What is difference between JDK,JRE and JVM

JVM is acronym for  Java Virtual machine,it is an  abstract machine which  provides the runtime environment in  which java bytecode can be executed.

JVMs are available  for many hardware and software platform (so JVM is platforms dependent).



JRE  is  java runtime environment . it is used to  provide  runtime environment. it is  the implementation of JVM.  it is physically exists.



JDK  is acronym of java development kit. it is physically exist.