Program runs with jdk but not with jre

Asked Feb 20 '20 at 12:10

Active Feb 20 '20 at 12:10

Viewed 256 times

my program (made in Netbeans) does work fine on my PC where I have jdk-12.0.2

On my other Computer where I had the newest jre1.8.0_241 it did not run, but gave me the errormessage: A JNI Error has occured, please check your installation and try again.

I installed the newest jdk-13.0.2 and now it works.

But what could be the reason for this? When do I need the jdk and when is the jre enough? Or did I mess up somewhere and the jre should've done the job?

Many thanks in advance!

my program is a GUI of a simple text game, so I used only java.awt, java.swing and java.util if this is important

I had a look at this page and I really dont understand why installing the jdk solved my issue with running the program

asked Feb 20 '20 at 12:10

eli44

sorry if this is a stupid question, but could the pom.xml file have to do with this? – eli44 Feb 20 '20 at 12:12
4

Ignore the difference between the JRE and the JDK for now. You built your program using version 12 of Java, and then you tried to run it using version 8 of Java, which is much older. – JonK Feb 20 '20 at 12:14
2

You might have a version conflict. Java 12 bytecode is incompatible with Java 8. – Nicktar Feb 20 '20 at 12:14
1

Try install jre-12.0.2 – John Feb 20 '20 at 12:15
okay, now I feel really stupid.. seems pretty obvious.. But if I go on java java.com why do I get the suggestion to download version 8? Where can I download version 12? – eli44 Feb 20 '20 at 12:22
1

you can download JDK 12 from here : https://www.oracle.com/java/technologies/javase/jdk12-archive-downloads.html – Rahul Goel Feb 20 '20 at 12:24
Java 8 is LTS versión and has suport up 2030. – Egeo Feb 20 '20 at 12:39
is there a jre version 12? or just jdk? – eli44 Feb 20 '20 at 12:42
Inside a JDK folder you can find the JRE folder for that version – Egeo Feb 20 '20 at 13:36
@Egeo That is no longer true as of Java 9. – VGR Feb 20 '20 at 15:21

Program runs with jdk but not with jre

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