Java Interview Questions

Q41 What is the difference between fail-fast and fail-safe iterator? ✓ Answered → Q42 Explain autoboxing and unboxing. ✓ Answered → Q43 What is the difference between interface and functional interface? Generate → Q44 What is a marker interface? Generate → Q45 What is daemon thread? Generate → Q46 What is ExecutorService? ✓ Answered → Q47 Explain ConcurrentHashMap. ✓ Answered → Q48 What is the difference between wait() and sleep()? ✓ Answered → Q49 Explain Java memory model. ✓ Answered → Q50 What are generics in Java? Generate → Q51 Explain JVM architecture in detail. Generate → Q52 How does class loading mechanism work in Java? Generate → Q53 What are different class loaders in Java? Generate → Q54 Explain Java memory areas. Generate → Q55 What is metaspace in Java? Generate → Q56 How does garbage collection work internally? Generate → Q57 What are different GC algorithms? Generate → Q58 What is G1 garbage collector? Generate → Q59 Explain stop-the-world event. Generate → Q60 What is Just-In-Time (JIT) compiler? Generate →