> For the complete documentation index, see [llms.txt](https://java.4-x.tw/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://java.4-x.tw/java-12.md).

# 第12章：抽象類別

- [認識抽象類別](https://java.4-x.tw/java-12/java-12-1.md)
- [範例：抽象類別](https://java.4-x.tw/java-12/java-12-2.md)
- [使用抽象類別型態的變數建立物件](https://java.4-x.tw/java-12/java-12-3.md)