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Technical Articles

Java

javaTutorial

Solve the problem that FXML files cannot be loaded after JavaFX application packages JAR

This tutorial is intended to solve the common problem that a JavaFX application fails to load correctly after it is packaged as a JAR file. The article will provide detailed guidance on how to adjust the Artifact configuration of IntelliJ IDEA, ensure that the FXML file in the src/main/resources directory is correctly included in the JAR package, and correct the resource path reference in the FXML loader, changing from the relative path to the absolute path based on the classpath root, thereby ensuring that the application runs normally in an independent JAR environment.

Aug 31, 2025 am 11:42 AM

Efficiently remove punctuation marks from text files using Java

This article details how to efficiently remove punctuation marks from text file content in Java. By leveraging Java NIO's Files.lines streaming and regular expression\\p{Punct}, text cleaning can be achieved concisely and efficiently, ensuring pure text data output. The tutorial contains sample code and parsing of key technical points, which is suitable for Java developers who need text preprocessing.

Aug 31, 2025 am 11:12 AM

Java application dependency deployment strategy: from JAR package to OS native installation

This article explores efficient deployment strategies for Java applications and their external dependencies on the server. From common Uber JAR and detached JAR deployments, to recommended ZIP package bundling, WAR package deployment for web applications, to using JPackage to implement OS native installation packages, we will introduce the characteristics, applicable scenarios and dependency upgrade processing methods of various methods in detail, aiming to provide a safe and convenient deployment solution.

Aug 31, 2025 am 11:00 AM

Solution to the problem of JavaFX nested controller empty

This article aims to solve the problem of failure of nested controller injection in JavaFX development. By analyzing the correspondence between the fx:id attribute of the FXML file and the field name in the controller class, it explains in detail how to correctly configure the nested controller to avoid null pointer exceptions. The article provides specific code examples to help developers understand and apply correct naming rules, thereby achieving effective reuse of components and decoupling of interface logic.

Aug 31, 2025 am 10:54 AM

Challenges and solutions for Sybase stored procedures to generate unique IDs: In-depth understanding of transaction isolation and atomic operations

This article discusses the common problem of duplicate values ??when stored procedures in Sybase databases generate self-increment IDs. Although the application layer sets the SERIALIZABLE transaction isolation level, race conditions may still be triggered if explicit transaction management is lacking in stored procedures or atomic operations are not adopted. The tutorial will analyze the root cause of the problem in detail and provide two effective solutions: explicitly declare transactions within stored procedures, and optimize ID generation logic through atomic update statements, while exploring Sybase-specific locking mechanisms to ensure the uniqueness and system stability of IDs in high concurrency environments.

Aug 31, 2025 am 10:48 AM

Dynamically configure Spring Boot application properties based on database

This article aims to provide a solution that allows Spring Boot applications to dynamically load and configure properties from the database, thereby avoiding the need to restart the server every time the configuration is modified. By customizing PropertySource, we can integrate configuration items in the database into Spring's property management system to achieve dynamic updates and management of configurations.

Aug 31, 2025 am 10:45 AM

Simulation and implementation of Fn key operation in Selenium (Java)

In Selenium (Java) automation testing, there are challenges in direct simulation of Fn (function) key operations. This article provides an effective solution: use Selenium's Keys.chord() method to combine the Fn key with other keys to indirectly realize the function of the Fn key. The article will guide developers how to successfully simulate the Fn key in automated scripts through detailed sample code and precautions to ensure the accuracy and completeness of the test.

Aug 31, 2025 am 10:39 AM

Java Tutorial: Master ArrayList reference transfer to prevent accidental data modification

In Java, when passing ArrayList as a parameter to a newly created object, improper processing may cause unexpected data modification. This article will dig into this common question, explaining why sharing the same ArrayList reference causes data to affect each other, and provides a simple and effective solution: create independent ArrayList instances for each new object, ensuring data isolation and stability.

Aug 31, 2025 am 10:24 AM

Convert strings in Java or Groovy to JSON objects

This article describes how to convert strings of a specific format into JSON objects in Java or Groovy. Since this string is not a standard JSON format, a custom parser is required to implement the conversion. This article will provide a custom parsing solution to help developers extract key-value pairs to achieve the purpose of converting strings in specific formats into actionable JSON data.

Aug 31, 2025 am 10:21 AM

Efficiently compare specific properties in Java list: HashMap optimization solution

This article aims to provide a better Java list attribute comparison method to avoid the inefficiency of traditional double loops. By constructing elements of the second list into a HashMap by specific attributes (such as IDs), quick searches can be implemented, thereby efficiently assigning attribute values ??from the second list to elements with the same attribute values ??in the first list. This article will introduce in detail how to use HashMap to optimize list attribute comparison, and provide code examples and considerations.

Aug 31, 2025 am 10:09 AM

How to correctly compare whether dates are equal?

Date comparison is a common problem when doing system migration or integration. This article provides a simple and effective date comparison method. By extracting key information in the date string and comparing it, complex date object conversion can be avoided. At the same time, it emphasizes the importance of system testing in verifying the logical correctness of date comparison, ensuring that the migrated system remains consistent with the original system.

Aug 31, 2025 am 09:39 AM

Extract key-value pairs from JSONArray collection in Java and merge them into one JSONArray

This article describes how to use Java to process two JSONArrays containing key-value pairs and merge them into a new JSONArray based on the associated key ("id") between them. By traversing the JSONArray, extracting the value of the specified key, and using the Map data structure to store and merge JSONObjects, finally generating a JSONArray containing the merged key-value pairs.

Aug 31, 2025 am 09:27 AM

Java Comparator: Implementing multi-priority and multi-field complex sorting logic

This article explores in depth how to use the Comparator interface to implement complex multi-priority and multi-field sorting logic in Java. For scenarios where you need to sort according to a specific type order (such as "Artist" takes precedence over "Producer") and additional fields (such as name), the article proposes two core solutions: enumeration-based priority management and Map-based priority mapping. With detailed code examples and best practices, readers will learn how to elegantly build maintainable, extensible composite sorters to ensure data is rendered accurately according to preset rules.

Aug 31, 2025 am 09:15 AM

Implement complex sorting logic using Java Comparator

This article describes how to use Java Comparator to sort Actor lists, where Actors have types (such as "Artist", "Producer", "Mixer", etc.) and names. The sorting rules are: first sort by type priority ("Artist" first, then "Producer", followed by "Mixer"), and secondly, alphabetical order of Actor names. The article provides two implementation methods: use enumeration type to determine

Aug 31, 2025 am 09:12 AM