> For the complete documentation index, see [llms.txt](https://gyansetu-java.gitbook.io/core-java/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gyansetu-java.gitbook.io/core-java/object-oriented-design-principles.md).

# 28) Object-oriented design principles

![](https://3494582050-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LSemf7mp1liQa7nfIAC%2F-LV1yyNFFZkKAbFRf7U9%2F-LV1z5QKBwFOtIiNkhVQ%2Fimage.png?alt=media\&token=025e8a0a-2f4e-44c4-bc9b-01f651583336)