diff --git a/virtual-threads-examples/src/main/java/io/vertx/example/virtualthreads/HttpClientExample.java b/virtual-threads-examples/src/main/java/io/vertx/example/virtualthreads/HttpClientExample.java
index dd4a39292..3794512f6 100644
--- a/virtual-threads-examples/src/main/java/io/vertx/example/virtualthreads/HttpClientExample.java
+++ b/virtual-threads-examples/src/main/java/io/vertx/example/virtualthreads/HttpClientExample.java
@@ -18,18 +18,18 @@ public static void main(String[] args) throws Exception {
 
   @Override
   public void start() {
-    HttpServer server = vertx.createHttpServer();
+    var server = vertx.createHttpServer();
     server.requestHandler(request -> {
       request.response().end("Hello World");
     });
     await(server.listen(8080, "localhost"));
 
     // Make a simple HTTP request
-    HttpClient client = vertx.createHttpClient();
-    HttpClientRequest req = await(client.request(HttpMethod.GET, 8080, "localhost", "/"));
-    HttpClientResponse resp = await(req.send());
-    int status = resp.statusCode();
-    Buffer body = await(resp.body());
+    var client = vertx.createHttpClient();
+    var req = await(client.request(HttpMethod.GET, 8080, "localhost", "/"));
+    var resp = await(req.send());
+    var status = resp.statusCode();
+    var body = await(resp.body());
     System.out.println("Got response status=" + status + " body='" + body + "'");
   }
 }
diff --git a/virtual-threads-examples/src/main/java/io/vertx/example/virtualthreads/MovieRatingService.java b/virtual-threads-examples/src/main/java/io/vertx/example/virtualthreads/MovieRatingService.java
index ab2c1f0d8..d23fd6171 100644
--- a/virtual-threads-examples/src/main/java/io/vertx/example/virtualthreads/MovieRatingService.java
+++ b/virtual-threads-examples/src/main/java/io/vertx/example/virtualthreads/MovieRatingService.java
@@ -18,7 +18,7 @@
 public class MovieRatingService extends AbstractVerticle {
 
   public static void main(String[] args) throws Exception {
-    Vertx vertx = Vertx.vertx();
+    var vertx = Vertx.vertx();
     vertx.deployVerticle(MovieRatingService.class, new DeploymentOptions().setThreadingModel(ThreadingModel.VIRTUAL_THREAD))
       .toCompletionStage()
       .toCompletableFuture()
@@ -50,12 +50,12 @@ public void start() {
       .put("max_pool_size-loop", 30)
     );
 
-    for (String statement : DB_STATEMENTS) {
+    DB_STATEMENTS.forEach(statement -> {
       await(client.query(statement).execute());
-    }
+    });
 
     // Build Vert.x Web router
-    Router router = Router.router(vertx);
+    var router = Router.router(vertx);
     router.get("/movie/:id").handler(this::getMovie);
     router.get("/rateMovie/:id").handler(this::rateMovie);
     router.get("/getRating/:id").handler(this::getRating);
@@ -68,8 +68,8 @@ public void start() {
 
   // Send info about a movie
   private void getMovie(RoutingContext ctx) {
-    String id = ctx.pathParam("id");
-    RowSet<Row> rows = await(client.preparedQuery("SELECT TITLE FROM MOVIE WHERE ID=?").execute(Tuple.of(id)));
+    var id = ctx.pathParam("id");
+    var rows = await(client.preparedQuery("SELECT TITLE FROM MOVIE WHERE ID=?").execute(Tuple.of(id)));
     if (rows.size() == 1) {
       ctx.response()
         .putHeader("Content-Type", "application/json")
@@ -84,8 +84,8 @@ private void getMovie(RoutingContext ctx) {
 
   // Rate a movie
   private void rateMovie(RoutingContext ctx) {
-    String movie = ctx.pathParam("id");
-    int rating = Integer.parseInt(ctx.queryParam("rating").get(0));
+    var movie = ctx.pathParam("id");
+    var rating = Integer.parseInt(ctx.queryParam("rating").get(0));
     RowSet<Row> rows = await(client.preparedQuery("SELECT TITLE FROM MOVIE WHERE ID=?").execute(Tuple.of(movie)));
     if (rows.size() == 1) {
       await(client.preparedQuery("INSERT INTO RATING (VALUE, MOVIE_ID) VALUES ?, ?").execute(Tuple.of(rating, movie)));
@@ -97,8 +97,8 @@ private void rateMovie(RoutingContext ctx) {
 
