Difference between JDK, JRE, and JVM
ANS:-JDK, JRE, and JVM are all important components of the Java platform, but they serve different purposes. Here's a detailed explanation of each:
JVM (Java Virtual Machine): JVM is an abstract machine that provides a runtime environment in which Java bytecode can be executed. It acts as an intermediary between the Java code and the computer's hardware, translating Java bytecode into machine code that can be executed by the processor. JVM is a key component of the Java platform and is responsible for ensuring that Java code runs consistently across different platforms and operating systems. JVM provides memory management, garbage collection, and security features, making it a powerful tool for executing Java code.
JRE (Java Runtime Environment): JRE is a software package that includes JVM, along with the Java class libraries and other supporting files required to run Java applications. JRE is used to run Java applications on a user's machine, without the need to compile the code. It provides a runtime environment for Java code to run, but it does not include any development tools.
JDK (Java Development Kit): JDK is a software development kit that includes JRE, along with a set of development tools that are required to develop Java applications. JDK includes a compiler, a debugger, and other tools that are used to write, compile, and test Java code. It is used by developers to create Java applications and applets. JDK is required to write and compile Java code, but it is not required to run Java applications.
In summary, JVM is the virtual machine that executes Java bytecode, JRE is the software package that includes JVM and other supporting files required to run Java applications, and JDK is the software development kit that includes JRE and development tools required to write and compile Java code