AxionConnect Infosolutions Java Software Engineer Interview Questions, Process, and Tips

Daemon thread is a low priority thread that runs in the background and provides services to user threads.

• Daemon threads are used for tasks that don't require user interaction, such as garbage collection.

• They can be created using setDaemon() method.

• They terminate automatically when all user threads have finished execution.

• Example: Timer thread in Java is a daemon thread.

Collection framework is a set of classes and interfaces that provide a way to store and manipulate groups of objects.

• Collection framework is part of Java's core libraries.

• It includes interfaces like List, Set, and Map, and their respective implementations like ArrayList, HashSet, and HashMap.

• Collections can be sorted, searched, and filtered using various methods.

• Iterators are used to traverse through collections.

• Collec...read more

Method overloading is having multiple methods with the same name but different parameters. Method overriding is having a method in child class with the same name and signature as in parent class.

• Method overloading is compile-time polymorphism

• Method overriding is run-time polymorphism

• Method overloading is used to provide different ways of calling the same method

• Method overriding is used to provide a specific implementat...read more

Static keyword is used to create class-level variables and methods.

• Static variables are shared among all instances of a class

• Static methods can be called without creating an instance of the class

• Static blocks are used to initialize static variables

• Static import is used to import static members of a class