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Epps Infotech Java Developer Trainee Interview Questions and Answers
Epps Infotech Java Developer Trainee Interview Experiences
1 interview found
Selected
I applied via Walk-in and was interviewed before Mar 2023. There were 2 interview rounds.
30 mcq questions based on Core Java ,Spring annotation ,Spring MVC and Servelet,Hibernate
(5 Questions)
- Q1. Core Java questions,Hibernate Mappings ,collections questions,Logical basic questions
- Q2. Hashmap Put and retrive element
- Q3. How to compare objects in java
- Ans.
Objects in Java can be compared using the equals() method or by implementing the Comparable interface.
Use the equals() method to compare objects for equality.
Implement the Comparable interface and override the compareTo() method to define custom comparison logic.
For comparing custom objects, override the equals() and hashCode() methods for proper comparison.
- Q4. Annotations in Hibernate
- Ans.
Annotations in Hibernate are used to provide metadata about the entity class and its properties.
Annotations are used to map Java classes to database tables and properties to columns.
Annotations reduce the need for XML configuration files in Hibernate.
Examples of annotations in Hibernate include @Entity, @Table, @Column, @Id, @GeneratedValue, etc.
- Q5. How Hashmap works internally
- Ans.
HashMap in Java uses hashing to store key-value pairs and provides constant-time performance for basic operations.
HashMap uses an array of buckets to store key-value pairs.
When a key-value pair is added, the key is hashed to determine the index in the array where the pair will be stored.
If multiple keys hash to the same index (collision), a linked list or balanced tree is used to store multiple entries at that index.
Ha...
Skills evaluated in this interview
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Interview questions from similar companies
(2 Questions)
- Q1. What is the difference between abstract class and an interface in Java?
- Ans.
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
Abstract class can have constructors, member variables, and methods, while interface cannot.
A class can implement multiple interfaces but can only extend one abstract class.
Abstract classes are used to define a common behavior among subclasses, while interfaces are used to define a contract for classes to impl...
- Q2. An abstract class can have method implements and abstract method, while an interface only contains abstract method (before Java 8) . Abstract classes support single inheritance, whereas interfaces support ...
- Ans.
Abstract classes can have both implemented and abstract methods, while interfaces can only have abstract methods. Abstract classes support single inheritance, interfaces support multiple inheritance.
Abstract classes can have both implemented and abstract methods, providing more flexibility in design.
Interfaces can only have abstract methods, promoting a more strict contract for implementing classes.
Abstract classes sup...
I applied via Walk-in and was interviewed in Nov 2024. There were 2 interview rounds.
Questions on string and arrays both are moderate level questions on hacherrank type for 20 marks
(2 Questions)
- Q1. Constructor chaining
- Q2. Hasmap and treemap
I applied via LinkedIn and was interviewed in Nov 2024. There was 1 interview round.
(1 Question)
- Q1. Write a program for factorial of a number using for loop?
- Ans.
Program to calculate factorial of a number using for loop
Initialize a variable to store the factorial result
Use a for loop to iterate from 1 to the given number
Multiply the current value with the factorial result in each iteration
Return the factorial result
Senior Java Developer Interview Questions & Answers
Geekyants Software
Anonymous
posted on 8 Nov 2024
I applied via Naukri.com
(1 Question)
- Q1. Scenario based questions asked
I applied via Naukri.com and was interviewed in Feb 2024. There was 1 interview round.
There were 5 questions and we need to solve 4 questions in java. Mostly Array and string based.
I applied via Campus Placement
30 min aptitude quetiobs
2 coding questions where asked i simple logics
(1 Question)
- Q1. Technical interview
(2 Questions)
- Q1. What is method overloading?
- Q2. Defining multiple methods with the same name but different parameters.
Java Developer Interview Questions & Answers
Thinkitive Technologies
Rupali Gaikar
posted on 8 Aug 2024
I applied via Naukri.com and was interviewed in Jul 2024. There was 1 interview round.
(1 Question)
- Q1. Oops Concepts ,Absrtraction,Polymorphism
I applied via Company Website and was interviewed in May 2024. There was 1 interview round.
(4 Questions)
- Q1. Debugging Techniques, Types of Logs
- Ans.
Debugging techniques involve using logs to identify and fix issues in code.
Types of logs include console logs, file logs, event logs, and trace logs.
Debugging techniques include using breakpoints, stepping through code, and analyzing error messages.
Logging frameworks like log4net and NLog can be used to generate logs for debugging purposes.
- Q2. Aptitude type questions
- Q3. Basic sql queries, sql injection
- Q4. Sessions and cookies
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