Method Now Final

The final modifier is added to the declaration of a library method.

Example

The abstract class Vehicle adds the final modifier to the move method. Afterwards, the method’s body is removed.

public abstract class Vehicle {
-  public void move() {
+  public final move() {
    System.out.println("The vehicle is moving.");
  }

}

Broken Uses

Hereafter, we list the broken uses that are currently detected by Maracas.

• 1. Methods overriding the now-final method

1. Methods overriding the now-final method

(With or without the explicit use of the @Override annotation)

Example

The LanVehicle class—declared in the in a client project—extends the Vehicle class form the library. It overrides the move method coming from the Vehicle class. Then, a broken use is reported pointing to the method declaration given that the method cannot be overriden anymore.

public class LandVehicle extends Vehicle {
  // Broken use reported here
  @Override
  public final move() {
    System.out.println("The land vehicle is moving.");
  }
}