while the advantage of asynchronous is to not block UI threads. Choosing multithreading or asynchronous depends on the nature of the task: Computation-intensive tasks use multithreading, tasks that interact with external resources and need to keep UI responsiveness use asynchronous.
The difference between Ether and Bitcoin What is the difference between Ether and Bitcoin
Mar 19, 2025 pm 04:54 PM
The difference between Ethereum and Bitcoin is significant. Technically, Bitcoin uses PoW, and Ether has shifted from PoW to PoS. Trading speed is slow for Bitcoin and Ethereum is fast. In application scenarios, Bitcoin focuses on payment storage, while Ether supports smart contracts and DApps. In terms of issuance, the total amount of Bitcoin is 21 million, and there is no fixed total amount of Ether coins. Each security challenge is available. In terms of market value, Bitcoin ranks first, and the price fluctuations of both are large, but due to different characteristics, the price trend of Ethereum is unique.
What is the function of C language sum?
Apr 03, 2025 pm 02:21 PM
There is no built-in sum function in C language, so it needs to be written by yourself. Sum can be achieved by traversing the array and accumulating elements: Loop version: Sum is calculated using for loop and array length. Pointer version: Use pointers to point to array elements, and efficient summing is achieved through self-increment pointers. Dynamically allocate array version: Dynamically allocate arrays and manage memory yourself, ensuring that allocated memory is freed to prevent memory leaks.
What is the difference between bean bread and deepseek
Mar 12, 2025 pm 01:24 PM
The core difference between bean bun and DeepSeek is retrieval accuracy and complexity. 1. Doubao is based on keyword matching, simple and direct, with low cost, but low accuracy, and is only suitable for structured data; 2. DeepSeek is based on deep learning, can understand semantics, has high accuracy, but high cost, and is suitable for unstructured data. The final choice depends on the application scenario and resource limitations. If the accuracy requirements are not high, choose bean bags, and if you pursue high precision, choose DeepSeek.
The difference between char and wchar_t in C language
Apr 03, 2025 pm 03:09 PM
In C language, the main difference between char and wchar_t is character encoding: char uses ASCII or extends ASCII, wchar_t uses Unicode; char takes up 1-2 bytes, wchar_t takes up 2-4 bytes; char is suitable for English text, wchar_t is suitable for multilingual text; char is widely supported, wchar_t depends on whether the compiler and operating system support Unicode; char is limited in character range, wchar_t has a larger character range, and special functions are used for arithmetic operations.
Crypto investment mentality is very important! How to avoid unnecessary worries and make correct decisions?
Mar 05, 2025 pm 07:24 PM
Fear, uncertainty and doubt of crypto investment: How to make informed decisions? Many crypto investors face fears of “this is the last cycle”, as well as concerns about the duration of the bull market, coupled with pressure from others, which together lead to poor investment decisions. This article will explore how to overcome these challenges and make smarter investment choices. Potential risk: Distraction: Blindly chase hot spots and ignore the value of core assets. Pessimism and hesitation: Uncertainty leads to lack of confidence, inability to hold for a long time, and even exit from the market. Lack of belief: Lack of in-depth research on projects and cannot cope with market volatility. Lack of profit-making strategies: clearing positions early due to fear of pullbacks, missing potential returns. Coping strategies: 1. Focus on core areas:
