CODEWITHSUNDEEP
java-11nashorngraalvm
Ostap Bender
Ostap Bender

Reputation: 145

Apache Ant with Graal VM

We use Apache Ant with Nashorn JavaScript Engine, which became deprecated and removed in jdk 15 and up. I trying find how to switch from Nashorn to Graal VM and didn't find any usable information even on Apache web-site. Please advise which jars I need and were should I put them. what need to be changed in code we have. If somebody already did it, please share your experience. I have a sample, which run against jdk1.8.0_311:

<?xml version="1.0" ?>
<project name="test" default="test">
    <property environment="env"/>   
    <target name="test" >
        <script language="javascript">          
            <![CDATA[
            load("nashorn:mozilla_compat.js");
            importPackage(java.time);
            var today = new Date();
            var date = today.getFullYear()+'-'+(today.getMonth()+1)+'-'+today.getDate();
            self.log("This script is for Test Of Nashorn Javascript Engine");
            print ("Today is: " + date );
            ]]>
        </script>
    </target>
</project>

Result looks like:

test:
   [script] Warning: Nashorn engine is planned to be removed from a future JDK release
   [script] This script is for Test Of Nashorn Javascript Engine
   [script] Today is: 2021-11-3

BUILD SUCCESSFUL
Total time: 0 seconds

Upvotes: 5

Views: 3663

Answers (4)

Quentin Meek
Quentin Meek

Reputation: 11

I'm running Netbeans 24 on Win 10 with Graal JDK 21. I solved this problem as follows:

Downloaded the following jars from Maven https://mvnrepository.com/ (I actually just Googled each file name and it brought me to the Maven location for each file)

nashorn-core-15.4.jar
asm-9.4.jar
asm-util-9.4.jar
asm-commons-9.4.jar
asm-tree-9.4.jar

I put these .jars in the following folder:

C:\Program Files\NetBeans-24\netbeans\extide\ant\lib

In Netbeans Tools>Options>Ant I set Verbosity Level to Debug, ran my program, then switched it back to Normal, not really sure if this is necessary. Restarting Netbeans isn't as bad idea either.

Upvotes: 0

user27234081
user27234081

Reputation: 1

Add nashorn-core-15.4.jar, asm-9.7.jar, asm-util-9.7.jar, asm-tree-9.7.jar, asm-commons-9.7.jar to the ant\lib folder to work as before.

Upvotes: 0

swyrik
swyrik

Reputation: 314

Solution 1

If you are using JDK 15 or above. Please add the below jars to the path.

enter image description here

Solution 2

Using Graal VM Jars

Use the above jars and pass them as a classpathref.

enter image description here

Upvotes: 7

Attila Szegedi
Attila Szegedi

Reputation: 4565

You could also add standalone Nashorn as a dependency to your Ant build; putting it in your Ant lib directory should work. By default that's $ANT_HOME/lib but some Ant installations use a different location, e.g. homebrew-installed Ant will use /usr/local/share/ant. If you don't want to put it in the lib, you can also put it with your project and use <classpath> or <classpathref> within the <script> tag to point to it.

Mind you, standalone Nashorn also needs ASM 7.3.1 on the classpath. JARs for both can be downloaded from Maven Central.

Upvotes: 4

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