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Blog postings by Andrew Cowie about Open Source and Software Development
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blogs > andrew > software > objective > performance-tips-java
Wed, 21 Dec 2005
Performance tips for Java
I recently came across a scenario where the persistence library I’m using indicated that its out-of-band query mechanism would work even better if I had strongly typed arrays instead of Java Collections. More about that later, but whilst searching the net looking for information about a Hobbit[] array versus (say) an ArrayList of them, I stumbled across a neat paper called 30 ways to improve the performance of your Java Programs. There’s a PDF there you can download. The paper is a few years old but still a good reminder of some of the underlying things that go on in Java.
As ever, though, performance is particular to application architecture, nature of your data, and the algorithms you’re using. The author clearly notes that such issues will dominate and the only true way to make performance optimizations is to test alternatives out in your environment.
AfC
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