feat!: upgrade Java 8 to Java 21 and Spring Boot 2.x to 3.x

pom.xml

@@ -10,10 +10,15 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.0.5.RELEASE</version>
+        <version>3.2.12</version>
     </parent>
     <dependencyManagement>
         <dependencies>
+            <dependency>
+                <groupId>jakarta.validation</groupId>
+                <artifactId>jakarta.validation-api</artifactId>
+                <version>3.1.1</version>
+            </dependency>
             <dependency>
                 <groupId>software.amazon.awssdk</groupId>
                 <artifactId>bom</artifactId>
@@ -43,7 +48,7 @@
         <dependency>
             <groupId>org.json</groupId>
             <artifactId>json</artifactId>
-            <version>20200518</version>
+            <version>20240303</version>
         </dependency>
         <dependency>
         <groupId>org.springframework.boot</groupId>
@@ -54,38 +59,29 @@
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-api</artifactId>
-            <version>2.13.3</version>
-        </dependency>
-        <!-- https://mvnrepository.com/artifact/junit/junit -->
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>4.13.1</version>
-            <scope>test</scope>
+            <version>2.23.1</version>
         </dependency>
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
-            <version>2.13.3</version>
+            <version>2.23.1</version>
         </dependency>
         <dependency>
             <groupId>org.mockito</groupId>
-            <artifactId>mockito-all</artifactId>
-            <version>1.10.19</version>
+            <artifactId>mockito-core</artifactId>
             <scope>test</scope>
         </dependency>
         <!-- https://mvnrepository.com/artifact/javax.persistence/javax.persistence-api -->
         <!-- https://mvnrepository.com/artifact/javax.validation/validation-api -->
         <dependency>
-            <groupId>javax.validation</groupId>
-            <artifactId>validation-api</artifactId>
-            <version>2.0.1.Final</version>
+            <groupId>jakarta.validation</groupId>
+            <artifactId>jakarta.validation-api</artifactId>
         </dependency>
 
     </dependencies>
 
     <properties>
-        <java.version>1.8</java.version>
+        <java.version>21</java.version>
     </properties>
 
     <build>
@@ -97,10 +93,9 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.8.1</version>
+                <version>3.14.0</version>
                 <configuration>
-                    <source>${java.version}</source>
-                    <target>${java.version}</target>
+                    <release>${java.version}</release>
                 </configuration>
             </plugin>
         </plugins>

src/main/java/com/amazonaws/samples/appconfig/movies/MoviesController.java

@@ -19,15 +19,13 @@
 import org.springframework.validation.BindingResult;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RestController;
 import software.amazon.awssdk.services.appconfig.AppConfigClient;
 import software.amazon.awssdk.services.appconfig.model.GetConfigurationResponse;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
-import javax.validation.Valid;
-
-import static org.springframework.web.bind.annotation.RequestMethod.POST;
+import jakarta.validation.Valid;
 
 @RestController
 public class MoviesController {
@@ -109,8 +107,8 @@ public String movie() {
         }
     }
 
-    @RequestMapping(value = "/movies/{movie}/edit", method = POST)
-    public String processUpdateMovie(@Valid Movie movie, BindingResult result, @PathVariable("movieId") int movieId) {
+    @PostMapping("/movies/{movie}/edit")
+    public String processUpdateMovie(@Valid Movie movie, BindingResult result, @PathVariable int movieId) {
         if (!MovieUtils.isValidMovieName(movie.getMovieName())) {
             result.rejectValue("name", "error.name", "Invalid movie name");
             return "editMovieForm";

src/main/java/com/amazonaws/samples/appconfig/utils/Math.java

@@ -1,27 +1,28 @@
 //example from https://docs.openrewrite.org/running-recipes/popular-recipe-guides/migrate-to-java-17
 package com.amazonaws.samples.appconfig.utils;
 import java.math.BigDecimal;
+import java.math.RoundingMode;
 
 public class Math {
-    Boolean bool = new Boolean(true);
-    Byte b = new Byte("1");
-    Character c = new Character('c');
-    Double d = new Double(1.0);
-    Float f = new Float(1.1f);
-    Long l = new Long(1);
-    Short sh = new Short("12");
+    Boolean bool = Boolean.valueOf(true);
+    Byte b = Byte.valueOf("1");
+    Character c = Character.valueOf('c');
+    Double d = Double.valueOf(1.0);
+    Float f = Float.valueOf(1.1f);
+    Long l = Long.valueOf(1);
+    Short sh = Short.valueOf("12");
     short s3 = 3;
-    Short sh3 = new Short(s3);
-    Integer i = new Integer(1);
+    Short sh3 = Short.valueOf(s3);
+    Integer i = Integer.valueOf(1);
 
     public void divide() {
         BigDecimal bd = BigDecimal.valueOf(10);
         BigDecimal bd2 = BigDecimal.valueOf(2);
-        bd.divide(bd2, BigDecimal.ROUND_DOWN);
-        bd.divide(bd2, 1);
-        bd.divide(bd2, 1, BigDecimal.ROUND_CEILING);
-        bd.divide(bd2, 1, 1);
-        bd.setScale(2, 1);
+        bd.divide(bd2, RoundingMode.DOWN);
+        bd.divide(bd2, RoundingMode.DOWN);
+        bd.divide(bd2, 1, RoundingMode.CEILING);
+        bd.divide(bd2, 1, RoundingMode.DOWN);
+        bd.setScale(2, RoundingMode.DOWN);
     }
 
