Xyz Company Software Engineer Interview Questions and Answers

During the coding test, I was asked to write a program to check the frequency of characters in a string.

Q1. What is Java , what are the four pillars of java
Ans. 
Java is a popular programming language known for its platform independence and object-oriented approach.
• Java is platform-independent, meaning it can run on any device with a Java Virtual Machine (JVM)

• Object-oriented programming is a key feature of Java, allowing for code reusability and modularity

• The four pillars of Java are: Inheritance, Encapsulation, Abstraction, and Polymorphism

• Inheritance allows a class to inherit...read more
Answered by AI
Add your answer
Q2. Related to collection framework
Add your answer
Q3. What is recursion, write a code for it
Ans. 
Recursion is a programming technique where a function calls itself to solve a problem.
• Recursion involves breaking down a problem into smaller subproblems and solving them recursively.

• A base case is needed to stop the recursion and prevent infinite loops.

• Example: Factorial calculation using recursion - function factorial(n) { return n === 0 ? 1 : n * factorial(n-1); }
Answered by AI
Add your answer
Q4. Why we don't use pointers in java
Add your answer
Q5. What are the difference between array and arraylist
Add your answer

Q1. Tell about yourself
Add your answer
Q2. Your acheivements
Add your answer

Reverse a string using functional programming java

Springboot implementation crud operation for airline booking

Math , reasoning , nothing else h .h

Arrays arrange, string range h j