CODEWITHSUNDEEP
javainheritancejpanel
Ungeheuer
Ungeheuer

Reputation: 1443

JPanel API: Inheritance

So I was reading the JPanel API and saw the fields about inherited methods for example, and I saw three boxes of methods that JPanel inherits. Now, knowing what I learned the first week of the Comp. Sci. intro class, JPanel can only inherit methods from its superclass, so then how does JPanel seem to have three superclasses? Am I reading this wrong, if so, how does JPanel inherit from three different classes? Note, there are four boxes of inherited methods, but I know that everything descends from Object, so I got that, what I don't understand is how JPanel can also be the subclass of the other three classes listed preceding Object.

Again, probably the stupidest question to ever be asked, but I'm very confused.

Upvotes: 1

Views: 159

Answers (1)

camickr
camickr

Reputation: 324127

  1. JPanel inherits from JComponent
  2. JComponent inherits from Container
  3. Container inherits from Component
  4. Component inherits from Object

So yes, JPanel inherits the methods from JComponent, Container, Component and Object.

This is the basis of inheritance. Start with the Java tutorial on Object Oriented Programming Concepts.

Upvotes: 3

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