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Senior Java Developer Interview Questions

"Senior developers have years of experience in Java and have the knowledge and communication skills to mentor other developers. Companies prioritize strong technical skills and questions will focus on problem solving and critical thinking. A bachelor's degree in computer science or a related field, along with years of industry experience are standard."

5,300 senior java developer interview questions shared by candidates

Code: Q2. Practical Task: Design a Distributed Message Queue You are tasked with designing and implementing a distributed message queue in Java. This message queue must support the following features: 1. Producer/Consumer Pattern: Multiple producers should be able to add messages, and multiple consumers should be able to consume messages concurrently. 2. Message Ordering: Ensure that the messages are consumed in the order they were produced, but only once. 3. High Availability: Implement fault tolerance mechanisms to ensure messages are not lost if a node in the system fails. 4. Scalability: The system should handle a large number of producers and consumers without severe performance degradation. Provide a high-level implementation of the core components (e.g., Producer, Consumer, Broker) and explain the design decisions you made (e.g., thread safety, use of data structures, and synchronization mechanisms)
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Senior Java Developer

Interviewed at Andersen Lab

4.4★
Mar 14, 2025

Code: Q2. Practical Task: Design a Distributed Message Queue You are tasked with designing and implementing a distributed message queue in Java. This message queue must support the following features: 1. Producer/Consumer Pattern: Multiple producers should be able to add messages, and multiple consumers should be able to consume messages concurrently. 2. Message Ordering: Ensure that the messages are consumed in the order they were produced, but only once. 3. High Availability: Implement fault tolerance mechanisms to ensure messages are not lost if a node in the system fails. 4. Scalability: The system should handle a large number of producers and consumers without severe performance degradation. Provide a high-level implementation of the core components (e.g., Producer, Consumer, Broker) and explain the design decisions you made (e.g., thread safety, use of data structures, and synchronization mechanisms)

1) Asked to write any Sorting algorithm and asked me to explain the complexity and space complexity. 2) Multithreading and Synchronization program. 3) Guidelines to be followed for Code interview 4) Linked list vs Hashmap 5) Some OOps concepts 6) Web services
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Senior Java Developer

Interviewed at Capital One

3.6★
Oct 22, 2016

1) Asked to write any Sorting algorithm and asked me to explain the complexity and space complexity. 2) Multithreading and Synchronization program. 3) Guidelines to be followed for Code interview 4) Linked list vs Hashmap 5) Some OOps concepts 6) Web services

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