Axxonet System Technologies Software Engineer Interview Questions and Answers

Basic aptitude followed with english and reasoning

Q1. Core java technical questions , spring , spring boot
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Q2. What is JIT in java
Ans. 
JIT stands for Just-In-Time compilation in Java. It dynamically compiles bytecode into machine code at runtime for improved performance.
• JIT is a part of the Java Virtual Machine (JVM) that optimizes the execution of Java programs.

• It analyzes the frequently executed parts of the bytecode and compiles them into native machine code.

• This compilation happens at runtime, just before the code is executed, hence the name Just-...read more
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Q3. Explain lifecyxle of thread in java
Ans. 
The lifecycle of a thread in Java includes several stages from creation to termination.
• A thread is created using the Thread class or implementing the Runnable interface.

• The thread goes through the new, runnable, and blocked states before running.

• Once running, the thread can be paused, resumed, or stopped.

• Finally, the thread reaches the terminated state and cannot be restarted.
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Basic java questions

Q1. Explain Linked list implementation and stack
Ans. 
Linked list is a data structure where each element points to the next element. Stack is a data structure that follows Last In First Out (LIFO) principle.
• Linked list implementation involves creating nodes with data and a pointer to the next node.

• Stack implementation involves pushing elements onto the stack and popping them off in reverse order.

• Example: Linked list - 1 -> 2 -> 3 -> NULL, Stack - push(1), push(2), push(3)
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Q2. Oops concepts in java
Ans. 
Oops concepts in Java refer to Object-Oriented Programming principles like Inheritance, Encapsulation, Polymorphism, and Abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability of a method to do different things based on the object it is acting upon.

• Abstraction: Hiding the imp...read more
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Q1. Questions was based on SQL
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Q2. SQL queries and joins and
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Q1. What are joins in sql
Ans. 
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables based on a related column

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column
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Q2. Types of arrays in PHP
Ans. 
Types of arrays in PHP include indexed arrays, associative arrays, and multidimensional arrays.
• Indexed arrays: default type where each element is assigned a numeric index starting from 0.

• Associative arrays: elements are assigned a specific key instead of numeric index.

• Multidimensional arrays: arrays within arrays, creating a matrix-like structure.

• Example: $indexedArray = [1, 2, 3]; $associativeArray = ['key1' => 'value...read more
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Q1. Basic java questions
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Q2. Sql related questions
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Basic aptitude followed with english and reasoning

Q1. Core java technical questions , spring , spring boot
Add your answer
Q2. What is JIT in java
Ans. 
JIT stands for Just-In-Time compilation in Java. It dynamically compiles bytecode into machine code at runtime for improved performance.
• JIT is a part of the Java Virtual Machine (JVM) that optimizes the execution of Java programs.

• It analyzes the frequently executed parts of the bytecode and compiles them into native machine code.

• This compilation happens at runtime, just before the code is executed, hence the name Just-...read more
Answered by AI
Add your answer
Q3. Explain lifecyxle of thread in java
Ans. 
The lifecycle of a thread in Java includes several stages from creation to termination.
• A thread is created using the Thread class or implementing the Runnable interface.

• The thread goes through the new, runnable, and blocked states before running.

• Once running, the thread can be paused, resumed, or stopped.

• Finally, the thread reaches the terminated state and cannot be restarted.
Answered by AI
Add your answer