Upgrade to Java 17 and Spring Boot 3.5.16

.gitignore

@@ -1 +1,5 @@
-/.idea/
+/.idea/
+*.iml
+target/
+build/
+.gradle/

.mvn/wrapper/maven-wrapper.properties

@@ -1 +1 @@
-distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.3.9/apache-maven-3.3.9-bin.zip
+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.9.16/apache-maven-3.9.16-bin.zip

build.gradle

@@ -3,7 +3,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath("org.springframework.boot:spring-boot-gradle-plugin:2.0.2.RELEASE")
+        classpath("org.springframework.boot:spring-boot-gradle-plugin:3.5.16")
     }
 }
 
@@ -14,19 +14,24 @@ apply plugin: 'org.springframework.boot'
 apply plugin: 'io.spring.dependency-management'
 
 bootJar {
-    baseName = 'gs-spring-boot'
-    version =  '0.1.0'
+    archiveBaseName = 'gs-spring-boot'
+    archiveVersion =  '0.1.0'
 }
 
 repositories {
     mavenCentral()
 }
 
-sourceCompatibility = 1.8
-targetCompatibility = 1.8
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(17)
+    }
+}
 
 dependencies {
-    compile("org.springframework.boot:spring-boot-starter-web")
-    testCompile("junit:junit")
+    implementation("org.springframework.boot:spring-boot-starter-web")
+    implementation("org.springframework.boot:spring-boot-starter-jdbc")
+    runtimeOnly("com.h2database:h2")
+    runtimeOnly("org.springframework.boot:spring-boot-properties-migrator")
+    testImplementation("org.springframework.boot:spring-boot-starter-test")
 }
-

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,7 @@
-#Thu Mar 01 09:01:15 CST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.5-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-bin.zip