diff --git a/backend/routes/system.go b/backend/routes/system.go
index 8c443d2a..a63febb8 100644
--- a/backend/routes/system.go
+++ b/backend/routes/system.go
@@ -302,6 +302,20 @@ func InstallLang(c *gin.Context) {
 				return
 			}
 		}
+	} else if reqBody.Lang == constants.Java {
+		if services.IsMasterNode(nodeId) {
+			_, err := services.InstallJavaLocalLang()
+			if err != nil {
+				HandleError(http.StatusInternalServerError, c, err)
+				return
+			}
+		} else {
+			_, err := services.InstallJavaRemoteLang(nodeId)
+			if err != nil {
+				HandleError(http.StatusInternalServerError, c, err)
+				return
+			}
+		}
 	} else {
 		HandleErrorF(http.StatusBadRequest, c, fmt.Sprintf("%s is not implemented", reqBody.Lang))
 		return
diff --git a/backend/services/rpc.go b/backend/services/rpc.go
index 3afaf7cb..6d733e66 100644
--- a/backend/services/rpc.go
+++ b/backend/services/rpc.go
@@ -54,6 +54,8 @@ func RpcClientInstallLang(nodeId string, lang string) (output string, err error)
 func RpcServerGetLang(msg RpcMessage) RpcMessage {
 	langName := GetRpcParam("lang", msg.Params)
 	lang := GetLangFromLangNamePlain(langName)
+	l := GetLangLocal(lang)
+	lang.InstallStatus = l.InstallStatus
 
 	// 序列化
 	resultStr, _ := json.Marshal(lang)
diff --git a/backend/services/system.go b/backend/services/system.go
index dff4d029..d2eced84 100644
--- a/backend/services/system.go
+++ b/backend/services/system.go
@@ -139,7 +139,7 @@ func GetLangInstallStatus(nodeId string, lang entity.Lang) (string, error) {
 	}
 }
 
-func GetLangLocal(lang entity.Lang) entity.Lang{
+func GetLangLocal(lang entity.Lang) entity.Lang {
 	// 检查是否存在执行路径
 	for _, p := range lang.ExecutablePaths {
 		if utils.Exists(p) {
@@ -198,6 +198,8 @@ func IsInstalledDep(installedDepList []entity.Dependency, dep entity.Dependency)
 	return false
 }
 
+// ========Python========
+
 // 初始化函数
 func InitDepsFetcher() error {
 	c := cron.New(cron.WithSeconds())
@@ -212,10 +214,6 @@ func InitDepsFetcher() error {
 	return nil
 }
 
-// =========
-// Python
-// =========
-
 type PythonDepJsonData struct {
 	Info PythonDepJsonDataInfo `json:"info"`
 }
@@ -523,10 +521,11 @@ func UninstallPythonRemoteDep(nodeId string, depName string) (string, error) {
 	return output, nil
 }
 
-// ==============
-// Node.js
-// ==============
+// ========./Python========
 
+// ========Node.js========
+
+// 本地安装Node.js
 func InstallNodejsLocalLang() (string, error) {
 	cmd := exec.Command("/bin/sh", path.Join("scripts", "install-nodejs.sh"))
 	output, err := cmd.Output()
@@ -541,7 +540,7 @@ func InstallNodejsLocalLang() (string, error) {
 	return string(output), nil
 }
 
-// 获取Node.js远端依赖列表
+// 远端安装Node.js
 func InstallNodejsRemoteLang(nodeId string) (string, error) {
 	output, err := RpcClientInstallLang(nodeId, constants.Nodejs)
 	if err != nil {
@@ -671,3 +670,33 @@ func GetNodejsDepList(nodeId string, searchDepName string) (depList []entity.Dep
 
 	return depList, nil
 }
+
+// ========./Node.js========
+
+// ========Java========
+
+// 本地安装Java
+func InstallJavaLocalLang() (string, error) {
+	cmd := exec.Command("/bin/sh", path.Join("scripts", "install-java.sh"))
+	output, err := cmd.Output()
+	if err != nil {
+		log.Error(err.Error())
+		debug.PrintStack()
+		return string(output), err
+	}
+
+	// TODO: check if Java is installed successfully
+
+	return string(output), nil
+}
+
+// 远端安装Java
+func InstallJavaRemoteLang(nodeId string) (string, error) {
+	output, err := RpcClientInstallLang(nodeId, constants.Java)
+	if err != nil {
+		return output, err
+	}
+	return output, nil
+}
+
+// ========./Java========
diff --git a/frontend/src/components/Node/NodeInstallationMatrix.vue b/frontend/src/components/Node/NodeInstallationMatrix.vue
index 0d3f1080..d1c0f195 100644
--- a/frontend/src/components/Node/NodeInstallationMatrix.vue
+++ b/frontend/src/components/Node/NodeInstallationMatrix.vue
@@ -150,9 +150,11 @@ export default {
       }, 1000)
     },
     async onInstallAll (langName) {
-      this.nodeList.map(async n => {
-        return this.onInstall(n._id, langName)
-      })
+      this.nodeList
+        .filter(n => n.status === 'online')
+        .forEach(n => {
+          this.onInstall(n._id, langName)
+        })
       setTimeout(() => {
         this.getData()
       }, 1000)