<p>Bytecode version 55 is Java 11. The JavaFX from openjfx that you are using was compiled with Java 11, but you are compiling with Java 8. Java 8 already includes JavaFX, so you don't have to add it via maven from openjfx. So you can either upgrade to OpenJDK Java 11, or remove the openjfx dependency from your project.</p>

CC BY-SA 4.0
2019-09-07T15:17:52.530Z
2019-09-07T15:17:52.530Z
Jim Clarke
<p>I just forked bitcoinj and took the wallettemplate folder outside the bitcoinj folder to run it
i've followed the steps in "getting started" docs
now im stuck in trying to run the wallettemplate
i tried to run it from Intellj but i am getting the following massage :
"BUILD FAILED in 3s
Cause: org/openjfx/gradle/JavaFXPlugin has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0"</p>

<p>Please i need your advice
Many thanks in advance </p>

<bitcoinj>
could'nt run wallettemplate project in bitcoinJ
Fayiz Alsubaie
# could'nt run wallettemplate project in bitcoinJ

(Asked by: username_0 on 2019-06-26)

I just forked bitcoinj and took the wallettemplate folder outside the bitcoinj folder to run it
i've followed the steps in "getting started" docs
now im stuck in trying to run the wallettemplate
i tried to run it from Intellj but i am getting the following massage :
"BUILD FAILED in 3s
Cause: org/openjfx/gradle/JavaFXPlugin has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0"

Please i need your advice
Many thanks in advance

**Tags:** bitcoinj


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## 1 answers

### Answer by username_1 on 2019-09-07. Score: 1

Bytecode version 55 is Java 11. The JavaFX from openjfx that you are using was compiled with Java 11, but you are compiling with Java 8. Java 8 already includes JavaFX, so you don't have to add it via maven from openjfx. So you can either upgrade to OpenJDK Java 11, or remove the openjfx dependency from your project.


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