基于 Commons Collections 链学习的 Java 反序列化漏洞靶场，包含 18 个渐进式挑战模块。

SMSFlow provides a simple and secure REST API that allows developers to send SMS messages directly from Java applications. Whether you are building notification systems, marketing platforms, customer ...

Stable implementation with almost 1,700 tests and enforced 100% test code coverage. Every single method, statement and conditional branch variant in the entire codebase is tested and required to pass ...

🧠 Day 19: Serialization and Deserialization in Java Serialization is one of the most powerful concepts in Java’s I/O system — it allows you to save the state of an object and retrieve it later --- 📘 ...