Answer» - JDK- For making java programs, we need some tools that are provided by JDK (Java Development Kit). JDK is the package that contains VARIOUS tools, COMPILER, Java Runtime Environment, etc.
- JRE - To execute the java program we need an environment. (Java Runtime Environment) JRE contains a library of Java classes + JVM. What are JAVA Classes? It contains some predefined methods that help Java programs to use that FEATURE, build and execute. For example - there is a system class in java that contains the print-stream method, and with the help of this, we can print something on the console.
- JVM - (Java Virtual MACHINE) JVM is a part of JRE that executes the Java program at the end. Actually, it is part of JRE, but it is software that converts bytecode into machine-executable code to execute on HARDWARE.
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