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 have methods with implementation whereas interface provides absolute abstraction and canât have any method implementations. 2  Abstract classes can have constructors but interfaces canât have constructors. 3  Abstract class have all the features of a normal java class except that we canât instantiate it.
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.