KwickClips Java · 39 sec · free
What does extends do?
Short answer. It makes a child class that receives the parent's fields and methods.
When should you use inheritance?
Only when the child is a kind of the parent, like a Dog is an Animal.
Remember
| extends: child gets parent code |
| Child IS A kind of parent |
Why rewrite code that a parent class already has? Student extends Person. Student is empty, yet it gets the hi method. Student is the child, Person the parent. Extends gives parent code to the child. The child is a kind of parent.
This clip is from the full lesson: Inheritance in Java: extends, super and Method Overriding — 8 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 10 Computer Applications (165), ICSE Class 9 Computer Applications, ISC Class 12 Computer Science (868), ISC Class 12 Computer Science (868)
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Can a class have two parents?40 secDisclaimer. KwickAcademy is free study material for general learning and revision. Parts of it, including the voice-over, are produced with the help of AI tools and may contain errors; if you spot one, please tell us and we will correct it. Syllabus, marks and exam details follow the latest official board publications available to us, and boards can change them at any time, so always confirm against your board's official website and your school. Using this material does not guarantee any marks or result. Board names and trademarks belong to their owners; Kwickprep is not affiliated with or endorsed by any examination board. We never ask for passwords, OTPs or ID numbers. Your progress is saved only in this browser. Full disclaimer · Privacy