HCLTech Elec.Tecnician Interview Questions and Answers

A program to replace a character with another character in Java.

• Create a string variable with the original text

• Use the replace() method to replace the character with another character

• Print the new string with the replaced character

A framework is a set of guidelines, standards, and tools used to develop software applications.

• A framework provides a structure for developers to build upon

• It includes pre-written code and libraries to simplify development

• Frameworks can be specific to a programming language or platform

• Examples include React for web development and TensorFlow for machine learning

Multithreading is the ability of a CPU to execute multiple threads concurrently, improving performance and responsiveness.

• Multithreading allows for parallel execution of tasks, utilizing multiple CPU cores.

• It enables concurrent processing, where multiple threads can execute simultaneously.

• Thread synchronization mechanisms like locks and semaphores are used to prevent data inconsistencies.

• Multithreading can be used to i...read more

Constructors are used to initialize objects while destructors are used to destroy objects.

• Constructors are called when an object is created while destructors are called when an object is destroyed.

• Constructors have the same name as the class while destructors have the same name as the class preceded by a tilde (~).

• Constructors can be overloaded while destructors cannot be overloaded.

• Constructors do not have a return ty...read more