Netcore Cloud Private Limited Backend Developer Intern Interview Questions and Answers

Association and composition are two types of relationships between classes in object-oriented programming.

• Association is a relationship where two classes are related in some way, but can exist independently. For example, a teacher and a student are associated as a teacher can teach multiple students.

• Composition is a stronger form of association where one class is composed of one or more other classes. For example, a ca...read more

Thread safety in Java refers to the ability of a piece of code to function correctly during simultaneous execution by multiple threads.

• Thread safety is important in multi-threaded environments to prevent race conditions and ensure data consistency.

• Synchronization mechanisms like synchronized blocks, locks, and atomic variables can be used to achieve thread safety.

• Example: Using synchronized keyword to ensure only one t...read more

Runnable is a functional interface used for running a task, while Callable is a functional interface used for returning a result.

• Runnable does not return a result and cannot throw checked exceptions, while Callable can return a result and throw checked exceptions.

• Callable interface is a generic interface that returns a result, while Runnable interface does not return a result.

• Example: Runnable interface is commonly use...read more