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Class hierarchy
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<h2 id="see-also">See also</h2> <ul><li><a href="/facts/Multiple_inheritance/kFvNb9rY">Multiple inheritance</a></li> <li><a href="/facts/Composition_over_inheritance/KBF2DslL">Composition over inheritance</a></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>"OOP: Class Hierarchy". staff.fnwi.uva.nl. Retrieved 2017-10-11. <a href="https://staff.fnwi.uva.nl/a.j.p.heck/Courses/JAVAcourse/ch3/s1.html" target="_blank">https://staff.fnwi.uva.nl/a.j.p.heck/Courses/JAVAcourse/ch3/s1.html</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>"OOP: Class Hierarchy". staff.fnwi.uva.nl. Retrieved 2017-10-11. <a href="https://staff.fnwi.uva.nl/a.j.p.heck/Courses/JAVAcourse/ch3/s1.html" target="_blank">https://staff.fnwi.uva.nl/a.j.p.heck/Courses/JAVAcourse/ch3/s1.html</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> </ol>