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I applied via Walk-in and was interviewed in Oct 2024. There were 2 interview rounds.
Some coding questions
Exception propagation in Java is the process of passing an exception from one method to another in the call stack.
Exceptions can be thrown in a method and propagated up the call stack until they are caught and handled.
If an exception is not caught in a method, it will be propagated to the calling method.
This continues until the exception is caught or reaches the top of the call stack.
Example: If a method 'A' calls meth...
JDBC is a Java API for connecting and executing SQL queries on databases. The return type of a statement in JDBC is boolean.
JDBC stands for Java Database Connectivity.
It allows Java programs to interact with databases using SQL queries.
The return type of a statement in JDBC is boolean, indicating whether the query was successfully executed.
I applied via Walk-in and was interviewed in Jul 2024. There were 3 interview rounds.
Strings are immutable in Java to ensure thread safety, security, and optimization.
Immutable strings are thread-safe as they cannot be modified concurrently by multiple threads.
Immutable strings enhance security by preventing malicious code from altering the string content.
String interning is possible due to immutability, allowing for memory optimization.
Examples: String str = "Hello"; str.concat(" World"); // This does
Runnable is a functional interface with a run() method, while Callable is a functional interface with a call() method that can return a result or throw an exception.
Runnable does not return a result or throw a checked exception, while Callable can return a result or throw a checked exception.
Callable is used in scenarios where you need to return a result or handle checked exceptions, while Runnable is used for simple t...
Spring auto configuration automatically configures Spring beans based on classpath and property settings.
Spring scans classpath for certain annotations like @Component, @Service, @Repository, @Controller, etc.
Based on these annotations and property settings, Spring automatically configures beans.
Auto configuration can be customized using @Conditional annotations or configuration classes.
Example: @SpringBootApplication ...
Second level cache in Hibernate is used to cache data at the session factory level to reduce database hits.
Second level cache stores objects across sessions to reduce database calls
Improves performance by reducing database hits
Configurable cache providers like Ehcache, Infinispan can be used
I was responsible for designing and developing Java applications, collaborating with team members, and troubleshooting issues.
Designed and developed Java applications according to project requirements
Collaborated with team members to ensure smooth project execution
Troubleshooted and resolved any issues that arose during development
Transaction management in Spring helps in managing database transactions in a consistent and reliable manner.
Spring provides support for both programmatic and declarative transaction management.
Programmatic transaction management involves handling transactions in code using TransactionTemplate or PlatformTransactionManager.
Declarative transaction management involves using annotations like @Transactional to define trans...
I applied via Naukri.com and was interviewed before Dec 2023. There was 1 interview round.
The return type of the add method depends on the specific implementation and requirements of the program.
Return type can be int, double, void, or any other data type depending on what the method is supposed to do.
For example, an add method for adding two integers may have a return type of int.
If the add method is simply updating a value and not returning anything, the return type may be void.
I have used annotations like @RestController, @Autowired, @RequestMapping, @Service, @Component, @Repository in Spring Boot.
Used @RestController to define RESTful web services.
Used @Autowired to inject dependencies.
Used @RequestMapping to map web requests to specific handler methods.
Used @Service to mark a class as a service component.
Used @Component to mark a class as a Spring component.
Used @Repository to mark a clas
I have worked on various projects including e-commerce websites, financial management systems, and mobile applications.
Developed an e-commerce website using Java Spring framework
Implemented financial management system with Java EE technologies
Created mobile applications using Android Studio and Java
Optimizing queries involves using indexes, limiting result sets, avoiding unnecessary joins, and optimizing database schema.
Use indexes on columns frequently used in WHERE clauses
Limit result sets by using pagination or filtering
Avoid unnecessary joins by denormalizing data or using subqueries
Optimize database schema by reducing redundancy and normalizing data
Thread safety ensures that shared data is accessed and modified by multiple threads in a safe and consistent manner.
Thread safety is important in multi-threaded programming to prevent race conditions and ensure data integrity.
It can be achieved through synchronization mechanisms like locks, mutexes, and atomic operations.
For example, using synchronized keyword in Java to protect critical sections of code from concurren
I applied via Naukri.com and was interviewed in Oct 2023. There were 3 interview rounds.
C-Edge Technologies interview questions for designations
Arrays are a data structure that stores a collection of elements of the same data type in a contiguous memory location.
Arrays have a fixed size determined at the time of declaration.
Elements in an array are accessed using an index starting from 0.
Example: String[] names = new String[5];
Data structures in Java are used to store and organize data efficiently.
Java provides built-in data structures like arrays, lists, sets, maps, queues, and stacks.
Arrays are used to store a fixed-size collection of elements of the same data type.
Lists like ArrayList and LinkedList can dynamically grow and shrink in size.
Sets ensure unique elements and maps store key-value pairs.
Queues follow the FIFO (First In First Out...
Get interview-ready with Top C-Edge Technologies Interview Questions
Top trending discussions
The purpose of a default constructor is to initialize the object's instance variables with default values.
A default constructor is automatically provided by the compiler if no constructor is defined in the class.
It is used to create an object of the class with default values for its instance variables.
Default constructors are useful when we want to create an object without passing any initial values.
Constructors are special methods used to initialize objects, while methods are regular functions that perform specific tasks.
Constructors have the same name as the class, while methods have unique names.
Constructors are called automatically when an object is created, while methods need to be called explicitly.
Constructors do not have a return type, while methods have a return type.
Constructors are used to set initial v...
The main method is static because it needs to be called by the Java Virtual Machine (JVM) without creating an instance of the class.
Static methods can be called directly using the class name, without creating an object of the class.
The main method is the entry point of a Java program, and it needs to be called by the JVM to start the execution.
If the main method were not static, we would need to create an object of the...
I applied via Approached by Company and was interviewed in Mar 2024. There were 2 interview rounds.
Code review to find bugs
Interface features include abstraction, multiple inheritance, and contract enforcement.
Abstraction: Interfaces allow for the definition of methods without implementation, providing a blueprint for classes to follow.
Multiple Inheritance: Java interfaces support multiple inheritance, allowing a class to implement multiple interfaces.
Contract Enforcement: Interfaces define a contract that implementing classes must adhere
I applied via Naukri.com and was interviewed in Sep 2024. There were 3 interview rounds.
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