Kritika Software Business Owner Interview Questions, Process, and Tips

OOP in Java stands for Object-Oriented Programming, a programming paradigm that uses objects to design applications.

• OOP in Java focuses on creating objects that contain data and methods to manipulate that data.

• It involves concepts like classes, objects, inheritance, polymorphism, and encapsulation.

• For example, a class 'Car' can have objects like 'Toyota', 'Honda', etc. with methods like 'drive()' and 'stop()'.

Java is a general-purpose programming language, while JavaScript is a scripting language primarily used for web development.

• Java is a statically typed language, while JavaScript is dynamically typed.

• Java is compiled and runs on the Java Virtual Machine (JVM), while JavaScript is interpreted and runs in the browser.

• Java is used for building standalone applications, server-side applications, and Android apps, while JavaS...read more

A virtual class in Java is a class that cannot be instantiated directly but can be extended by other classes.

• Virtual classes are used as base classes for other classes to inherit from

• They are declared using the 'abstract' keyword

• Virtual classes can have abstract methods that must be implemented by subclasses

Left join includes all records from the left table and matching records from the right table, while right join includes all records from the right table and matching records from the left table.

• Left join keeps all records from the left table, even if there are no matches in the right table.

• Right join keeps all records from the right table, even if there are no matches in the left table.

• Example: Left join - SELECT * FRO...read more

DDL, DCL, and DML are different types of SQL commands used for managing databases.

• DDL (Data Definition Language) is used to define the structure of database objects like tables, indexes, etc. Examples include CREATE, ALTER, DROP.

• DCL (Data Control Language) is used to control access to data in the database. Examples include GRANT, REVOKE.

• DML (Data Manipulation Language) is used to manipulate data in the database. Exampl