Home/ Questions/Q 8562091
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-11T16:39:14+00:00

What is the best practice for changing an interface in an application. If the

  • 0

What is the best practice for changing an interface in an application. If the interface has been implemented by many Java classes, what would be the best way to change it? Are you going to extend to a new class? Are you going to use any design pattern? or do you use delegation (I don’t think there is any way using delegation)? Are you going to use deprecated annotation at all?

is this the best solution?

public interface interface1
{
}

public interface interface2 extends interface1
{
public void newMethod()
}
Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    There are two ways that immediately spring to mind.

    1. In your IDE, use a refactoring tool to change the interface. The more advanced IDE’s (Eclipse can – I don’t know about others) can refactor any known implementations immediately. This requires the affected projects to be open.
    2. Your solution, MyInterface2 extends MyInterface is used extensively too, because it doesn’t break existing implementors.

    If your solution came up in a code audit or review, I wouldn’t reject it – it’s fine, IMHO.

    • 0