Java Interview Guide : 200+ Interview Questions and Answers - Compare JDK vs JVM vs JRE

The video tutorial explains the differences between JDK, JRE, and JVM in the context of Java programming. It outlines the tasks involved in Java programming, such as compiling, running, and debugging programs. The tutorial distinguishes between developers and end-users, explaining their different needs. It details the components of JRE and JDK, highlighting that JRE is needed to run Java programs, while JDK is required for development. The JRE includes the JVM and necessary libraries, whereas the JDK also contains development tools.

What are the three main tasks involved in working with Java programs?

• Writing, editing, and saving

• Compiling, running, and debugging

• Designing, testing, and deploying

• Installing, configuring, and updating

Who primarily needs the JDK?

• End users

• Database managers

• Developers

• System administrators

What is the primary function of the JRE?

• To compile Java code

• To design Java interfaces

• To run Java programs

• To debug Java applications

What does the JVM do within the JRE?

• Compiles Java code

• Manages Java libraries

• Creates Java class files

• Converts bytecode into executable code

Which of the following is included in the JDK but not in the JRE?

• Java compiler

• Java libraries

• Java runtime environment

• Java Virtual Machine