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Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 16, 2026 · Backend Development

14 Advanced Java Collection Tricks to Write Cleaner Code

This article presents fourteen practical Java collection techniques—ranging from creating immutable and empty collections to using computeIfAbsent, Map.merge, Collectors.groupingBy, and EnumMap/EnumSet—each illustrated with concise code snippets and explanations that improve readability, safety, and performance in Spring Boot applications.

CollectionsEnumMapJava 9
0 likes · 9 min read
14 Advanced Java Collection Tricks to Write Cleaner Code
Top Architect
Top Architect
Jan 4, 2025 · Backend Development

A Comprehensive Guide to Java Enums: Basics, Advanced Techniques, and Design Patterns

This article explains what Java enums are, why they are preferable to constants, demonstrates basic and custom enum definitions, shows how to compare, switch, and extend enums with properties, methods and constructors, and explores advanced uses such as EnumSet, EnumMap, Singleton and Strategy patterns, including Java 8 stream examples and JSON serialization.

Design PatternsEnumMapEnumSet
0 likes · 16 min read
A Comprehensive Guide to Java Enums: Basics, Advanced Techniques, and Design Patterns
Java Backend Technology
Java Backend Technology
Jul 22, 2021 · Fundamentals

Master Java Enums: From Basics to Advanced Design Patterns

This article explains Java enums, their advantages over constants, demonstrates custom methods, comparisons, switch usage, advanced features like EnumSet, EnumMap, JSON serialization, and shows how enums can implement design patterns such as Singleton and Strategy with complete code examples.

Design PatternsEnumMapEnumSet
0 likes · 14 min read
Master Java Enums: From Basics to Advanced Design Patterns
Java Backend Technology
Java Backend Technology
Mar 26, 2020 · Fundamentals

Mastering Java Enums: From Basics to Advanced Design Patterns

This article explains what Java enums are, why they are useful, how to define simple and custom enum types, compare them safely, use them in switch statements, enrich them with fields, methods and constructors, and apply them in advanced scenarios such as EnumSet, EnumMap, Singleton and Strategy patterns, as well as Java 8 stream APIs and JSON serialization.

EnumMapEnumSetEnums
0 likes · 17 min read
Mastering Java Enums: From Basics to Advanced Design Patterns