Western Union Java Developer Interview Questions and Answers

Create a resp api with one endpoint which return responseentity

Q1. Async rest endpoint, multi threading, thread pool, spring boot templates
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Q2. Architecture of current project
Ans. 
The architecture of the current project follows a microservices design pattern with separate services for different functionalities.
• Utilizes RESTful APIs for communication between services

• Uses Docker containers for deployment and scalability

• Implements service discovery and load balancing with tools like Eureka or Consul
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Design text editor, one problem, explain while you code.

Q1. Based on your resume
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Q1. Modified binary search
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Q1. Check if braces are balanced
Ans. 
Check if braces are balanced in a given string
• Use a stack to keep track of opening braces

• Iterate through the string and push opening braces onto the stack

• When a closing brace is encountered, pop from the stack and check if it matches the corresponding opening brace

• If stack is empty at the end and all braces are matched, then the braces are balanced
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Q1. Puzzles - How to track 1.5 hours with 2 candles that burn for 1 hour each without cutting in half.
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3 Questions Medium Level

Q1. Java Coding Question Hard Level
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There were some questions related to core java and new features introduced in java-8, the oops concept, and the internal working of HashMap. one coding question related to string.