diff --git a/.changeset/fast-worms-return.md b/.changeset/fast-worms-return.md
new file mode 100644
index 00000000..2e992519
--- /dev/null
+++ b/.changeset/fast-worms-return.md
@@ -0,0 +1,5 @@
+---
+"@openapi-generator-plus/java-jaxrs-server-generator": minor
+---
+
+Generate ApiJaxbJsonProvider as an abstract class so users can modify the implementation without it being overwritten
diff --git a/packages/java-jaxrs-server/src/index.ts b/packages/java-jaxrs-server/src/index.ts
index a74fe975..110a5a1e 100644
--- a/packages/java-jaxrs-server/src/index.ts
+++ b/packages/java-jaxrs-server/src/index.ts
@@ -118,8 +118,10 @@ export const createGenerator: CodegenGeneratorConstructor<JavaGeneratorContext>
 
 		const providerPackagePath = generatorOptions.apiProviderPackage ? packageToPath(generatorOptions.apiProviderPackage) : undefined
 		if (providerPackagePath) {
-			await emit('ApiJaxbJsonProvider', path.join(outputPath, relativeApiImplSourceOutputPath, providerPackagePath, 'ApiJaxbJsonProvider.java'),
+			await emit('AbstractApiJaxbJsonProvider', path.join(outputPath, relativeApiImplSourceOutputPath, providerPackagePath, 'AbstractApiJaxbJsonProvider.java'),
 				{ ...rootContext }, true, hbs)
+			await emit('ApiJaxbJsonProvider', path.join(outputPath, relativeApiImplSourceOutputPath, providerPackagePath, 'ApiJaxbJsonProvider.java'),
+				{ ...rootContext }, false, hbs)
 		}
 
 		if (context.additionalExportTemplates) {
diff --git a/packages/java-jaxrs-server/templates/AbstractApiJaxbJsonProvider.hbs b/packages/java-jaxrs-server/templates/AbstractApiJaxbJsonProvider.hbs
new file mode 100644
index 00000000..294bcbc5
--- /dev/null
+++ b/packages/java-jaxrs-server/templates/AbstractApiJaxbJsonProvider.hbs
@@ -0,0 +1,16 @@
+package {{apiProviderPackage}};
+
+{{>generatedAnnotation}}
+public abstract class AbstractApiJaxbJsonProvider extends com.fasterxml.jackson.{{#if @root.useJakarta}}jakarta.rs{{else}}jaxrs{{/if}}.json.{{#if @root.useJakarta}}JacksonXmlBindJsonProvider{{else}}JacksonJaxbJsonProvider{{/if}} {
+
+	public AbstractApiJaxbJsonProvider() {
+		super();
+
+		this.setMapper(createMapper());
+	}
+
+	protected com.fasterxml.jackson.databind.ObjectMapper createMapper() {
+		{{>frag/jaxbJsonProviderBody}}
+	}
+
+}
diff --git a/packages/java-jaxrs-server/templates/ApiJaxbJsonProvider.hbs b/packages/java-jaxrs-server/templates/ApiJaxbJsonProvider.hbs
index fb7e1207..0b097483 100644
--- a/packages/java-jaxrs-server/templates/ApiJaxbJsonProvider.hbs
+++ b/packages/java-jaxrs-server/templates/ApiJaxbJsonProvider.hbs
@@ -8,15 +8,10 @@ package {{apiProviderPackage}};
 @{{javax}}.ws.rs.Consumes({"application/json; charset=UTF-8", "application/*+json; charset=UTF-8" })
 @{{javax}}.ws.rs.ext.Provider
 {{>hooks/jaxbJsonProviderAnnotations}}
-{{>generatedAnnotation}}
-public class ApiJaxbJsonProvider extends com.fasterxml.jackson.{{#if @root.useJakarta}}jakarta.rs{{else}}jaxrs{{/if}}.json.{{#if @root.useJakarta}}JacksonXmlBindJsonProvider{{else}}JacksonJaxbJsonProvider{{/if}} {
+public class ApiJaxbJsonProvider extends {{apiProviderPackage}}.AbstractApiJaxbJsonProvider {
 
 	public ApiJaxbJsonProvider() {
 		super();
-
-		{{>frag/jaxbJsonProviderBody}}
-
-		this.setMapper(mapper);
 	}
 
 }
diff --git a/packages/java-jaxrs-server/templates/frag/jaxbJsonProviderBody.hbs b/packages/java-jaxrs-server/templates/frag/jaxbJsonProviderBody.hbs
index 53bc1dfd..4bc5e637 100644
--- a/packages/java-jaxrs-server/templates/frag/jaxbJsonProviderBody.hbs
+++ b/packages/java-jaxrs-server/templates/frag/jaxbJsonProviderBody.hbs
@@ -9,3 +9,5 @@ mapper.registerModule(new com.fasterxml.jackson.datatype.jdk8.Jdk8Module());
 /* Support Java time object types */
 mapper.registerModule(new com.fasterxml.jackson.datatype.jsr310.JavaTimeModule());
 mapper.configure(com.fasterxml.jackson.databind.SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
+
+return mapper;