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Cine Square Entertainment Interview Questions and Answers

Updated 27 Nov 2024

Q1. what is collection framework

Ans.

Collection framework is a unified architecture for representing and manipulating collections of objects in Java.

  • Provides interfaces (List, Set, Map) and classes (ArrayList, HashSet, HashMap) for storing and manipulating groups of objects

  • Includes algorithms for searching, sorting, and manipulating collections

  • Allows for easy iteration over collections using iterators or enhanced for loops

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Q2. what are the OOPS concept

Ans.

OOPS concepts are the four main principles of Object-Oriented Programming: Inheritance, Encapsulation, Abstraction, and Polymorphism.

  • Inheritance: Allows a class to inherit properties and behavior from another class.

  • Encapsulation: Bundling data and methods that operate on the data into a single unit.

  • Abstraction: Hiding the complex implementation details and showing only the necessary features of an object.

  • Polymorphism: Ability of an object to take on many forms.

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Q3. what is functional interface

Ans.

A functional interface is an interface that contains only one abstract method.

  • Functional interfaces can have multiple default or static methods, but only one abstract method.

  • Functional interfaces are used in lambda expressions and method references.

  • Examples of functional interfaces in Java include Runnable, Callable, and Comparator.

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Q4. what is java ?

Ans.

Java is a high-level programming language known for its portability, security, and object-oriented features.

  • Java is platform-independent, meaning it can run on any device with a Java Virtual Machine (JVM).

  • It is known for its strong security features, such as automatic memory management and built-in exception handling.

  • Java is an object-oriented language, allowing for modular and reusable code through classes and objects.

  • Popular frameworks and libraries in Java include Spring, ...read more

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Q5. what is Streams

Ans.

Streams are sequences of data that allow for efficient processing of large amounts of data in a continuous manner.

  • Streams are used for processing data in a continuous and efficient manner.

  • They allow for reading and writing data in chunks rather than all at once.

  • Examples include reading a file line by line, processing a live video feed, or receiving real-time data from a network connection.

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Q6. java 8 feature ?

Ans.

Java 8 introduced several new features including lambda expressions, streams, and the new Date and Time API.

  • Lambda expressions allow for more concise code and easier parallel programming.

  • Streams provide a way to process collections of objects in a functional style.

  • The new Date and Time API offers improved date and time handling compared to the old Date and Calendar classes.

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Q7. What does #include perform?

Ans.

The #include directive is used to include a file in the source code.

  • It allows the programmer to use code from other files in their program.

  • The included file is processed by the preprocessor before compilation.

  • The syntax is #include or #include "filename".

  • Examples of included files are header files like or user-defined header files.

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Q8. What is a Left Join?

Ans.

A Left Join is a type of join operation in relational databases that returns all rows from the left table and the matched rows from the right table.

  • Returns all rows from the left table, even if there are no matches in the right table

  • If there are no matches, NULL values are used for the columns from the right table

  • Useful for retrieving data from one table while including any matching data from another table

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Q9. Concatenation of two lists

Ans.

Concatenate two lists of strings into a single list

  • Use the '+' operator to concatenate two lists

  • Ensure both lists are arrays of strings before concatenating

  • Example: list1 = ['apple', 'banana'], list2 = ['orange', 'grape']

  • Concatenated list: ['apple', 'banana', 'orange', 'grape']

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