https://www.pistack.xyz/tags/collections-framework/ Recent content in Collections-Framework on Pi Stack Hugo en-us Thu, 13 Aug 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-08-13-java-collections-libraries-eclipse-collections-fastutil-hppc/ Thu, 13 Aug 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-08-13-java-collections-libraries-eclipse-collections-fastutil-hppc/ <p>Every Java developer hits the same wall sooner or later: <code>ArrayList&lt;Integer&gt;</code> boxes every single <code>int</code> into an <code>Integer</code> object, bloating memory by 3–5x and turning simple loops into garbage-collection churn. In 2026, with memory prices flat and CPU cores plentiful, the three libraries that fix this — <strong>Eclipse Collections, fastutil, and HPPC</strong> — are more relevant than ever, yet most teams still don&rsquo;t use any of them. Here is the honest, benchmark-backed breakdown of which one you should adopt.</p>