Change default generated method stub to throw exception

[JessicaJHee]

Fixes redhat-developer/vscode-java#1792

Signed-off-by: Jessica He jhe@redhat.com

[rgrunber]

Works well form me. I just have an example that misbehaves and am wondering if there's anything we can do :

IEmployee.java

package org.example;

import java.util.List;

public interface IEmployee {
    public String getFirstName();
    public String getLastName();
    public long getEmployeeId();
    public boolean isContractor();
    public List<String> getSubscribedLists();
    public IEmployee getSupervisor();
}

Researcher.java
Note : (has a compilation error, doesn't implement any of the IEmployee methods)

package org.example;

import java.util.List;

public class Researcher implements IEmployee {
}

GradStudent.java

package org.example;

public class GradStudent extends Researcher {

}

Now go to GradStudent, and on the type declaration, activate code actions, and select "Override/Implement methods". You can select any of the ones from IEmployee and when they're created you'll see they return the default value in the body. I'm guessing this is because they aren't recognized as belonging to the super-class (they aren't) ?

I wonder if there's anything we can do, or if it's just a consequence of the valid error.

[JessicaJHee]

I wonder if there's anything we can do, or if it's just a consequence of the valid error.

I played around with your example and I think it makes sense the way it behaves right now. If I implement the methods in Researcher and resolve the unimplemented methods error, GradStudent will correctly call the base class. But if you think it is important to support this case, I can definitely take some time to look into it!