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I applied via Naukri.com and was interviewed in Aug 2022. There were 3 interview rounds.
There are multiple ways to create objects in Java.
Using the 'new' keyword
Using object cloning
Using object deserialization
Using reflection
Using factory methods
Using dependency injection frameworks
The final keyword in Java is used to restrict the user from modifying the value of a variable, the definition of a method, or the inheritance of a class.
When applied to a variable, the final keyword makes it a constant that cannot be changed.
When applied to a method, the final keyword prevents it from being overridden by subclasses.
When applied to a class, the final keyword prevents it from being extended by other clas...
I applied via Naukri.com and was interviewed before Feb 2023. There was 1 interview round.
Stream API in Java provides a way to process collections of objects in a functional style.
Stream API allows for easy manipulation of collections using functional programming concepts like map, filter, and reduce.
Example: List
Streams can be parallelized to improve performance on multi-core...
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I applied via Naukri.com and was interviewed before Aug 2020. There was 1 interview round.
Strong OOPS concept is essential for Java developers to write efficient and maintainable code.
Understanding of classes, objects, inheritance, polymorphism, and encapsulation
Ability to design and implement complex systems using OOPS principles
Experience with design patterns and SOLID principles
Knowledge of interfaces, abstract classes, and access modifiers
Familiarity with UML diagrams for modeling software systems
I applied via Company Website and was interviewed in Jul 2020. There was 1 interview round.
Java is a high-level programming language known for its platform independence and object-oriented approach.
Java is widely used for developing desktop, web, and mobile applications.
It is known for its write once, run anywhere (WORA) capability.
Java uses a virtual machine (JVM) to execute code, providing portability across different operating systems.
It supports multithreading, exception handling, and dynamic memory allo...
Inheritance is a mechanism in object-oriented programming where a new class is created from an existing class.
Allows for code reuse and promotes code organization
The new class (subclass) inherits properties and methods from the existing class (superclass)
Subclass can add new properties and methods or override existing ones
Example: A Car class can inherit properties and methods from a Vehicle class
I applied via Referral and was interviewed in Nov 2020. There was 1 interview round.
A program to calculate the sum of numbers.
Create a variable to store the sum.
Iterate through the numbers and add each number to the sum.
Return the sum.
Java is a high-level, object-oriented programming language used to develop applications for various platforms.
Java is platform-independent and can run on any device with a Java Virtual Machine (JVM)
It is known for its security features and is commonly used for developing web applications, mobile apps, and enterprise software
Java code is compiled into bytecode, which can be executed on any platform that has a JVM instal...
Java is a versatile, platform-independent language with a vast community and extensive libraries.
Java is object-oriented and easy to learn.
It has a vast community and extensive libraries.
It is platform-independent and can run on any device.
Java is secure and reliable.
It is used in various domains like web development, mobile app development, and enterprise applications.
Examples: Android apps, Spring framework, Hadoop,
I applied via Naukri.com and was interviewed before Sep 2020. There was 1 interview round.
String is a class in Java used to represent a sequence of characters.
Strings are immutable in Java
String objects can be created using string literals or the new keyword
String class provides various methods for manipulating strings such as substring, replace, etc.
I applied via Naukri.com and was interviewed before May 2021. There was 1 interview round.
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