What are the performance benchmarks for Java collections?
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What are the performance benchmarks for Java collections?
Java collections have different performance characteristics. For example, ArrayList has O(1) for access but O(n) for insertion.
How does HashMap compare to TreeMap in terms of performance?
HashMap offers O(1) average time complexity for get and put operations, while TreeMap has O(log n) due to its sorted nature.
Are there any specific benchmarks I should look at for large datasets?
Yes, benchmarks like JMH (Java Microbenchmark Harness) can help you measure performance for large datasets effectively.
Can you provide examples of when to use each collection type?
Sure! Use ArrayList for dynamic arrays, HashMap for key-value pairs, and TreeSet for sorted unique elements.
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