Eric Tech Circle

Jan 7, 2026 · Backend Development

Why IntelliJ IDEA 2025.3’s New Islands Theme and AI Features Matter for Java Developers

The article shares a seasoned Java developer’s hands‑on review of IntelliJ IDEA 2025.3, highlighting the new Islands theme, built‑in support for Spring Boot 4 and Java 25, full‑line code completion, and integration of the Claude Code AI plugin, while offering practical usage tips and personal recommendations.