diff --git a/2025/03/jbang_demo1/App.java b/2025/03/jbang_demo1/App.java
new file mode 100644
index 0000000..bf7f407
--- /dev/null
+++ b/2025/03/jbang_demo1/App.java
@@ -0,0 +1,20 @@
+///usr/bin/env jbang "$0" "$@" ; exit $?
+//DEPS io.quarkus:quarkus-bom:2.4.0.Final@pom
+//DEPS io.quarkus:quarkus-resteasy
+
+import javax.enterprise.context.ApplicationScoped;
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+
+// @ApplicationPath("/hello")
+@Path("")
+@ApplicationScoped
+public class App {
+
+  @GET
+//  @Path("/")
+  public String handleHello() {
+    return "OK";
+  }
+
+}
diff --git a/2025/03/jbang_demo1/OldApp.java b/2025/03/jbang_demo1/OldApp.java
new file mode 100644
index 0000000..93a7e9b
--- /dev/null
+++ b/2025/03/jbang_demo1/OldApp.java
@@ -0,0 +1,19 @@
+///usr/bin/env jbang "$0" "$@" ; exit $?
+//DEPS org.wildfly.bom:wildfly-expansion:35.0.1.Final@pom
+//DEPS jakarta.ws.rs:jakarta.ws.rs-api
+//DEPS jakarta.enterprise:jakarta.enterprise.cdi-api
+
+import jakarta.enterprise.context.*;
+import jakarta.ws.rs.*;
+import jakarta.ws.rs.core.*;
+
+@ApplicationPath("/")
+@ApplicationScoped
+public class App extends Application {
+
+  @Path("/hello")
+  public String handleHello() {
+    return "OK";
+  }
+
+}
diff --git a/2025/03/jbang_demo1/README.md b/2025/03/jbang_demo1/README.md
new file mode 100644
index 0000000..2884c17
--- /dev/null
+++ b/2025/03/jbang_demo1/README.md
@@ -0,0 +1,21 @@
+# Jbang demo
+
+## How to install Jbang
+
+1. Get it from https://sdkman.io/
+2. Install with curl -s "https://get.sdkman.io" | bash
+
+## How to run it
+
+Without debugging
+
+```
+jbang App.java
+```
+
+with debugging
+
+```
+jbang --verbose run App.java
+```
+