    }

src/test/java/com/amazonaws/samples/appconfig/movies/MathTest.java

@@ -1,11 +1,13 @@
 package com.amazonaws.samples.appconfig.movies;
 
-import org.junit.Test;
-
 import java.math.BigDecimal;
+import java.math.RoundingMode;
+
 import com.amazonaws.samples.appconfig.utils.Math;
 
-import static org.junit.Assert.assertEquals;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
 public class MathTest {
 
@@ -18,21 +20,21 @@ public void testDivide() {
         BigDecimal bd = BigDecimal.valueOf(10);
         BigDecimal bd2 = BigDecimal.valueOf(2);
         BigDecimal expectedResult1 = BigDecimal.valueOf(5);
-        assertEquals(expectedResult1, bd.divide(bd2, BigDecimal.ROUND_DOWN));
+        assertEquals(expectedResult1, bd.divide(bd2, RoundingMode.DOWN));
 
         // Test divide(BigDecimal, int)
         BigDecimal expectedResult2 = BigDecimal.valueOf(5.0);
 
         // Test divide(BigDecimal, int, int)
         BigDecimal expectedResult3 = BigDecimal.valueOf(5.0);
-        assertEquals(expectedResult3, bd.divide(bd2, 1, BigDecimal.ROUND_CEILING));
+        assertEquals(expectedResult3, bd.divide(bd2, 1, RoundingMode.CEILING));
 
         BigDecimal expectedResult4 = BigDecimal.valueOf(5.0);
-        assertEquals(expectedResult4, bd.divide(bd2, 1, 1));
+        assertEquals(expectedResult4, bd.divide(bd2, 1, RoundingMode.DOWN));
 
         // Test setScale(int, int)
         BigDecimal expectedResult5 = BigDecimal.valueOf(10);
-        bd.setScale(2, 1);
+        bd.setScale(2, RoundingMode.DOWN);
         assertEquals(expectedResult5, bd);
     }
 }

summary/buildCommandOutput.log

@@ -0,0 +1,56 @@
+[INFO] Scanning for projects...
+[INFO] 
+[INFO] ----------------< org.amazonaws.samples:movie-service >-----------------
+[INFO] Building movie-service 0.1.0
+[INFO] --------------------------------[ jar ]---------------------------------
+[INFO] 
+[INFO] --- maven-clean-plugin:3.3.2:clean (default-clean) @ movie-service ---
+[INFO] 
+[INFO] --- maven-resources-plugin:3.3.1:resources (default-resources) @ movie-service ---
+[INFO] Copying 1 resource from src/main/resources to target/classes
+[INFO] Copying 1 resource from src/main/resources to target/classes
+[INFO] 
+[INFO] --- maven-compiler-plugin:3.14.0:compile (default-compile) @ movie-service ---
+[INFO] Recompiling the module because of changed source code.
+[INFO] Compiling 9 source files with javac [debug parameters release 21] to target/classes
+[INFO] Annotation processing is enabled because one or more processors were found
+  on the class path. A future release of javac may disable annotation processing
+  unless at least one processor is specified by name (-processor), or a search
+  path is specified (--processor-path, --processor-module-path), or annotation
+  processing is enabled explicitly (-proc:only, -proc:full).
+  Use -Xlint:-options to suppress this message.
+  Use -proc:none to disable annotation processing.
+[INFO] 
+[INFO] --- maven-resources-plugin:3.3.1:testResources (default-testResources) @ movie-service ---
+[INFO] skip non existing resourceDirectory /tmp/originalCopy_53ab3758-8530-47a8-920e-ecc32b663ebf_588a0b62-85c5-4058-86a9-3407babc676a/sources/src/test/resources
+[INFO] 
+[INFO] --- maven-compiler-plugin:3.14.0:testCompile (default-testCompile) @ movie-service ---
+[INFO] Recompiling the module because of changed dependency.
+[INFO] Compiling 1 source file with javac [debug parameters release 21] to target/test-classes
+[INFO] Annotation processing is enabled because one or more processors were found
+  on the class path. A future release of javac may disable annotation processing
+  unless at least one processor is specified by name (-processor), or a search
+  path is specified (--processor-path, --processor-module-path), or annotation
+  processing is enabled explicitly (-proc:only, -proc:full).
+  Use -Xlint:-options to suppress this message.
+  Use -proc:none to disable annotation processing.
+[INFO] 
+[INFO] --- maven-surefire-plugin:3.1.2:test (default-test) @ movie-service ---
+[INFO] Using auto detected provider org.apache.maven.surefire.junitplatform.JUnitPlatformProvider
+[INFO] 
+[INFO] -------------------------------------------------------
+[INFO]  T E S T S
+[INFO] -------------------------------------------------------
+[INFO] Running com.amazonaws.samples.appconfig.movies.MathTest
+[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.063 s -- in com.amazonaws.samples.appconfig.movies.MathTest
+[INFO] 
+[INFO] Results:
+[INFO] 
+[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
+[INFO] 
+[INFO] ------------------------------------------------------------------------
+[INFO] BUILD SUCCESS
+[INFO] ------------------------------------------------------------------------
+[INFO] Total time:  3.136 s
+[INFO] Finished at: 2025-09-18T12:51:12Z
+[INFO] ------------------------------------------------------------------------