Tata Consultancy Services
Parte da empresa Tata Group
Empresa engajada
Pergunta de entrevista da empresa Tata Consultancy Services
What is the difference between an abstract class and an interface in Java?
Resposta da entrevista
Sigiloso
4 de dez. de 2025
Abstract Class • Can have both abstract & non-abstract methods. • Can have constructors. • Supports single inheritance only. • Can have variables with any access modifier. • Interface • By default all methods are abstract (until Java 8). • No constructors. • Supports multiple inheritance. • Variables are public, static, and final by default.