> For the complete documentation index, see [llms.txt](https://byulseop-til.gitbook.io/sinheeseop_til/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://byulseop-til.gitbook.io/sinheeseop_til/java/qna/concepts.md).

# Concepts - 개념 관련 질문

- [JVMQuestions](https://byulseop-til.gitbook.io/sinheeseop_til/java/qna/concepts/jvm_questions.md)
- [WhyChildTypeCannotReferenceParentType](https://byulseop-til.gitbook.io/sinheeseop_til/java/qna/concepts/why_child_cannot_reference_parent.md)
- [Interface vs Abstract Class](https://byulseop-til.gitbook.io/sinheeseop_til/java/qna/concepts/interface_vs_abstract.md)