CODEWITHSUNDEEP
javaoverridingabstract-class
Kamil Lelonek
Kamil Lelonek

Reputation: 14744

Avoid overriding all abstract methods in Java

I wonder if there is any way to avoid unnecessary methods from implemented interface or other class.
Let say that I have simple class implementing MouseListener, when actually I need only one method mousePressed( MouseEvent e) to override. However, in that case I also have to override every other method from interface but keep them empty like that:

public void mouseExited( MouseEvent e) {}
public void mouseClicked( MouseEvent e) {}
public void mouseReleased( MouseEvent e) {}
public void mouseEntered( MouseEvent e) {}

Is there any tricky solution to override only method I really need even when the others are abstract in interface/superclass and still keep my class as non-abstract?

Upvotes: 2

Views: 1857

Answers (2)

Jean-Christophe Blanchard
Jean-Christophe Blanchard

Reputation: 438

The solution of JB Nizet is good but by the way why it is a problem ? with modern IDE like Eclipse you can add all methods to implement with just one click (source > override/implement method). If you use an adapter it's practical but you can't extend another class than the adapter.

Upvotes: 1

JB Nizet
JB Nizet

Reputation: 691635

Extend MouseAdapter. It implements MouseListener by doing nothing for every method. So you can just override the one that you want.

Upvotes: 8

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