upgrade java project to spring boot 4.0

.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.properties

@@ -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/gradlew

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 #
-# Copyright © 2015-2021 the original authors.
+# Copyright © 2015 the original authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -15,6 +15,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 
 ##############################################################################
 #
@@ -55,7 +57,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
@@ -84,7 +86,7 @@ done
 # shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
 # Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
-APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
@@ -112,7 +114,6 @@ case "$( uname )" in                #(
   NONSTOP* )        nonstop=true ;;
 esac
 
-CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 
 # Determine the Java command to use to start the JVM.
@@ -170,7 +171,6 @@ fi
 # For Cygwin or MSYS, switch paths to Windows format before running java
 if "$cygwin" || "$msys" ; then
     APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
-    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
 
     JAVACMD=$( cygpath --unix "$JAVACMD" )
 
@@ -203,15 +203,14 @@ fi
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 # Collect all arguments for the java command:
-#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
 #     and any embedded shellness will be escaped.
 #   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
 #     treated as '${Hostname}' itself on the command line.
 
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \
-        -classpath "$CLASSPATH" \
-        org.gradle.wrapper.GradleWrapperMain \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
         "$@"
 
 # Stop when "xargs" is not available.

java/gradlew.bat

@@ -0,0 +1,93 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

java/src/main/java/com/sourceallies/interview/Solution.java

@@ -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!";
     }

java/src/main/resources/application.yaml

@@ -2,8 +2,8 @@ spring:
   autoconfigure:
     exclude:
       # Remove these exclusions if you'd like to use JPA for database functionality
-      - org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration
-      - org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration
+      - org.springframework.boot.hibernate.autoconfigure.HibernateJpaAutoConfiguration
+      - org.springframework.boot.jdbc.autoconfigure.DataSourceAutoConfiguration
   datasource:
   # Configured to point to the docker-compose postgres DB container by default
     username: postgres