Android frameworks
Java and Kotlin
1. What is the difference between an abstract class and an interface in Java?
Answer
2. What is the difference between the “==” operator and the “.equals()” method in Java?
Answer
3. What is a lambda expression in Kotlin?
Answer
4. What is the difference between a lateinit property and an initialized property in Kotlin?
Answer
5. What is the difference between a HashSet and a TreeSet in Java?
Answer
6. What is a companion object in Kotlin?
Answer
7. What is the difference between a class and an object in Kotlin?
Answer
8. What is polymorphism in Java?
Answer
9. What is a functional interface in Java?
Answer
10. What is the difference between a private and a protected method in Java?
Answer
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