From 00aee989ecf27b946f6a17beb33680a5376c78fe Mon Sep 17 00:00:00 2001
From: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Date: Mon, 29 Jun 2026 11:25:41 +0000
Subject: [PATCH] build: migrate from Java 17 to Java 21

Co-Authored-By: Joao Esteves <joao.esteves@cognition.ai>
---
 Dockerfile    |  4 ++--
 README-K8S.md |  2 +-
 README.md     |  2 +-
 pom.xml       | 11 +----------
 4 files changed, 5 insertions(+), 14 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 079acabe..c80b0326 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@
 #----------------------------------
 
 # Import docker image with maven installed
-FROM maven:3.8.3-openjdk-17 as builder 
+FROM maven:3.9-eclipse-temurin-21-alpine as builder
 
 # Add maintainer, so that new user will understand who had written this Dockerfile
 MAINTAINER Madhup Pandey<madhuppandey2908@gmail.com>
@@ -25,7 +25,7 @@ RUN mvn clean install -DskipTests=true
 #--------------------------------------
 
 # Import small size java image
-FROM openjdk:17-alpine as deployer
+FROM eclipse-temurin:21-jre-alpine as deployer
 
 # Copy build from stage 1 (builder)
 COPY --from=builder /src/target/*.jar /src/target/bankapp.jar
diff --git a/README-K8S.md b/README-K8S.md
index 7554262f..2ca24ba9 100644
--- a/README-K8S.md
+++ b/README-K8S.md
@@ -85,7 +85,7 @@ sudo su
 - <b>Install Jenkins</b>
 ```bash
 sudo apt update -y
-sudo apt install fontconfig openjdk-17-jre -y
+sudo apt install fontconfig openjdk-21-jre -y
 
 sudo wget -O /usr/share/keyrings/jenkins-keyring.asc \
   https://pkg.jenkins.io/debian-stable/jenkins.io-2023.key
diff --git a/README.md b/README.md
index 2f49958e..c76964d5 100644
--- a/README.md
+++ b/README.md
@@ -89,7 +89,7 @@ sudo su
 - <b>Install Jenkins</b>
 ```bash
 sudo apt update -y
-sudo apt install fontconfig openjdk-17-jre -y
+sudo apt install fontconfig openjdk-21-jre -y
 
 sudo wget -O /usr/share/keyrings/jenkins-keyring.asc \
   https://pkg.jenkins.io/debian-stable/jenkins.io-2023.key
diff --git a/pom.xml b/pom.xml
index fc5bfeac..7e70f608 100644
--- a/pom.xml
+++ b/pom.xml
@@ -27,7 +27,7 @@
 		<url/>
 	</scm>
 	<properties>
-		<java.version>17</java.version>
+		<java.version>21</java.version>
 	</properties>
 	<dependencies>
 		<dependency>
@@ -75,15 +75,6 @@
 				<groupId>org.springframework.boot</groupId>
 				<artifactId>spring-boot-maven-plugin</artifactId>
 			</plugin>
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-compiler-plugin</artifactId>
-				<version>3.8.0</version>
-				<configuration>
-    					<source>1.8</source>
-    					<target>1.8</target>
-				</configuration>
-			</plugin>
 		</plugins>
 	</build>