1.0.3 Add a help message for easier usage

jbang/Splicer.java

@@ -27,6 +27,14 @@ public class Splicer {
 	private static final Logger logger = Logger.getLogger(Splicer.class.getName());
 
 	public static void main(String[] args) throws InterruptedException, JsonProcessingException {
+		
+		if (args.length == 0) {
+			System.out.println("This program allows you to run several commands at the same time."
+					+ "\n\nUsage: Splicer.java cmd1 cmd2 cmd3 ..."
+					+ "\n\nExample: ./Splicer.java \"ls -l\" \"df -kh\"\n");
+			return;
+		}
+		
 		ExecutorService executorService = Executors.newFixedThreadPool(args.length);
 
 		List<Callable<ExecutionResult>> callables = List.of(args).stream()

pom.xml

@@ -4,7 +4,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>cyou.vidconnect</groupId>
 	<artifactId>splicer</artifactId>
-	<version>1.0.2</version>
+	<version>1.0.3</version>
 	<name>splicer</name>
 	<description>Run multiple shell commands concurrently</description>
 	<properties>

src/main/java/cyou/vidconnect/splicer/Main.java

@@ -24,6 +24,14 @@ public class Main {
 	private static final Logger logger = Logger.getLogger(Main.class.getName());
 
 	public static void main(String[] args) throws InterruptedException, JsonProcessingException {
+		
+		if (args.length == 0) {
+			System.out.println("This program allows you to run several commands at the same time."
+					+ "\n\nUsage: java -jar splicer.jar cmd1 cmd2 cmd3 ..."
+					+ "\n\nExample: java -jar splicer.jar \"ls -l\" \"df -kh\"\n");
+			return;
+		}
+		
 		ExecutorService executorService = Executors.newFixedThreadPool(args.length);
 
 		List<Callable<ExecutionResult>> callables = List.of(args).stream()