nb-javac is a backport of OpenJDK "javac", i.e., the Java compiler. nbjavac takes sources from the latest JDK and backports them to run on JDK8+. It allows to run the latest OpenJDK compiler on older JDKs - as old as JDK8 while being 1:1 identical with the official javac. Use nb-javac to execute the latest Java language compiler on old JDKs!

• Git
• Ant 1.9.9 or above
• JDK 17 to build
• JDK 8 to test
• Apache Maven to publish to Maven central

Detailed description of the build process is available in a separate development documentation. Here are just the most straigtforward steps to get the final artifacts.

$ git clone https://github.com/jaroslavtulach/nb-javac

$ git checkout <release_tag_name> 

$ JAVA_HOME=/jdk-17/ ant -f ./make/langtools/netbeans/nb-javac clean jar

Two jars namely nb-javac-*-api.jar and nb-javac-*-impl.jar are going to appear at location ./make/langtools/netbeans/nb-javac/dist/. It is also possible to sanity test the generated Javac on JDK8:

$ JAVA_HOME=/jdk-8/ ant -f ./make/langtools/netbeans/nb-javac test

$ JAVA_HOME=/jdk-17/ ant -f ./make/langtools/netbeans/nb-javac zip-nb-javac-sources

1. Aquire an account for OSSRH from sonatype and get access to the target groupId See here: https://central.sonatype.org/pages/ossrh-guide.html

2. Configure the maven installation so that the credentials are made available for the server with the id oss.sonatype.org

3. Run

   JAVA_HOME=/jdk-17/ ant -f ./make/langtools/netbeans/nb-javac publish-to-ossrh-snapshots -Dmaven.groupId=your.grp.id
   

   to publish snapshot artifacts (https://oss.sonatype.org/content/repositories/snapshots/)

4. Run

   JAVA_HOME=/jdk-17/ ant -f ./make/langtools/netbeans/nb-javac publish-to-maven-central -Dmaven.groupId=your.grp.id
   

   to stage the release, which will get promoted to maven central, after it has been manually released.

cp nb-javac/make/langtools/netbeans/nb-javac/dist/nb-javac-$ver-api.jar netbeans/java/libs.javacapi/external/nb-javac-$ver-api.jar
cp nb-javac/make/langtools/netbeans/nb-javac/dist/nb-javac-$ver-impl.jar netbeans/java/libs.javacimpl/external/nb-javac-$ver-impl.jar

cp nb-javac/make/langtools/netbeans/nb-javac/dist/nb-javac-$ver-impl.jar netbeans/nbbuild/testuserdir/modules/ext/nb-javac-$ver-impl.jar
cp nb-javac/make/langtools/netbeans/nb-javac/dist/nb-javac-$ver-api.jar netbeans/nbbuild/testuserdir/modules/ext/nb-javac-$ver-api.jar
touch netbeans/nbbuild/testuserdir/.lastmodified

• https://cwiki.apache.org/confluence/display/NETBEANS/Overview%3A+nb-javac
• https://cwiki.apache.org/confluence/display/NETBEANS/Release+Schedule

• Email [email protected] - the NetBeans founder and maintainer of nb-javac.
• Subscribe or mail the [email protected] list - Join development discussions, propose new ideas and connect with contributors.

See the Contributing Policy

See the Security Policy