What are JVM and JRE

JVM (Java Virtual Machine):

The JVM is a virtual machine that converts Java bytecode into machine code. When you compile a Java program, its compilation is done by the JVM. The JVM provides the ability to run Java code on any platform, thus ensuring Java's portability. This means that without the JVM, your Java code cannot run on any system.

JRE (Java Runtime Environment):

The JRE is a collection of necessary libraries, Java classes, the Java runtime library, and other files for the JVM. The JRE provides the ability to run any Java application without needing to create a program. Without it, problems can arise in running Java applications.

The use of JVM and JRE typically happens as follows: when you run a Java application, the JVM is instantiated, and the JRE fulfills its requirements. If you are a Java programmer or studying Java programming, understanding JVM and JRE is important.

Thus, both JVM and JRE play a significant role in the operation of the Java platform, making Java portable and applications executable (runnable).