HIREME Interview Questions, Process, and Tips

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Q1. Difference between array and arraylist
Ans. 
Array is a fixed-size data structure while ArrayList is a dynamic-size data structure in Java.
• Array is a static data structure with a fixed size, while ArrayList is a dynamic data structure that can grow or shrink in size.

• Arrays can hold primitive data types and objects, while ArrayList can only hold objects.

• Arrays use square brackets [] for declaration, while ArrayList is a class in Java's collection framework.

• Arrays ...read more
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Q2. What and expalin java hibernate working
Ans. 
Java Hibernate is an ORM (Object-Relational Mapping) framework that simplifies database operations in Java applications.
• Hibernate maps Java classes to database tables and vice versa

• It provides automatic generation of SQL queries based on Java objects

• Hibernate handles the mapping of Java data types to SQL data types

• It supports caching mechanisms to improve performance

• Hibernate simplifies complex database operations like
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Q1. What is multithreading
Ans. 
Multithreading is the ability of a CPU to execute multiple threads concurrently, allowing for improved performance and responsiveness.
• Multithreading allows multiple threads to run concurrently within a single process.

• Each thread has its own stack and program counter, but shares the same memory space.

• Multithreading can improve performance by utilizing multiple CPU cores efficiently.

• Examples of multithreading include web...read more
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Q2. What is Java?What are its features
Ans. 
Java is a high-level programming language known for its platform independence and object-oriented features.
• Java is platform-independent, meaning it can run on any device with a Java Virtual Machine (JVM)

• It is object-oriented, allowing for modular and reusable code

• Java has automatic memory management through garbage collection

• It supports multithreading for concurrent programming

• Java has a rich set of APIs and libraries
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60 questions in duration of 1 hr

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Medium level for group discussion

Medium level for coding test