added in diclarative way

Jenkinsfile

@@ -0,0 +1,37 @@
+pipeline {
+   agent any
+   options {
+     timeout(time: 30, unit: 'MINUTES')
+   }
+   triggers {
+     pollSCM(* * * * *)
+   }
+   tools {
+    jdk 'JDK_17'
+   }
+   stages {
+    stage('vcs') {
+      steps {
+        git url: 'https://github.com/shaifalikhan5/spring-petclinic.git',
+         branch: 'develop'
+
+      }
+    }
+    stage('build and packaging') {
+         steps {
+            sh script: 'mvn package'
+        
+      }
+
+    }
+    stage('reporting') {
+         steps {
+            archiveArtifacts artifacts : '**/target/sprigpetclinic-*.jar'
+            junit testResults : '**/surefire-reports/**.xml'
+        
+      }
+
+    }
+   }
+
+}