Pilog Interview Questions and Answers

Avoid deadlock in Java by implementing proper locking strategies and avoiding circular dependencies.

• Use a consistent order when acquiring multiple locks to prevent circular dependencies.

• Avoid holding multiple locks at the same time if possible.

• Use timeouts when acquiring locks to prevent indefinite waiting.

• Consider using higher-level concurrency utilities like Executors and Concurrent Collections to avoid manual locking.

throw is used to explicitly throw an exception in a method, while throws is used in method signature to declare the exceptions that can be thrown by the method.

• throw is used within a method to throw an exception explicitly

• throws is used in method signature to declare the exceptions that can be thrown by the method

• throw is followed by an instance of Throwable class

• throws is followed by the exception classes separated by commas

Data encapsulation is the concept of bundling data and methods that operate on the data into a single unit.

• Encapsulation helps in hiding the internal state of an object and only exposing the necessary functionalities.

• It allows for better control over the data by preventing direct access from outside the class.

• Encapsulation promotes code reusability and modularity by organizing data and methods together.

• Example: In a class representing a car, encapsulation would involve privat...read more