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Master the Java Collections Framework with 100 interview questions and detailed answers. **Part 1: Foundation & intermediate (Q1-50)** - Collections overview, List vs Set vs Map, ArrayList vs LinkedList, HashSet vs TreeSet, HashMap vs Hashtable - Comparable vs Comparator, HashMap internals, equals() and hashCode(), LinkedHashMap, PriorityQueue - LRU cache, time complexity, Stream API, choosing the right collection **Part 2: Advanced & expert (Q51-100)** - Internal implementations, concurrent collections, performance optimization, real interview scenarios **Features** - Code examples with syntax highlighting - Interview tips and common pitfalls - Comparison tables - PDF-friendly format
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100 most-asked Java multithreading and concurrency interview questions, from thread lifecycle to executors and locks.
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A library of 12+ Java e-books covering basics, OOP, DSA, problem solving and interview prep.
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The all-in-one Java bundle: 3000+ interview questions, 50+ e-books, 500+ coding problems, DSA notes and bonus courses.
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