Install JBang on Linux

curl -Ls https://sh.jbang.dev | bash -s - app setup

Upgrade JBang

jbang version --update

Init a JBang Script

// --template=hello
jbang init hello.java

Execute a JBang Script

jbang example.java

Debug a script

jbang --debug helloworld.java

Edit a JBang script

jbang edit -b foo.java

Run a Java class in a JAR file

jbang file.jar --main=com.App

Run a Class using Maven GAV

jbang group:artifact:version --main=com.App

Run a Java Snippet

echo "hello world" | jbang -c 'lines().forEach(s->println(s.substring(6)))`

Create an Executable JAR

jbang export portable MyApp.java

Generate the Maven POM

jbang export mavenrepo --force -O target --group=com.sample -Dartifact=example -Dversion=1.0 MyApp.java

Add Dependency

//DEPS log4j:log4j:1.2.17

Add a GitHub Dependency

//DEPS https://github.com/DiUS/java-faker

Add BOM Dependency

//DEPS io.quarkus:quarkus-bom:1.11.0.Final@pom
//DEPS io.quarkus:quarkus-resteasy

Add JAR/Source Dependency

//DEPS myapp.jar 
//DEPS myclass.java

Use System Properties in Comments

//DEPS group:artifact${version}

Use Env Vars in Comments

//DEPS group:artifact${env.version}

Pass Dependencies to jbang

jbang --deps g1:a1:v1,g2:a2:v2 test.java

Add File Resources

//FILES resource.properties
//FILES META-INF/resources/index.html=index.html

Add Manifest

//MANIFEST version=${version:unknown}

Set Quarkus Properties

//Q:CONFIG quarkus.datasource.db-kind=postgresql

Remote file expansion [1]

jbang CountWords.java %https://github.com/dwyl/english-words/raw/master/words.txt

Add Repository

//REPOS mavencentral,acme=http://maven.acme.repo

Add Java Sources

//SOURCES App.java
//SOURCES othernested/*.java

JDK Configuration

//JAVA 11  forces use of Java 11.
//JAVA 13+ Java 13 or higher will be used.

Install a JDK

jbang jdk install 17

Install JDK from your Machine

jbang jdk install 17 `sdk home java 17.0.4.1-tem`

Uninstall JDK

jbang jdk uninstall 14

List JDKs

jbang jdk list

Set default JDK

jbang jdk default 12

java / javac Options

//JAVAC_OPTIONS -source 11
//JAVA_OPTIONS -Xms128m -Xmx512m

Install a JBang App

jbang app install CamelJBang@apache/camel

List Available Apps

jbang app list