added a space in commented line for agent.

Jenkinsfile

@@ -3,14 +3,14 @@
 pipeline{
 
     agent any
-    //agent { label 'Demo' }
+    //agent { label 'Demo' } 
 
     parameters{
 
         choice(name: 'action', choices: 'create\ndelete', description: 'Choose create/Destroy')
         string(name: 'ImageName', description: "name of the docker build", defaultValue: 'javapp')
         string(name: 'ImageTag', description: "tag of the docker build", defaultValue: 'v1')
-        string(name: 'DockerHubUser', description: "name of the Application", defaultValue: 'praveensingam1994')
+        string(name: 'DockerHubUser', description: "name of the Application", defaultValue: 'rupamn11')
     }
 
     stages{
@@ -20,7 +20,7 @@ pipeline{
             steps{
             gitCheckout(
                 branch: "main",
-                url: "https://github.com/praveen1994dec/Java_app_3.0.git"
+                url: "https://github.com/rupamn11/Java_app_3.0.git"
             )
             }
         }

Jenkinsfileman

@@ -0,0 +1,135 @@
+@Library('my-shared-library') _
+
+pipeline{
+
+    agent any
+    //agent { label 'Demo' }
+
+    parameters{
+
+        choice(name: 'action', choices: 'create\ndelete', description: 'Choose create/Destroy')
+        string(name: 'ImageName', description: "name of the docker build", defaultValue: 'javapp')
+        string(name: 'ImageTag', description: "tag of the docker build", defaultValue: 'v1')
+        string(name: 'DockerHubUser', description: "name of the Application", defaultValue: 'rupamn11')
+    }
+
+    stages{
+
+        stage('Git Checkout'){
+                    when { expression {  params.action == 'create' } }
+            steps{
+            gitCheckout(
+                branch: "main",
+                url: "https://github.com/rupamn11/Java_app_3.0.git"
+            )
+            }
+        }
+         stage('Unit Test maven'){
+
+         when { expression {  params.action == 'create' } }
+
+            steps{
+               script{
+
+                   mvnTest()
+               }
+            }
+        }
+         stage('Integration Test maven'){
+         when { expression {  params.action == 'create' } }
+            steps{
+               script{
+
+                   mvnIntegrationTest()
+               }
+            }
+        }
+        stage('Static code analysis: Sonarqube'){
+         when { expression {  params.action == 'create' } }
+            steps{
+               script{
+
+                   def SonarQubecredentialsId = 'sonarqube-api'
+                   statiCodeAnalysis(SonarQubecredentialsId)
+               }
+            }
+       }
+       stage('Quality Gate Status Check : Sonarqube'){
+         when { expression {  params.action == 'create' } }
+            steps{
+               script{
+
+                   def SonarQubecredentialsId = 'sonarqube-api'
+                   QualityGateStatus(SonarQubecredentialsId)
+               }
+            }
+       }
+        stage('Maven Build : maven'){
+         when { expression {  params.action == 'create' } }
+            steps{
+               script{
+
+                   mvnBuild()
+               }
+            }
+        }
+        stage('Docker Image Build'){
+         when { expression {  params.action == 'create' } }
+            steps{
+               script{
+
+                   dockerBuild("${params.ImageName}","${params.ImageTag}","${params.DockerHubUser}")
+               }
+            }
+        }
+         stage('Docker Image Scan: trivy '){
+         when { expression {  params.action == 'create' } }
+            steps{
+               script{
+
+                   dockerImageScan("${params.ImageName}","${params.ImageTag}","${params.DockerHubUser}")
+               }
+            }
+        }
+        stage('Docker Image Push : DockerHub '){
+         when { expression {  params.action == 'create' } }
+            steps{
+               script{
+
+                   dockerImagePush("${params.ImageName}","${params.ImageTag}","${params.DockerHubUser}")
+               }
+            }
+        }   
+//        stage('Docker Image Cleanup : DockerHub '){
+  //       when { expression {  params.action == 'create' } }
+    //        steps{
+      //         script{
+      //           
+      //         dockerImageCleanup("${params.ImageName}","${params.ImageTag}","${params.DockerHubUser}")
+//             }
+//          }
+//      }
+		stage('Update K8s Manifest Repo for ArgoCD') {
+          when { expression { params.action == 'create' } }
+          steps {
+            script {
+              dir('k8s-manifests-repo') {
+                git credentialsId: 'github-creds', branch: 'main', url: 'https://github.com/rupamn11/k8s-manifests-repo.git'
+
+                sh """
+                  sed -i 's|image: ${params.DockerHubUser}/${params.ImageName}:.*|image: ${params.DockerHubUser}/${params.ImageName}:${params.ImageTag}|' deployment.yaml
+                """
+
+                sh """
+                  git config user.email "rupamnimje147@gmail.com"
+                  git config user.name "rupamn11"
+                  git add deployment.yaml
+                  git commit -m "Update image to ${params.DockerHubUser}/${params.ImageName}:${params.ImageTag}"
+                  git push origin main
+                """
+              }
+           } 
+        }
+    }
+    }
+}