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Interview Q&A / Java

INTERVIEW Q&A · 72 QUESTIONS

Java interview questions

Collections, the JVM, strings, exceptions and threads, the backbone of most campus placement rounds.

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  1. What is the difference between JDK, JRE and JVM?

    The JVM runs Java bytecode. The JRE is the JVM plus the standard libraries needed to run a program. The JDK is the JRE plus developer tools such as the javac compiler, so you need the JDK to write and build Java, and only a runtime to run it.

    BeginnerIn-depth3 min read