Inner Class — 3 Technical Articles

Dec 28, 2025 · Fundamentals

Why Use Static Nested Classes in Java? Benefits and Real‑World Examples

This article explains Java's static nested classes, covering their definition, key characteristics, sample code for an e‑commerce order model, and common scenarios such as helper utilities, callbacks, singletons, and data‑structure encapsulation.

Inner ClassJavaObject-Oriented

0 likes · 6 min read

Why Use Static Nested Classes in Java? Benefits and Real‑World Examples

Java Tech Enthusiast

May 12, 2024 · Fundamentals

Why a Local ThreadPoolExecutor Can’t Be Garbage‑Collected: Java GC Roots Explained

The article explains why a locally created ThreadPoolExecutor cannot be reclaimed by Java's garbage collector, detailing GC root analysis, the role of live threads, inner‑class references, static versus non‑static nesting, and how these concepts can cause memory leaks.

Garbage CollectionInner ClassJava

0 likes · 16 min read

Why a Local ThreadPoolExecutor Can’t Be Garbage‑Collected: Java GC Roots Explained

Selected Java Interview Questions

Oct 6, 2022 · Backend Development

Understanding Java Inner Class Memory Leaks and How to Avoid Them

This article explains why non‑static inner classes in Java retain references to their outer class, causing memory leaks and eventual OutOfMemoryError, and demonstrates practical solutions such as avoiding references or converting the inner class to a static one, illustrated with code examples and debugging screenshots.

Garbage CollectionInner ClassMemory Leak

0 likes · 7 min read

Understanding Java Inner Class Memory Leaks and How to Avoid Them