Question 1

How to migrate from Trove to Koloboke?

Accepted Answer

Koloboke is designed as a modern alternative to Trove with better performance. Replace Trove factory methods with Koloboke equivalents, such as HashIntIntMaps for TIntIntHashMap, and update dependencies in your build configuration, as it offers similar primitive collections.

Question 2

Koloboke vs Java 8 Streams for performance?

Accepted Answer

Koloboke focuses on low-level collection efficiency for primitives, often outperforming Streams in raw operations. However, Streams provide higher-level abstractions for complex transformations, so choose based on whether you need micro-optimizations or readability.

Question 3

How to add Koloboke to a Maven project?

Accepted Answer

Add koloboke-api-jdk8 as a compile dependency and koloboke-impl-jdk8 as a runtime dependency in your pom.xml, as shown in the quick start. For Java 6 or 7, use the jdk6-7 artifacts instead.

Question 4

Does Koloboke support concurrent collections?

Accepted Answer

No, Koloboke does not include built-in concurrent collections like ConcurrentHashMap. You'll need to handle thread safety manually using synchronization or other concurrency tools with Koloboke maps.

Question 5

What memory savings can I expect with Koloboke?

Accepted Answer

By avoiding boxing, Koloboke collections can reduce memory usage by 50-70% for primitive types, depending on the data set. This is due to direct storage of primitives rather than objects, as emphasized in the performance gains.

Question 6

Is Koloboke actively maintained?

Accepted Answer

The project has a history of rebranding and updates, but check GitHub releases for recent activity. It supports modern Java versions, but community engagement may be limited compared to larger libraries like Guava.

Koloboke

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