makeup structure

data/1.Java初阶/1.Java概览/2.编译Java程序/app.json

+{
+  "type": "code_options",
+  "author": "ccat",
+  "source": "app.md",
+  "notebook_enable": false
+}
\ No newline at end of file

data/1.Java初阶/1.Java概览/2.编译Java程序/config.json

 {
   "node_id": "java-3c458ea864a540468e0b10cd82df0662",
-  "keywords": [],
+  "keywords": ["hello world", "app"],
   "children": [],
-  "export": [],
+  "export": ["app.json"],
   "title": "编译Java程序"
 }
\ No newline at end of file

data/1.Java初阶/1.Java概览/3.Java的运行机制/config.json

 {
   "node_id": "java-2af8b309ed874ad6bd06c6f2363d098d",
-  "keywords": [],
+  "keywords": ["runtime", "运行机制"],
   "children": [],
   "export": [
     "runtime.json"

data/1.Java初阶/1.Java概览/4.根据CLASSPATH环境变量定位类/config.json

 {
   "node_id": "java-4ddfc05dbbe54300905f404c1ed1b4f9",
-  "keywords": [],
+  "keywords": ["classpath"],
   "children": [],
   "export": [
     "classpath.json"

data/1.Java初阶/2.Java的基本语法/3.Java中的关键字/config.json

 {
   "node_id": "java-e16c7862e7cc4feeb54cf6a42dd65cef",
   "keywords": [
-    "关键字"
+    "关键字", "keyword"
   ],
   "children": [],
   "export": [