Understanding JDK, JRE & JVM
JDK Stands for Java Development Kit JDK includes JRE and command-line development tools such as compilers , debuggers etc All the commands such as javac, java, jar, javap etc found in JDK. JDK is a superset of a JRE since it contains JRE with Java compiler, debugger and core classes. JDK is a platform specific software, we have separate installers for Windows, Mac and Unix systems JRE Stands for Java Runtime Environment The JRE provides the libraries, JVM, and other components necessary for you to run java applications. JRE is the implementation of Java virtual machine, it provides platform to execute java programs. If you want to execute java program, you should have JRE installed. JVM Stands for Java Virtual Machine The JVM is an abstract computing machine that has an instruction set and manipulates memory at run time. When we run a program, JVM is responsible to convert Byte code to the machine specific code. The JVM provides hardware and operating syst