downgraded to java 17

Author: officiallysingh

README.md

@@ -49,7 +49,7 @@ all can be done with zero custom code but by specifying error details in `proper
 
 ## Installation
 
-> **Current version: 1.8** Refer to [Release notes](https://github.com/officiallysingh/spring-boot-problem-handler/releases/tag/1.7) while upgrading
+> **Current version: 1.9** Refer to [Release notes](https://github.com/officiallysingh/spring-boot-problem-handler/releases/tag/1.7) while upgrading
 
 Add the `spring-boot-problem-handler` jar to application dependencies. That is all it takes to get a default working 
 exception handling mechanism in a Spring boot application.
@@ -62,12 +62,12 @@ Maven
 <dependency>
     <groupId>io.github.officiallysingh</groupId>
     <artifactId>spring-boot-problem-handler</artifactId>
-    <version>1.8</version>
+    <version>1.9</version>
 </dependency>
 ```
 Gradle
 ```groovy
-implementation 'io.github.officiallysingh:spring-boot-problem-handler:1.8'
+implementation 'io.github.officiallysingh:spring-boot-problem-handler:1.9'
 ```
 
 It does all hard part, A lot of advices are out of box available which are autoconfigured as `ControllerAdvice`s 

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>io.github.officiallysingh</groupId>
     <artifactId>spring-boot-problem-handler</artifactId>
-    <version>1.8</version>
+    <version>1.9</version>
     <name>spring-boot-problem-handler</name>
     <description>Commons exception handler library</description>
     <url>https://github.com/officiallysingh/spring-boot-problem-handler</url>
@@ -31,7 +31,7 @@
     </developers>
 
     <properties>
-        <java.version>21</java.version>
+        <java.version>17</java.version>
         <spring-boot.version>3.2.5</spring-boot.version>
         <spring-cloud.version>2023.0.1</spring-cloud.version>
         <jakarta.servlet-api.version>6.0.0</jakarta.servlet-api.version>

src/main/java/com/ksoot/problem/spring/advice/application/ApplicationMultiProblemAdviceTrait.java

@@ -37,37 +37,33 @@ default R handleMultiProblem(final MultiProblem exception, final T request) {
           exception.getErrors().stream()
               .map(
                   ex -> {
-                    switch (ex) {
-                      case Problem problem -> {
-                        return problem;
-                      }
-                      case ProblemSupport problemSupport -> {
-                        if (Objects.nonNull(problemSupport.getProblem())) {
-                          return problemSupport.getProblem();
-                        } else {
-                          String errorKey = problemSupport.getErrorKey();
-                          String detailCode = ProblemConstant.DETAIL_CODE_PREFIX + errorKey;
+                    if (ex instanceof Problem problem) {
+                      return problem;
+                    } else if (ex instanceof ProblemSupport problemSupport) {
+                      if (Objects.nonNull(problemSupport.getProblem())) {
+                        return problemSupport.getProblem();
+                      } else {
+                        String errorKey = problemSupport.getErrorKey();
+                        String detailCode = ProblemConstant.DETAIL_CODE_PREFIX + errorKey;
 
-                          return toProblem(
-                              (Throwable) ex,
-                              problemSupport.getStatus(),
-                              errorKey,
-                              Optional.ofNullable(problemSupport.getDefaultDetail())
-                                  .orElse(detailCode),
-                              problemSupport.getDetailArgs(),
-                              Optional.ofNullable(problemSupport.getParameters())
-                                  .orElse(Collections.emptyMap()));
-                        }
-                      }
-                      case Throwable throwable -> {
                         return toProblem(
-                            throwable,
-                            GeneralErrorKey.INTERNAL_SERVER_ERROR,
-                            HttpStatus.INTERNAL_SERVER_ERROR);
+                            (Throwable) ex,
+                            problemSupport.getStatus(),
+                            errorKey,
+                            Optional.ofNullable(problemSupport.getDefaultDetail())
+                                .orElse(detailCode),
+                            problemSupport.getDetailArgs(),
+                            Optional.ofNullable(problemSupport.getParameters())
+                                .orElse(Collections.emptyMap()));
                       }
-                      case null, default ->
-                          throw new IllegalStateException(
-                              "MultiProblem contain illegal instance: " + ex);
+                    } else if (ex instanceof Throwable throwable) {
+                      return toProblem(
+                          throwable,
+                          GeneralErrorKey.INTERNAL_SERVER_ERROR,
+                          HttpStatus.INTERNAL_SERVER_ERROR);
+                    } else {
+                      throw new IllegalStateException(
+                          "MultiProblem contain illegal instance: " + ex);
                     }
                   })
               .toList());