Velan Info Services IOS Developer Interview Questions and Answers

Threads in Java allow for concurrent execution of code, enabling multitasking and improving performance.

• Threads are lightweight sub-processes within a process.

• They allow for concurrent execution of code, enabling multitasking.

• Threads share the same memory space, allowing for efficient communication and data sharing.

• Examples include creating threads using the Thread class or implementing the Runnable interface.

Volatile keyword ensures visibility of changes to variables across threads. Reified keyword is used to access type information at runtime in generics.

• Volatile keyword is used to indicate that a variable's value will be modified by different threads.

• It ensures that changes made by one thread to a volatile variable are visible to other threads.

• Reified keyword is used in generics to access type information at runtime, whi...read more

Multi module architecture in Android involves breaking down an app into multiple modules for better organization and scalability.

• Pros: better organization, easier maintenance, faster build times, code reusability

• Cons: increased complexity, potential for dependency issues, learning curve for developers

• Example: Breaking down an app into separate modules for UI, networking, and data storage can make it easier to work on d

Generics in Java allow for creating classes, interfaces, and methods that operate on types parameterized at compile time.

• Generics provide type safety by allowing the compiler to detect and prevent type errors at compile time.

• They enable code reusability by writing generic algorithms that work on different types.

• Example: List<String> names = new ArrayList<>();

• Example: public class Box<T> { private T va