diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/anyof_model.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/anyof_model.mustache
index 8239a303ffb8..b54b371a1223 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/anyof_model.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/anyof_model.mustache
@@ -24,7 +24,7 @@ import {{invokerPackage}}.JSON;
 {{>additionalModelTypeAnnotations}}{{>generatedAnnotation}}{{>xmlAnnotation}}
 @JsonDeserialize(using={{classname}}.{{classname}}Deserializer.class)
 @JsonSerialize(using = {{classname}}.{{classname}}Serializer.class)
-public class {{classname}} extends AbstractOpenApiSchema{{#vendorExtensions.x-implements}}, {{{.}}}{{/vendorExtensions.x-implements}} {
+public class {{classname}} extends AbstractOpenApiSchema{{#vendorExtensions.x-implements}} implements {{{.}}}{{^-last}}, {{/-last}}{{/vendorExtensions.x-implements}} {
     private static final Logger log = Logger.getLogger({{classname}}.class.getName());
 
     public static class {{classname}}Serializer extends StdSerializer<{{classname}}> {
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/oneof_model.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/oneof_model.mustache
index 50c1c60efc54..0232e2e60597 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/oneof_model.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/oneof_model.mustache
@@ -26,7 +26,7 @@ import {{invokerPackage}}.JSON;
 {{>additionalModelTypeAnnotations}}{{>generatedAnnotation}}{{>xmlAnnotation}}
 @JsonDeserialize(using = {{classname}}.{{classname}}Deserializer.class)
 @JsonSerialize(using = {{classname}}.{{classname}}Serializer.class)
-public class {{classname}} extends AbstractOpenApiSchema{{#vendorExtensions.x-implements}}, {{{.}}}{{/vendorExtensions.x-implements}} {
+public class {{classname}} extends AbstractOpenApiSchema{{#vendorExtensions.x-implements}} implements {{{.}}}{{^-last}}, {{/-last}}{{/vendorExtensions.x-implements}} {
     private static final Logger log = Logger.getLogger({{classname}}.class.getName());
 
     public static class {{classname}}Serializer extends StdSerializer<{{classname}}> {
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/jersey3/anyof_model.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/jersey3/anyof_model.mustache
index 8239a303ffb8..b54b371a1223 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/jersey3/anyof_model.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/jersey3/anyof_model.mustache
@@ -24,7 +24,7 @@ import {{invokerPackage}}.JSON;
 {{>additionalModelTypeAnnotations}}{{>generatedAnnotation}}{{>xmlAnnotation}}
 @JsonDeserialize(using={{classname}}.{{classname}}Deserializer.class)
 @JsonSerialize(using = {{classname}}.{{classname}}Serializer.class)
-public class {{classname}} extends AbstractOpenApiSchema{{#vendorExtensions.x-implements}}, {{{.}}}{{/vendorExtensions.x-implements}} {
+public class {{classname}} extends AbstractOpenApiSchema{{#vendorExtensions.x-implements}} implements {{{.}}}{{^-last}}, {{/-last}}{{/vendorExtensions.x-implements}} {
     private static final Logger log = Logger.getLogger({{classname}}.class.getName());
 
     public static class {{classname}}Serializer extends StdSerializer<{{classname}}> {
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/jersey3/oneof_model.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/jersey3/oneof_model.mustache
index de29a873b638..043d75e97619 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/jersey3/oneof_model.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/jersey3/oneof_model.mustache
@@ -26,7 +26,7 @@ import {{invokerPackage}}.JSON;
 {{>additionalModelTypeAnnotations}}{{>generatedAnnotation}}{{>xmlAnnotation}}
 @JsonDeserialize(using = {{classname}}.{{classname}}Deserializer.class)
 @JsonSerialize(using = {{classname}}.{{classname}}Serializer.class)
-public class {{classname}} extends AbstractOpenApiSchema{{#vendorExtensions.x-implements}}, {{{.}}}{{/vendorExtensions.x-implements}} {
+public class {{classname}} extends AbstractOpenApiSchema{{#vendorExtensions.x-implements}} implements {{{.}}}{{^-last}}, {{/-last}}{{/vendorExtensions.x-implements}} {
     private static final Logger log = Logger.getLogger({{classname}}.class.getName());
 
     public static class {{classname}}Serializer extends StdSerializer<{{classname}}> {