Kirkenes 10 day weather forecast, updated four times a day and shows the weather summary plus detailed sun, rain, snow, wind and temperature. The weather forecast extends out to 10 days showing information for morning, afternoon and overnight.
1 Abstract classes can extend other class and implement interfaces but interface can only extend other interfaces. 2  We can run an abstract class if it has main() method but we canât run an interface because they canât have main method implementation.
Before Java 8: 1  You could use abstract and regular classes to provide static and default methods. The role of interfaces is clear. 2  All the methods in an interface should be overriden by implementing classes. 3  You can't add a new method in an interface without modifying all the implementations, but this is actually a good thing.