Difference between Abstract vs. Interface

Abstract An abstract class can’t be instantiated, but it can be subclassed. An abstract class usually contains abstract and non-abstract methods that subclasses are forced to provide an implementation for. Abstract class doesn’t support multiple inheritance  Abstract class can have final, non-final, static and non-static variables  Abstract class can have static methods, main method and …

Java Interview Questions

1. What’s the difference between Abstract vs. Interface? ANSWER: An abstract class can’t be instantiated, but it can be subclassed. An abstract class usually contains abstract and non-abstract methods that subclasses are forced to provide an implementation for. An interface is a completely “abstract class” that is used to group related methods with empty bodies. …

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