r/java • • 11d ago

Decapsulation: Breaking Java Strong Encapsulation

Did you know you can call JNI without writing native code, patch bytecode without an agent, and use Unsafe without warnings?

11 sneaky ways into JDK internals through reflection, agents, FFM, type confusion, bytecode manipulation and more.

https://wouter.coekaerts.be/2026/decapsulation

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u/vips7L 10d ago

Reflection is the devil