https://github.com/jdereg/java-util
Rare, hard-to-write utilities that are thoroughly tested
https://github.com/jdereg/java-util
Last synced: 19 days ago
JSON representation
Rare, hard-to-write utilities that are thoroughly tested
- Host: GitHub
- URL: https://github.com/jdereg/java-util
- Owner: jdereg
- License: apache-2.0
- Created: 2013-09-07T19:52:43.000Z (over 11 years ago)
- Default Branch: master
- Last Pushed: 2025-03-26T16:18:34.000Z (about 1 month ago)
- Last Synced: 2025-04-03T01:41:48.959Z (26 days ago)
- Language: Java
- Homepage:
- Size: 8.02 MB
- Stars: 424
- Watchers: 46
- Forks: 109
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- Changelog: changelog.md
- License: LICENSE
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- awesome-ccamel - jdereg/java-util - Rare, hard-to-write utilities that are thoroughly tested (Java)
README
java-util
=========
[](https://central.sonatype.com/search?q=java-util&namespace=com.cedarsoftware)
[](http://www.javadoc.io/doc/com.cedarsoftware/java-util)
A collection of high-performance Java utilities designed to enhance standard Java functionality. These utilities focus on:
- Memory efficiency and performance optimization
- Thread-safety and concurrent operations
- Enhanced collection implementations
- Simplified common programming tasks
- Deep object graph operations
Available on [Maven Central](https://central.sonatype.com/search?q=java-util&namespace=com.cedarsoftware).
This library has no dependencies on other libraries for runtime.
The`.jar`file is `450K` and works with `JDK 1.8` through `JDK 23`.
The `.jar` file classes are version 52 `(JDK 1.8)`
## Compatibility
### JPMS (Java Platform Module System)
This library is fully compatible with JPMS, commonly known as Java Modules. It includes a `module-info.class` file that
specifies module dependencies and exports.
### OSGi
This library also supports OSGi environments. It comes with pre-configured OSGi metadata in the `MANIFEST.MF` file, ensuring easy integration into any OSGi-based application.
Both of these features ensure that our library can be seamlessly integrated into modular Java applications, providing robust dependency management and encapsulation.
---
To include in your project:
##### Gradle
```groovy
implementation 'com.cedarsoftware:java-util:3.3.0'
```
##### Maven
```xml
com.cedarsoftware
java-util
3.3.0
```
---
# java-util
### Sets
- **[CompactSet](userguide.md#compactset)** - Memory-efficient Set that dynamically adapts its storage structure based on size
- **[CaseInsensitiveSet](userguide.md#caseinsensitiveset)** - Set implementation with case-insensitive String handling
- **[ConcurrentSet](userguide.md#concurrentset)** - Thread-safe Set supporting null elements
- **[ConcurrentNavigableSetNullSafe](userguide.md#concurrentnavigablesetnullsafe)** - Thread-safe NavigableSet supporting null elements
- **[ClassValueSet](userguide.md#classvalueset)** - High-performance Set optimized for fast Class membership testing using JVM-optimized ClassValue
### Maps
- **[CompactMap](userguide.md#compactmap)** - Memory-efficient Map that dynamically adapts its storage structure based on size
- **[CaseInsensitiveMap](userguide.md#caseinsensitivemap)** - Map implementation with case-insensitive String keys
- **[LRUCache](userguide.md#lrucache)** - Thread-safe Least Recently Used cache with configurable eviction strategies
- **[TTLCache](userguide.md#ttlcache)** - Thread-safe Time-To-Live cache with optional size limits
- **[TrackingMap](userguide.md#trackingmap)** - Map that monitors key access patterns for optimization
- **[ConcurrentHashMapNullSafe](userguide.md#concurrenthashmapnullsafe)** - Thread-safe HashMap supporting null keys and values
- **[ConcurrentNavigableMapNullSafe](userguide.md#concurrentnavigablemapnullsafe)** - Thread-safe NavigableMap supporting null keys and values
- **[ClassValueMap](userguide.md#classvaluemap)** - High-performance Map optimized for fast Class key lookups using JVM-optimized ClassValue
### Lists
- **[ConcurrentList](userguide.md#concurrentlist)** - Thread-safe List implementation with flexible wrapping options
### Utilities
- **[ArrayUtilities](userguide.md#arrayutilities)** - Comprehensive array manipulation operations
- **[ByteUtilities](userguide.md#byteutilities)** - Byte array and hexadecimal conversion utilities
- **[ClassUtilities](userguide.md#classutilities)** - Class relationship and reflection helper methods
- **[Converter](userguide.md#converter)** - Robust type conversion system
- **[DateUtilities](userguide.md#dateutilities)** - Advanced date parsing and manipulation
- **[DeepEquals](userguide.md#deepequals)** - Recursive object graph comparison
- **[EncryptionUtilities](userguide.md#encryptionutilities)** - Simplified encryption and checksum operations
- **[Executor](userguide.md#executor)** - Streamlined system command execution
- **[GraphComparator](userguide.md#graphcomparator)** - Object graph difference detection and synchronization
- **[IOUtilities](userguide.md#ioutilities)** - Enhanced I/O operations and streaming utilities
- **[MathUtilities](userguide.md#mathutilities)** - Extended mathematical operations
- **[ReflectionUtils](userguide.md#reflectionutils)** - Optimized reflection operations
- **[StringUtilities](userguide.md#stringutilities)** - Extended String manipulation operations
- **[SystemUtilities](userguide.md#systemutilities)** - System and environment interaction utilities
- **[Traverser](userguide.md#traverser)** - Configurable object graph traversal
- **[TypeUtilities](userguide.md#typeutilities)** - Advanced Java type introspection and generic resolution utilities
- **[UniqueIdGenerator](userguide.md#uniqueidgenerator)** - Distributed-safe unique identifier generation
[View detailed documentation](userguide.md)
See [changelog.md](/changelog.md) for revision history.
---
By: John DeRegnaucourt and Kenny Partlow