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Exception Handling
10 topics · 28 questions
1Exception Handling Fundamentals0/442try-catch-finally0/43try-with-resources & Suppressed Exceptions0/224Custom Exceptions0/115Exception Chaining & Stack Traces0/446Exception Best Practices0/447Spring Exception Handling0/118Exceptions in Constructors & Static Init0/229Common Runtime Exceptions0/4410JVM Exception Internals0/22
1Exception Handling Fundamentals42try-catch-finally43try-with-resources & Suppressed Exceptions24Custom Exceptions15Exception Chaining & Stack Traces46Exception Best Practices47Spring Exception Handling18Exceptions in Constructors & Static Init29Common Runtime Exceptions410JVM Exception Internals2
10 topics28 Qs0%
01Core Java17002OOP3203Collections6704Exception Handling2805Concurrency & Multithreading12706Java Streams, Lambda & Functional Programming32807Spring & Spring Boot2608Transactions3209JPA & Hibernate6910Microservices19411Kafka & Messaging9112DevOps, CI/CD & Tooling13313Database & SQL14114REST API & Web4015Design Patterns & LLD5716Advanced Java7117Coding Problems: DSA49218AWS & Cloud4119Data Engineering19420QA, Testing & SDET4121System Design3522Security2023Behavioral / HR: STAR Method37
10Topics
28Questions
0%Complete
2 of 10 topics
Topics
1Exception Handling Fundamentals0/44
2try-catch-finally0/44
3try-with-resources & Suppressed Exceptions0/224Custom Exceptions0/115Exception Chaining & Stack Traces0/446Exception Best Practices0/447Spring Exception Handling0/118Exceptions in Constructors & Static Init0/229Common Runtime Exceptions0/4410JVM Exception Internals0/22

try-catch-finally

Exception Handling·Topic 2 of 10·4 questions
Q1How does the finally block work?

The finally block always executes after try and catch for guaranteed cleanup, except when System.exit() is called, the JVM crashes, Runtime.halt() is invoked, or an infinite loop prevents reaching it.

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Q2Why is throw/return in finally dangerous?

A throw or return in finally silently discards the try block's exception or return value, causing the real error to vanish completely and making debugging impossible.

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Q3How do multiple catch blocks work?

A single try can have multiple catch blocks evaluated top-to-bottom, and specific exceptions must come before general ones because the first matching catch wins.

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Q4What is multi-catch in Java 7+?

Multi-catch (Java 7) combines multiple unrelated exception types in one catch block using the pipe operator, with the caught variable being implicitly final.

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