Call the setsize of the inherit only

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I have the following example code
Public class A extends JFrame{

public A()
{
setSIze(500,500);
}
}

Public class B extends A{

public B()
{

setSIze(200,200);
}
}

If i instantiate B it will first call A
So it will setSize(500,500)
Then it will setSize(200,200)

Is there a way (without parameters)
To call setSize of B only?
Thank you

What I have tried:

I didnt try anything yet because i dont know how to do it

Posted 13-Jan-21 8:18am

Member 11296776

Updated 13-Jan-21 8:36am

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Richard MacCutchan 13-Jan-21 15:25pm

Take the setSIze call out of class A. It does mean that you will need to add something else for applications that use class A directly, but you do have to follow the rules.

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OriginalGriff · Accepted Answer · 2021-01-13T08:36:00

Solution 1

No. A class that extends a base class includes everything from the base as well as adding the new features - so the constructor of the base class is always automatically called before the constructor for the derived class, or the derived class would be unable to use anything from it's base and that would make the whole thing unusable.

Posted 13-Jan-21 8:36am

OriginalGriff

Comments

Member 11296776 13-Jan-21 14:41pm

Thank you for replying
Is there a way to call setSize
Maybe declare height and width variables in A and remove the setSize from B just set the required values for each class?

OriginalGriff 13-Jan-21 15:16pm

The A constructor is called before the B constructor - always - so you can't do anything that would affect it from the B instance creation code.