Different between public JRE and private JRE

Different between public JRE AND private JRE

• Private JRE is always being available in the JDK and Public JRE is available outside the JDK.
• By using private JRE we can run any .class file directly but executable file can’t be run in the private JRE.

After the installation of JDK the home folder will be C drive program file.

C:\Program Files\Java\jdk 1.8.0

• Tools under the JDK

C:\Program Files\Java\jdk 1.8.0\bin

• Private JRE under the JDK

C:\Program Files\Java\jdk 1.8.0\jre

• JVM in the JRE

C:\Program Files\Java\jdk 1.8.0\jre\bin

• Library in the JRE

C:\Program Files\Java\jdk 1.8.0\jre\lib\rt.jar

• In JDK is 32 bit version then will be installed in the program files(x86).
• In JDK is 64 bit version then will be installed in the program files.

• In the JRE\bin there is exe named java.exe that it use to start the JVM.
• JVM is not the single files but it is the collective from of the multiple .dll files and .exe files exist in the JRE\bin.
• JAR is the tool in the JDK which is used to compress the contents of the folder and makes the .jar file.
• rt.jar is the compressed file that contains the java library class.