HEPL - A Cavinkare Group Company Junior Java Developer Interview Questions and Answers

They are asking C programming output question

They prefer Java language for logical thinking programming round

It is easy to crack the first round with the basic topics of aptitude.

Must learn string,array,pointer and others to clear this round

Q1. Basic Java Question?
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Q2. Related oops concept
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Q1. Deep in Collections, Java 8 features, Arrays, Exceptions
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Q1. Interfaces and stream coding questions were asked
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Q2. New features added in Java 11,java 8 features, so many questions from oops, Hashmap coding questions were asked, annotations of spring boot were asked
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Q3. Dependency injection
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Q1. Same questions but they were asked about every topic in detail, better to prepare all the topics in detail.
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Easy to solve math related que

Somewhat difficult in constraints

Ages, trains, profit losss, hcf lcm, clock, simple interest 30 min

Array string sorting algorithm

Q1. What are the design patterns you know in java
Ans. 
Design patterns in Java are reusable solutions to common problems in software design.
• Creational patterns (e.g. Singleton, Factory, Builder)

• Structural patterns (e.g. Adapter, Decorator, Facade)

• Behavioral patterns (e.g. Observer, Strategy, Template Method)
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Q2. What is daimond problem
Ans. 
The diamond problem occurs in multiple inheritance when a class inherits from two classes that have a common ancestor, leading to ambiguity in method invocation.
• Diamond problem arises in multiple inheritance when a class inherits from two classes that have a common ancestor.

• It leads to ambiguity in method invocation as the compiler cannot determine which inherited method to invoke.

• Example: Class A has a method 'display...read more
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