Java Interview Questions

Q101 What is hashing? ✓ Answered → Q102 What are HashMap contract rules? ✓ Answered → Q103 What is ConcurrentHashMap? ✓ Answered → Q104 What is the difference between StringBuilder and StringBuffer? ✓ Answered → Q105 What are the most common interfaces in Java collections? ✓ Answered → Q106 What is the purpose of the 'try-catch' block in Java? ✓ Answered → Q107 How do you implement a basic data structure, such as a stack or a queue, in Java? ✓ Answered → Q108 How do you create a Java class with multiple constructors? ✓ Answered → Q109 What is the difference between 'String' and 'char' in Java? ✓ Answered → Q110 How do you handle errors in a Spring Boot application? ✓ Answered → Q111 How do you optimize the performance of a Java application? ✓ Answered → Q112 How do you implement caching in a Java application? ✓ Answered → Q113 How do you handle database transactions and concurrency in a Spring Boot application? ✓ Answered → Q114 How do you ensure data consistency across multiple data sources in a REST API? ✓ Answered → Q115 How do you optimize the performance of a Spring Boot application? ✓ Answered → Q116 How do you ensure code quality and maintainability in a large-scale Spring Boot application? ✓ Answered → Q117 How do you handle security in a Spring Boot application? ✓ Answered → Q118 Can you describe your experience with React.js and Angular? ✓ Answered → Q119 How do you optimize the performance of a REST API? ✓ Answered → Q120 How have you optimized the application? ✓ Answered →