upgrade java project to spring boot 4.0

Author: kylehoehns

.devcontainer/java/devcontainer.json

@@ -1,6 +1,6 @@
 {
 	"name": "Java",
-	"image": "mcr.microsoft.com/devcontainers/java:21-bullseye",
+	"image": "mcr.microsoft.com/devcontainers/java:25-jdk-bookworm",
 	"containerEnv": {
 		"DISABLE_JAVA_BUILD": "true"
 	},

.gitignore

@@ -3,4 +3,5 @@ localstack/data
 .mypy_cache
 target
 .idea
-postgres-data
+postgres-data
+.DS_Store

java/README.md

@@ -1,9 +1,9 @@
 # Java Project
 
 ## Tech Stack
-- Java 21
-- JUnit 5
-- Spring Boot 3.2
+- Java 25
+- JUnit 6
+- Spring Boot 4.0
     - Web
     - JPA
     - Lombok

java/build.gradle

@@ -1,14 +1,16 @@
 plugins {
 	id 'java'
-	id 'org.springframework.boot' version '3.2.0'
-	id 'io.spring.dependency-management' version '1.1.4'
+	id 'org.springframework.boot' version '4.0.0'
+	id 'io.spring.dependency-management' version '1.1.7'
 }
 
 group = 'com.sourceallies'
 version = '0.0.1-SNAPSHOT'
 
 java {
-	sourceCompatibility = '21'
+	toolchain {
+		languageVersion = JavaLanguageVersion.of(25)
+	}
 }
 
 configurations {
@@ -23,17 +25,29 @@ repositories {
 
 dependencies {
 	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
-	implementation 'org.springframework.boot:spring-boot-starter-web'
+	implementation 'org.springframework.boot:spring-boot-starter-webmvc'
 	compileOnly 'org.projectlombok:lombok'
 	runtimeOnly 'org.postgresql:postgresql'
 	annotationProcessor 'org.springframework.boot:spring-boot-configuration-processor'
 	annotationProcessor 'org.projectlombok:lombok'
-	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	testImplementation 'org.springframework.boot:spring-boot-starter-data-jpa-test'
+	testImplementation 'org.springframework.boot:spring-boot-starter-webmvc-test'
+	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 }
 
 tasks.named('test') {
 	useJUnitPlatform()
 	testLogging {
-        exceptionFormat "full"
+		events = ["passed", "skipped", "failed"]
+		exceptionFormat = "full"
+		showExceptions = true
+		showCauses = true
+		showStackTraces = true
+	}
+	afterSuite { desc, result ->
+		if (!desc.parent) {
+			println "\nTest Results: ${result.resultType}"
+			println "Tests run: ${result.testCount}, Passed: ${result.successfulTestCount}, Failed: ${result.failedTestCount}, Skipped: ${result.skippedTestCount}"
+		}
 	}
 }

java/gradle.properties

@@ -0,0 +1 @@
+org.gradle.configuration-cache=true

java/gradle/wrapper/gradle-wrapper.jar

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.0-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

java/gradle/wrapper/gradle-wrapper.properties

@@ -1,12 +1,7 @@
 package com.sourceallies.interview;
 
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-@RestController
 public class Solution {
-    
-    @GetMapping
+
     public String getGreeting() {
         return "Hello, world!";
     }