From 7287c18da70918fa4da2a8261c510412f948fd13 Mon Sep 17 00:00:00 2001
From: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Date: Wed, 7 Jan 2026 09:18:03 +0000
Subject: [PATCH] Migrate from Java 17 to Java 21

- Update java.version property from 17 to 21 in pom.xml
- Update maven-compiler-plugin source/target from 1.8 to 21
- Update Dockerfile builder stage from openjdk-17 to openjdk-21
- Update Dockerfile runtime stage from openjdk:17-alpine to openjdk:21-alpine
- Update README.md Jenkins installation from openjdk-17-jre to openjdk-21-jre

Co-Authored-By: Joao Esteves <joao.esteves@cognition.ai>
---
 Dockerfile | 4 ++--
 README.md  | 2 +-
 pom.xml    | 6 +++---
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 079acabe..ae2d6cd3 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:3.8.3-openjdk-21 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 openjdk:21-alpine as deployer
 
 # Copy build from stage 1 (builder)
 COPY --from=builder /src/target/*.jar /src/target/bankapp.jar
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..b0a311b4 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>
@@ -80,8 +80,8 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.8.0</version>
 				<configuration>
-    					<source>1.8</source>
-    					<target>1.8</target>
+	    					<source>21</source>
+	    					<target>21</target>
 				</configuration>
 			</plugin>
 		</plugins>