Java 8 Interview Questions and Answers | 50 Most Asked Questions Explained

Master the 50 most important Java 8 interview questions — explained with logic, not memorization. Your complete Java 8 interview prep guide for experienced developers. Whether you're targeting product-based or service-based companies, this video covers every critical Java 8 feature through the lens of real interview questions and answers. 📌 What You'll Learn: Default Methods in Interface → Why default methods were introduced → Default methods & backward compatibility → The Diamond Problem explained Static Methods in Interface → Why static methods were added to interfaces → Features & static method invocation rules Functional Interface → What are functional interfaces & @FunctionalInterface annotation → BiFunction vs Function | UnaryOperator vs BinaryOperator → Predicate, Function, Consumer & Supplier → Chaining Functional Interfaces | andThen() vs compose() → Predicate Chaining using and() Lambda Expressions → Lambda Expression syntax & rules → Lambda vs Anonymous class → Method Reference — Static, Instance (arbitrary & particular object), Constructor Optional Class → Why Optional was introduced → orElse() vs orElseGet() → Optional class methods | Optional.of() vs Optional.ofNullable() Stream API in Java 8 → filter(), map(), forEach() → Primitive Streams → map() vs flatMap() → Intermediate vs Terminal operations → Lazy loading vs Eager loading in streams Date-Time API → LocalDate, LocalTime, LocalDateTime → ZonedDateTime & ZoneId → Old DateTime API vs New Date-Time API MetaSpace If you're a fresher or an experienced Java developer preparing for your next interview, these Java 8 coding interview questions will help you walk in with confidence — not just answers, but real understanding. 🔔 Subscribe for weekly Java & Spring Boot interview prep → [Your Subscribe Link] 📚 Recommended Videos: → Java 8 Features for Interviews | Default Methods, Lambda Expressions, Streams API & More :    • Java 8 Features for Interviews | Default M...   00:00 : Introduction 00:30 : Java 8 Features 00:58 : Default Methods in Interface 03:01 : Static Methods in Interface 04:02 : Functional Interface in Java 8 : Part 1 06:26 : Lambda Expressions in Java 8 : Part 1 08:47 : Functional Interface in Java 8 : Part 2 12:43 : Lambda Expressions in Java 8 : Part 2 16:48 : Stream in Java 8 24:12 : Method Reference 27:54 : Optional Class in Java 8 30:44 : New Date-Time API in Java 8 32:42 : Metaspace in Java 8 #java8 #javainterviewquestions #java8features #functionalinterfacejava #streamapiinjava8 #lambdaexpressions #optionalclass #javainterviewprep #corejava #javadeveloper Instagram :   / the.curious_coder