   // Get the current rating of a movie
   private void getRating(RoutingContext ctx) {
-    String id = ctx.pathParam("id");
-    RowSet<Row> rows = await(client.preparedQuery("SELECT AVG(VALUE) AS VALUE FROM RATING WHERE MOVIE_ID=?").execute(Tuple.of(id)));
+    var id = ctx.pathParam("id");
+    var rows = await(client.preparedQuery("SELECT AVG(VALUE) AS VALUE FROM RATING WHERE MOVIE_ID=?").execute(Tuple.of(id)));
     ctx.response()
       .putHeader("Content-Type", "application/json")
       .end(new JsonObject()
diff --git a/virtual-threads-examples/src/main/java/io/vertx/example/virtualthreads/SqlClientExample.java b/virtual-threads-examples/src/main/java/io/vertx/example/virtualthreads/SqlClientExample.java
index 5d3b73f55..17ba8c07f 100644
--- a/virtual-threads-examples/src/main/java/io/vertx/example/virtualthreads/SqlClientExample.java
+++ b/virtual-threads-examples/src/main/java/io/vertx/example/virtualthreads/SqlClientExample.java
@@ -10,8 +10,8 @@
 public class SqlClientExample extends AbstractVerticle {
 
   public static void main(String[] args) throws Exception {
-    Vertx vertx = Vertx.vertx();
-    try (PostgreSQLContainer<?> container = new PostgreSQLContainer<>()) {
+    var vertx = Vertx.vertx();
+    try (var container = new PostgreSQLContainer<>()) {
       container.start();
       vertx.deployVerticle(() -> {
           PgConnectOptions connectOptions = new PgConnectOptions()
@@ -42,7 +42,7 @@ public void start() {
     // insert some test data
     await(pool.query("insert into test values (1, 'Hello'), (2, 'World')").execute());
     // query some data
-    RowSet<Row> rows = await(pool.query("select * from test").execute());
+    var rows = await(pool.query("select * from test").execute());
     for (Row row : rows) {
       System.out.println("row = " + row.toJson());
     }
diff --git a/virtual-threads-examples/src/main/java/io/vertx/example/virtualthreads/WebClientExample.java b/virtual-threads-examples/src/main/java/io/vertx/example/virtualthreads/WebClientExample.java
index deb152bbe..9ff4df76a 100644
--- a/virtual-threads-examples/src/main/java/io/vertx/example/virtualthreads/WebClientExample.java
+++ b/virtual-threads-examples/src/main/java/io/vertx/example/virtualthreads/WebClientExample.java
@@ -15,7 +15,7 @@
 public class WebClientExample extends AbstractVerticle {
 
   public static void main(String[] args) throws Exception {
-    Vertx vertx = Vertx.vertx();
+    var vertx = Vertx.vertx();
     vertx.deployVerticle(WebClientExample.class, new DeploymentOptions()
         .setThreadingModel(ThreadingModel.VIRTUAL_THREAD))
       .toCompletionStage()
@@ -25,20 +25,20 @@ public static void main(String[] args) throws Exception {
 
   @Override
   public void start() {
-    HttpServer server = vertx.createHttpServer();
+    var server = vertx.createHttpServer();
     server.requestHandler(request -> {
       request.response().end("Hello World");
     });
     await(server.listen(8080, "localhost"));
 
     // Make a simple HTTP request
-    WebClient client = WebClient.create(vertx);
-    HttpResponse<Buffer> resp = await(client
+    var client = WebClient.create(vertx);
+    var resp = await(client
       .get(8080, "localhost", "/")
       .expect(ResponsePredicate.SC_OK)
       .send());
-    int status = resp.statusCode();
-    Buffer body = resp.body();
+    var status = resp.statusCode();
+    var body = resp.body();
     System.out.println("Got response status=" + status + " body='" + body + "'");
   }
 }