Java Programming - MCQ Practice Questions

Java interviews and campus tests lean heavily on object oriented behaviour rather than API recall. This set covers inheritance and polymorphism, interfaces and abstract classes, the collections framework, exception handling, multithreading, string handling, and JVM basics such as garbage collection. Output based questions are included because they expose the gaps that theory questions hide.

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All topics Basics & Syntax OOP in Java Collections Framework Multithreading Exception Handling I/O Streams JDBC Generics Lambda Expressions Spring Framework Basics

Q.21Easy

A developer needs to ensure that exactly 5 threads complete their tasks before proceeding to the next phase. Which synchronization utility is most appropriate?