feat: java (#23)

Author: jeliasson

.github/workflows/java.yaml

@@ -0,0 +1,24 @@
+name: Java
+
+on:
+  push:
+    branches:
+      - main
+      - feature/**
+      - fix/**
+
+    paths:
+      - '.github/workflows/java.yaml'
+      - 'hello-world/java/**'
+
+jobs:
+  build:
+    name: Test
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Test
+        run: make java

README.md

@@ -13,6 +13,7 @@ This is an over-engineered "[Hello, World!](https://en.wikipedia.org/wiki/%22Hel
 | [Dockerfile](hello-world/dockerfile) | [![Dockerfile](https://github.com/jeliasson/hello-world/actions/workflows/dockerfile.yaml/badge.svg?branch=main)](https://github.com/jeliasson/hello-world/actions/workflows/dockerfile.yaml) |
 | [Go](hello-world/go)                 | [![Go](https://github.com/jeliasson/hello-world/actions/workflows/go.yaml/badge.svg?branch=main)](https://github.com/jeliasson/hello-world/actions/workflows/go.yaml)                         |
 | [HTML](hello-world/html)             | [![HTML](https://github.com/jeliasson/hello-world/actions/workflows/html.yaml/badge.svg?branch=main)](https://github.com/jeliasson/hello-world/actions/workflows/html.yaml)                   |
+| [Java](hello-world/java)             | [![Java](https://github.com/jeliasson/hello-world/actions/workflows/java.yaml/badge.svg?branch=main)](https://github.com/jeliasson/hello-world/actions/workflows/java.yaml)                   |
 | [JavaScript](hello-world/javascript) | [![JavaScript](https://github.com/jeliasson/hello-world/actions/workflows/javascript.yaml/badge.svg?branch=main)](https://github.com/jeliasson/hello-world/actions/workflows/javascript.yaml) |
 | [PHP](hello-world/php)               | [![PHP](https://github.com/jeliasson/hello-world/actions/workflows/php.yaml/badge.svg?branch=main)](https://github.com/jeliasson/hello-world/actions/workflows/php.yaml)                      |
 | [Python](hello-world/python)         | [![Python](https://github.com/jeliasson/hello-world/actions/workflows/python.yaml/badge.svg?branch=main)](https://github.com/jeliasson/hello-world/actions/workflows/python.yaml)             |

hello-world/java/HelloWorld.java

@@ -0,0 +1,5 @@
+public class HelloWorld {
+    public static void main(String[] args) {
+        System.out.println("Hello, World!");
+    }
+}

hello-world/java/Makefile

@@ -0,0 +1,14 @@
+.SILENT:
+
+all: build prepare run clean
+
+build:
+	javac HelloWorld.java
+
+prepare:
+
+run:
+	java HelloWorld
+
+clean:
+	rm -f *.class