diff --git a/Jenkinsfile b/Jenkinsfile
index 97a7169b..6412fa50 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -5,7 +5,7 @@ node {
     
     stage('build') {
         //withEnv(["PATH+MAVEN=${tool 'apache-maven-3.3.9'}/bin"]) {
-        withEnv(["PATH+MAVEN=${tool 'mvn-3.6.0'}/bin"]) {
+        withEnv(["PATH+MAVEN=${tool 'mvn-3.8.6'}/bin"]) {
             sh 'mvn --version'
             sh "mvn clean ${params.testType}"
         }
diff --git a/Jenkinsfile_0226 b/Jenkinsfile_0226
new file mode 100644
index 00000000..45472399
--- /dev/null
+++ b/Jenkinsfile_0226
@@ -0,0 +1,82 @@
+properties([parameters(
+    [string(defaultValue: 'test', description: 'test or verify', name: 'testType', trim: true),
+    string(defaultValue: 'openjdk8', description: 'openjdk8, openjdk9, openjdk10', name: 'jdkVer', trim: true),
+    string(defaultValue: 'master', description: 'master, or failed', name: 'branch', trim: true)
+    ]
+    
+    )])
+
+node {
+    stage("git") {
+        checkout scm
+    }
+    
+    manager.addShortText(params.jdkVer)
+    manager.addShortText(params.testType)
+    
+    stage('build') {
+        // ,
+        //        "PATH+JDK=${tool 'openjdk10'}/bin"
+        // mvn: mvn-3.3.9, mvn-3.6.0, mvn-3.6.2
+        // jdk: openjdk8, openjdk9, openjdk10
+        def jdk = tool params.jdkVer
+        withEnv(["PATH+MAVEN=${tool 'mvn-3.3.9'}/bin", 
+                "JAVA_HOME=${jdk}"]) {
+            sh 'ls -al $JAVA_HOME'
+            sh 'mvn --version'
+            sh "mvn clean ${params.testType} -Dmaven.test.failure.ignore=true"
+        }
+    }
+    
+    stage('report') {
+        junit 'target/surefire-reports/*.xml'
+        jacoco execPattern: 'target/**.exec'
+        
+        // if failed tests exist
+        if (currentBuild.result == 'UNSTABLE') {
+            
+            manager.addShortText("you have got fails.")
+            mail bcc: '', body: "<a href='https://github.com/$%7BBUILD_URL%7D'>jenkins</a>", cc: '', from: '', replyTo: '', subject: 'you have failed tests', to: '8ad5a8295e@nhnent.dooray.com', mimeType: "text/html"
+            
+            // dooray messenger
+            def messengerBody = "you have failed tests"
+            withCredentials([string(credentialsId: 'dooray_incoming_hookurl', variable: 'DOORAY_URL')]) {
+ 
+                httpRequest httpMode: 'POST', 
+                    requestBody: """{"botName": "Jenkins Pipeline Training", "botIconImage": "https://static.dooray.com/static_images/dooray-bot.png", "text":"${messengerBody}",
+                        "attachments" : [
+                            {
+                                "title" : "jenkins",
+                                "titleLink" : "${BUILD_URL}",
+                                "text" : "",
+                                "color" : "red"
+                            }
+                        ]
+                    }""", 
+                    responseHandle: 'NONE', url: "${DOORAY_URL}", contentType: 'APPLICATION_JSON'
+            }
+                    
+        }else {
+            manager.addShortText("good job")
+            
+            def messengerBody = "good job"
+            withCredentials([string(credentialsId: 'dooray_incoming_hookurl', variable: 'DOORAY_URL')]) {
+ 
+                httpRequest httpMode: 'POST', 
+                    requestBody: """{"botName": "Jenkins Pipeline Training", "botIconImage": "https://static.dooray.com/static_images/dooray-bot.png", "text":"${messengerBody}",
+                        "attachments" : [
+                            {
+                                "title" : "jenkins",
+                                "titleLink" : "${BUILD_URL}",
+                                "text" : "",
+                                "color" : "blue"
+                            }
+                        ]
+                    }""", 
+                    responseHandle: 'NONE', url: "${DOORAY_URL}", contentType: 'APPLICATION_JSON'
+            }
+        }
+    }
+    
+    
+}
diff --git a/Jenkinsfile_declarative b/Jenkinsfile_declarative
new file mode 100644
index 00000000..227596ad
--- /dev/null
+++ b/Jenkinsfile_declarative
@@ -0,0 +1,26 @@
+pipeline {
+  agent any
+  tools {
+    maven 'mvn-3.6.0'
+    jdk 'openjdk11'
+  }
+  parameters {
+    string defaultValue: 'test', name: 'testType'
+  }
+ 
+  
+  stages {
+    stage('build') {
+      steps {
+        sh "mvn clean ${params.testType}"
+      }
+    }
+  }
+  
+  post {
+    always {
+      junit 'target/surefire-reports/*.xml'
+      jacoco execPattern: 'target/**.exec'
+    }
+  }
+}
diff --git a/Jenkinsfile_caller b/Jenkinsfile_local_library
similarity index 55%
rename from Jenkinsfile_caller
rename to Jenkinsfile_local_library
index e61dc9f3..0db84053 100644
--- a/Jenkinsfile_caller
+++ b/Jenkinsfile_local_library
@@ -1,5 +1,5 @@
 node('master') {
  checkout scm
- def m = load('Jenkinsfile_module.groovy')
+ def m = load('mvn_build.groovy')
  m.mvnBuild("test") 
 }
diff --git a/Jenkinsfile_shared b/Jenkinsfile_shared
index 16e6c0ea..7b80161d 100644
--- a/Jenkinsfile_shared
+++ b/Jenkinsfile_shared
@@ -1,4 +1,5 @@
 @Library('demo')_
+// https://github.com/hyunil-shin/JenkinsPipelineTraining/blob/master/shared_library/shared/vars/mvn.groovy
 
 echo 'call library'
 mvn()
diff --git a/Jenkinsfile_module.groovy b/mvn_build.groovy
similarity index 82%
rename from Jenkinsfile_module.groovy
rename to mvn_build.groovy
index 73735d26..26b3cd28 100644
--- a/Jenkinsfile_module.groovy
+++ b/mvn_build.groovy
@@ -2,7 +2,7 @@
 
 def mvnBuild(testType) {
     stage('build') {
-        withEnv(["PATH+MAVEN=${tool 'mvn-3.6.0'}/bin"]) {
+        withEnv(["PATH+MAVEN=${tool 'mvn-3.8.6'}/bin"]) {
             sh 'mvn --version'
             sh "mvn clean ${testType}"
         }