7-Day Java Full Stack with React Interview Preparation Plan
Your saved questions plus a day-by-day plan. Add questions with Save to → 7-Day Job Prep on any question page.
Day-by-day plan
Day 1Core Java revision
- Revise JVM memory, garbage collection and String immutability
- Practise exception handling and try-with-resources
- Solve 5 easy coding problems on strings and arrays
- Write notes on Java 17 and 21 features
Day 2Collections, streams and concurrency
- Explain HashMap internals aloud without notes
- Solve 5 stream problems such as grouping and second highest salary
- Revise ConcurrentHashMap, volatile and synchronized
- Implement an LRU cache from memory
Day 3SQL practice
- Write joins, GROUP BY and HAVING queries on a sample schema
- Solve Nth highest salary and duplicates problems
- Practise window functions like DENSE_RANK and running totals
- Read an EXPLAIN plan for one slow query
Day 4Spring Boot and JPA
- Revise dependency injection, bean scopes and auto-configuration
- Explain @Transactional proxy behaviour and rollback rules
- Review N+1, lazy loading and optimistic locking
- Rebuild a small CRUD API with validation and exception handling
Day 5REST, security and microservices
- Revise HTTP methods and status codes
- Draw the JWT login flow and Spring Security filter chain
- Prepare answers on CORS, CSRF and password hashing
- Revise circuit breaker, saga and rate limiting patterns
Day 6React and JavaScript
- Revise closures, event loop, promises and this
- Practise useEffect, useMemo and custom hooks
- Build a protected route and an Axios interceptor
- Prepare a 2-minute walkthrough of your frontend project
Day 7Projects, HR and mock interview
- Prepare a clear architecture explanation of your main project
- Write STAR answers for a bug fix, a deadline and a conflict
- Take one full mock interview with a friend or mentor
- Review weak areas and rest well before the interview
Frequently asked questions
Can I prepare for a Java Full Stack with React interview in 7 days?
Seven days is enough to revise and sharpen, not to learn from zero. Use the plan to cover each core topic once, practise questions daily and finish with a mock interview.
How do I add questions to the plan?
On any question page choose Save to → 7-Day Job Prep. Saved questions show up at the top of this page.
How many hours a day should I study?
Two to four focused hours a day works for most people: one hour of revision, one to two hours of questions, and the rest on projects or mock answers.
Questions to practise each day
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