several changes needed for updating build

build.gradle

@@ -1,6 +1,6 @@
 plugins
 {
-	id 'org.springframework.boot' version '2.7.0' 
+	id 'org.springframework.boot' version '3.5.9' 
 	id 'io.spring.dependency-management' version '1.0.11.RELEASE'
 	id 'java'
 	id 'eclipse'
@@ -23,21 +23,19 @@ eclipse
 }
 
 
+
 repositories
 {
 	mavenCentral()
 }
 
-java
-{
-    toolchain
-    {
+java {
+    toolchain {
         languageVersion = JavaLanguageVersion.of(java_version)
-        vendor = JvmVendorSpec.IBM
-        implementation = JvmImplementation.J9
     }
 }
 
+
 dependencies
 {    
     // CICS BOM (as of May 2020)
@@ -51,15 +49,15 @@ dependencies
 
     // Don't include TomCat in the runtime build
     providedRuntime("org.springframework.boot:spring-boot-starter-tomcat")
-
-    // Java Transaction API (this is newer and covers up to jta-1.3) - don't include in the final build
-    compileOnly ("javax.transaction:javax.transaction-api")
-
+
+    // Java Transaction API - don't include in the final build
+    compileOnly 'jakarta.transaction:jakarta.transaction-api'
     // Spring's Transactional API
     implementation ("org.springframework:spring-tx")           
 }
 
-
+//Don't generate a FAT bootWar, we don't need to run standalone
+bootWar { enabled = false }
 
 publishing {
     publications {

gradle.properties

@@ -14,4 +14,4 @@
 # For example: gradle build publish.
 publish_repo_releases_url = 'default-value-for-publish_repo_releases_url'
 publish_repo_releases_name = 'default-value-for-publish_repo_releases_name'
-java_version = 8
+java_version = 17

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-rc-1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

pom.xml

@@ -7,22 +7,24 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>2.7.0</version>
+    <version>3.5.9</version>
     <relativePath/>
   </parent>
 
+
   <!--  Application properties -->
   <groupId>com.ibm.cicsdev</groupId>
   <artifactId>cics-java-liberty-springboot-transactions</artifactId>
   <version>0.1.0</version>  
   <name>com.ibm.cicsdev.springboot.transactions</name>
   <description>Demo project for Spring and Liberty transactions</description>
+
   <properties>
-    <java.version>1.8</java.version>
-
+    <java.version>17</java.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <maven.compiler.target>${java.version}</maven.compiler.target>
-    <maven.compiler.source>${java.version}</maven.compiler.source>
+    <maven.compiler.source>${java.version}</maven.compiler.source>    
+    <spring-boot.repackage.skip>true</spring-boot.repackage.skip>
   </properties>
 
   <!-- CICS BOM (as of May 2020) -->
@@ -31,7 +33,7 @@
       <dependency>
         <groupId>com.ibm.cics</groupId>
         <artifactId>com.ibm.cics.ts.bom</artifactId>
-        <version>5.5-20200519131930-PH25409</version>
+        <version>6.1-20250812133513-PH63856</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
@@ -66,8 +68,9 @@
 
     <!-- Compile against, but don't include javax.transaction API -->
     <dependency>
-      <groupId>javax.transaction</groupId>
-      <artifactId>javax.transaction-api</artifactId>
+      <groupId>jakarta.transaction</groupId>
+      <artifactId>jakarta.transaction-api</artifactId>
+      <version>1.3</version>
       <scope>provided</scope>
     </dependency>	  
 

src/main/java/com/ibm/cicsdev/springboot/transactions/JEEUserTransaction.java

@@ -12,7 +12,7 @@
 
 import javax.naming.InitialContext;
 import javax.naming.NamingException;
-import javax.transaction.UserTransaction;
+import jakarta.transaction.UserTransaction;
 import org.springframework.stereotype.Component;
 import com.ibm.cics.server.TSQ;