https://github.com/grokify/jbang-examples
Quick tutorial on using JBang to create CLI apps in Java.
https://github.com/grokify/jbang-examples
cli java jbang
Last synced: 3 months ago
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Quick tutorial on using JBang to create CLI apps in Java.
- Host: GitHub
- URL: https://github.com/grokify/jbang-examples
- Owner: grokify
- License: mit
- Created: 2023-09-04T01:12:16.000Z (almost 2 years ago)
- Default Branch: main
- Last Pushed: 2024-06-01T14:23:35.000Z (about 1 year ago)
- Last Synced: 2024-10-05T22:41:17.330Z (9 months ago)
- Topics: cli, java, jbang
- Language: Java
- Homepage:
- Size: 36.1 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# JBang Examples
This is a collection of examples to create CLI apps using Java with JBang.
* Project: [https://github.com/jbangdev/jbang](https://github.com/jbangdev/jbang)
* Organization: [https://github.com/jbangdev](https://github.com/jbangdev)
## Install OpenJDK
Install from [https://jdk.java.net/](https://jdk.java.net/)
On MacOS, a file like the following will be downloaded:
`openjdk-20.0.2_macos-aarch64_bin.tar.gz`
Opening this will result in a directory `jdk-20.0.2.jdk`.
Move this to `$HOME/openjdk`.
```
% cat > .zshrc
export JAVA_HOME=$HOME/openjdk/jdk-20.0.2.jdk/Contents/Home
export PATH=$JAVA_HOME/bin:$PATH
```
Run Java to verify it's working:
```
% java --version
openjdk 20.0.2 2023-07-18
OpenJDK Runtime Environment (build 20.0.2+9-78)
OpenJDK 64-Bit Server VM (build 20.0.2+9-78, mixed mode, sharing)
```
Also consider placing this in `/usr/local`.
See more: [https://www.codejava.net/java-se/install-openjdk-18-on-macos](https://www.codejava.net/java-se/install-openjdk-18-on-macos)
## Install JBang
`% curl -Ls https://sh.jbang.dev | bash -s - app setup`
or
`% brew install jbangdev/tap/jbang`
See more: [https://www.jbang.dev/documentation/guide/latest/installation.html](https://www.jbang.dev/documentation/guide/latest/installation.html)
## Hello World
`% jbang helloworld.java`
or
```
% chmod +x helloworld.java
% ./helloworld.java jbang!
```
See more: [https://www.jbang.dev/documentation/guide/latest/usage.html](https://www.jbang.dev/documentation/guide/latest/usage.html)
## Dependencies
The [`log4j`](log4j) and [`mysql`](mysql) examples showcase the use of dependencies.
See more: [https://www.jbang.dev/documentation/guide/latest/dependencies.html](https://www.jbang.dev/documentation/guide/latest/dependencies.html)
## Unit Tests
https://github.com/jbangdev/jbang/discussions/424
## Credits
The logo, `helloworld`, and `log4j` examples are from the JBang docs:
1. logo: [readme.adoc](https://github.com/jbangdev/jbang)
1. `helloworld`: [Usage](https://www.jbang.dev/documentation/guide/latest/usage.html)
1. `log4j`: [Dependencies](https://www.jbang.dev/documentation/guide/latest/dependencies.html)