Fix issue in Java migration in dev-mode

Fixes: quarkusio#36299
(cherry picked from commit 7e23cf5)

extensions/flyway/deployment/src/main/java/io/quarkus/flyway/FlywayProcessor.java

@@ -120,7 +120,9 @@ MigrationStateBuildItem build(BuildProducer<FeatureBuildItem> featureProducer,
             Location applicationMigrationLocation = new Location(applicationMigration);
             String applicationMigrationPath = applicationMigrationLocation.getPath();
 
-            if (applicationMigrationPath != null) {
+            if ((applicationMigrationPath != null) &&
+            // we don't include .class files in the watched files because that messes up live reload
+                    !applicationMigrationPath.endsWith(".class")) {
                 hotDeploymentProducer.produce(new HotDeploymentWatchedFileBuildItem(applicationMigrationPath));
             }
         }

extensions/flyway/deployment/src/test/java/io/quarkus/flyway/test/FlywayExtensionWithJavaMigrationDevModeTest.java

@@ -0,0 +1,40 @@
+package io.quarkus.flyway.test;
+
+import static io.restassured.RestAssured.get;
+import static org.hamcrest.Matchers.is;
+
+import java.sql.SQLException;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import db.migration.V1_0_1__Update;
+import db.migration.V1_0_2__Update;
+import io.quarkus.test.QuarkusDevModeTest;
+
+public class FlywayExtensionWithJavaMigrationDevModeTest {
+
+    @RegisterExtension
+    static final QuarkusDevModeTest config = new QuarkusDevModeTest()
+            .withApplicationRoot((jar) -> jar
+                    .addClasses(V1_0_1__Update.class, V1_0_2__Update.class,
+                            FlywayExtensionWithJavaMigrationDevModeTestEndpoint.class)
+                    .addAsResource("db/migration/V1.0.0__Quarkus.sql")
+                    .addAsResource("clean-and-migrate-at-start-config.properties", "application.properties"));
+
+    @Test
+    public void test() throws SQLException {
+        get("/fly")
+                .then()
+                .statusCode(200)
+                .body(is("2/1.0.2"));
+
+        config.modifySourceFile(FlywayExtensionWithJavaMigrationDevModeTestEndpoint.class, s -> s.replace("/fly", "/flyway"));
+
+        get("/flyway")
+                .then()
+                .statusCode(200)
+                .body(is("2/1.0.2"));
+    }
+
+}

extensions/flyway/deployment/src/test/java/io/quarkus/flyway/test/FlywayExtensionWithJavaMigrationDevModeTestEndpoint.java

@@ -0,0 +1,37 @@
+package io.quarkus.flyway.test;
+
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.Statement;
+
+import jakarta.inject.Inject;
+import jakarta.ws.rs.GET;
+import jakarta.ws.rs.Path;
+
+import org.flywaydb.core.Flyway;
+
+import io.agroal.api.AgroalDataSource;
+
+@Path("/fly")
+public class FlywayExtensionWithJavaMigrationDevModeTestEndpoint {
+
+    @Inject
+    AgroalDataSource defaultDataSource;
+
+    @Inject
+    Flyway flyway;
+
+    @GET
+    public String result() throws Exception {
+        int count = 0;
+        try (Connection connection = defaultDataSource.getConnection(); Statement stat = connection.createStatement()) {
+            try (ResultSet countQuery = stat.executeQuery("select count(1) from quarked_flyway")) {
+                countQuery.first();
+                count = countQuery.getInt(1);
+            }
+        }
+        String currentVersion = flyway.info().current().getVersion().toString();
+
+        return count + "/" + currentVersion;
+    }
+}