Difference between Java components (JRE, JDK, JVM, JIT, javac)?

Question

It was hard for me to understand the difference between JVM (Java Virtual Machine), JRE (Java Runtime Environment), JDK (Java Development Kit), JIT (Just In Time Compiler), javac (Java Compiler).

Can someone please tell me a good comparison and contrast between all of these?

Answer 1

There are many resources on this topic, these two seem to be a good start:

JDK, JRE, JVM, JIT, javac, java

Difference between JDK, JRE, JVM and JIT

Answer 2

, Google, , JVM, JRE JVM. , ( ).

( ) :

JDK, JRE JVM?

JDK: - Java Development Kit ( JDK) - Kit, () Java-. . ( Java) , ? J-D-K, , JDK .

, JDK - ( ), : i) ( java-) ii) JRE ( Java-). JDK Java.

JRE: - Java Runtime Environment ( JRE) - , ( ) java- ( ) . , , ( ), , . , JRE .

, JRE , Java-, .

JVM: - Java (JVM) JDK, JRE, . , java JRE JDK, JVM JVM Java , ( ). , JVM , JDK JRE. JVM .

, java, , java.

Answer 3

, .



  JDK (Java Developer Kit) - Java, , , JDK , Windows, Linux Mac.

    JPL (Java Runtime Environment) - java, - , Java, , JRE, . Java.

    JVM ( Java) JRE.it JRE.

    JT - , - .     javac - , - Java.


We can conclude a relationship:

JDK = JRE + javac + jconsole + jvisualvm + demo + document + other

JRE = JVM + JAVA binary code + another library + other

JVM = JIT + Other

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