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Java Class Q&A » Super » Object 

1. Object class as super class in Java    stackoverflow.com

Why is object class the super class in Java?

2. Java Object superclass    stackoverflow.com

I have a weird Java question: As we know:

  1. All Java classes extend java.lang.Object
  2. All Java classes cannot extend itself
Then, java.lang.Object must extend java.lang.Object, which is itself, therefore, it should be impossible. How is ...

3. super class objects.    coderanch.com

If I have a subclass which extends a superclass,and then if i want to instantiate the subclass then the costructors of the all the super classes upto the hierarchy "Object" class are called implicitly or explicitly as we all know. But my question is are objects(may be anonymous) of all those super classes are created at that time i.e on instatiating ...

4. Why is the superclass named as 'Object'    coderanch.com

It ts very good question and must be ansarable.Every class extends Object class Because of 2 resion,one is for security resion & other for utilities purpose.If a class Extends Object class ,then after jvm,cosider this program is secure program(thats the only way that jvm know program compile by bug free compiler or bug compiler).Other is about the utilites,thats G.C,&other functionalites.

5. override a method in object retruned from super class    coderanch.com

customMenuComponent.addCustomLink(new CustomLinkComponenet("strlink","Storage Inbox",Index.class) { protected BookmarkablePageLink getBookmarkablePageLink() { BookmarkablePageLink bookmarkablePageLink= new BookmarkablePageLink("link",clazz){ protected void onBeforeRender() { super.onBeforeRender(); } }; return bookmarkablePageLink; } }); customMenuComponent.addCustomLink(new CustomLinkComponenet("strlink","Storage Inbox",Index.class) { protected BookmarkablePageLink getBookmarkablePageLink() { BookmarkablePageLink bookmarkablePageLink= super.getBookmarkablePageLink(){ protected void onBeforeRender() { super.onBeforeRender(); } }; return bookmarkablePageLink; } }); the second block of code does not compile please explain me why and what is the ...

6. Why Superclass of all classes is named as Object    coderanch.com

Well, in java is an object oriented language. Data and business processes are encapsulated in entities called as objects. The primitive data types are pretty much used directly only by the programmer in developing coding logic. Hence objects form the foundation over which everything in java executes. In order to impart some generic properties to these objects we have the class ...

8. Pass derived object into method wanting superclass ...    java-forums.org

If you want to implement an interface then you MUST implement the abstract methods of that interface. So your distance method in the DistributionalDistance class must have parameters of type Seq. Elsewhere in your code where you call the distance method and you pass it QSeq objects all will be fine if Qseq class extends Seq.

9. override a method in object retruned from super class    forums.oracle.com

my base class has method which the subclass wants to override , this method returns an object , the sub class wants to override a method on object retruned by super. protected class CustomLinkComponenet extends Fragment { String displayName; Class clazz; public CustomLinkComponenet(String id,String displayName, Class clazz) { super(id,"customlink",Index.this); this.displayName=displayName; this.clazz=clazz; BookmarkablePageLink bookmarkablePageLink= getBookmarkablePageLink(); add(bookmarkablePageLink); bookmarkablePageLink.add(getDisplayNameLabel()); } protected BookmarkablePageLink getBookmarkablePageLink(){ return ...

11. Object as Superclass    forums.oracle.com

12. Object superclass    forums.oracle.com

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