https://dhanoopbhaskar.github.io/tags/spring/ Recent content in Spring on The Insane Techie Hugo en Wed, 01 Jul 2026 14:10:00 +0530 https://dhanoopbhaskar.github.io/posts/2026-07-01-java-spring-refresher/ Wed, 01 Jul 2026 14:10:00 +0530 https://dhanoopbhaskar.github.io/posts/2026-07-01-java-spring-refresher/ <h1 id="1-java-core-language"> 1. Java Core Language <a class="heading-link" href="#1-java-core-language"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h1> <h2 id="11-interface-default--private-methods"> 1.1 Interface Default &amp; Private Methods <a class="heading-link" href="#11-interface-default--private-methods"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h2> <p><strong>Backward Compatibility</strong>: The <code>default</code> method feature was introduced in Java 8 to allow developers to safely append new methods to existing interfaces without breaking legacy code or modifying implementing classes.</p> <p><strong>Private Methods (Java 9)</strong>: Introduced explicitly to eliminate redundant, duplicated logic inside multiple <code>default</code> methods by encapsulating shared routines locally inside the interface body.</p>