Java Architecture::

The Java Development Kit (JDK):

• The Java Development Kit (JDK) is a software development environment used to develop, compile, debug, and package Java applications.
  

• It includes the Java Runtime Environment (JRE), the Java Virtual Machine (JVM), and development tools such as the Java compiler (javac) and debugger.

• The JDK is used for building,testing,and running java applications it's essential for developers to;

1. write java code.
2. compile java code into bytecode.
3. run java applications.

JRE (Java Runtime Environment):

• JRE (Java Runtime Environment) is a software package that provides the environment required to run Java applications.

• It includes the Java Virtual Machine (JVM) and core Java class libraries, but it does not include development tools like the compiler.
  

JVM (Java Virtual Machine):

• JVM (Java Virtual Machine) is a virtual machine that executes Java bytecode and enables Java programs to run on any operating system without modification.

• It converts Java bytecode into machine-specific instructions and manages memory, security, and execution.
  

Reference:

• https://www.simplilearn.com/tutorials/java-tutorial/jdk-in-java#what_is_jdk_in_java

• https://www.geeksforgeeks.org/java/jdk-in-java/