diff --git a/.gitignore b/.gitignore
index b0d8a7d..94fcc86 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
 *~
 /.idea
-.*
\ No newline at end of file
+.*
+*.iml
+target/
diff --git a/java/java-freq.java b/java/java-freq.java
deleted file mode 100644
index 4e491fb..0000000
--- a/java/java-freq.java
+++ /dev/null
@@ -1,78 +0,0 @@
-
-public static void main(String[] args){
-    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
-    //return "redirect:/index.html?c=scene&key=hot";
-    for (Map.Entry<String, EleDataAtom> entry : eleDataAtomMap.entrySet()) {
-    }
-    String[] strings = os.trim().split("\\s+");
-
-    Calendar cal = Calendar.getInstance();
-    // Specific Day 2017.3.16 00:00:00
-    cal.set(2017, Calendar.MARCH, 16, 0, 0, 0);
-    Date date = cal.getTime();
-
-    // url decode using java
-    String result = java.net.URLDecoder.decode(url, "UTF-8");// java ArrayList swap elements
-    Collections.swap(List<?> list, int i, int j);
-
-    try {
-        //方法一:采用IOUtils
-        InputStream inputStream = request.getInputStream();
-        String rs = IOUtils.toString(inputStream);
-
-        // 方法二:分段读
-        final int bufferSize = 1024;
-        final char[] buffer = new char[bufferSize];
-        final StringBuilder out = new StringBuilder();
-        Reader in = new InputStreamReader(inputStream, "UTF-8");
-        for (; ; ) {
-            int rsz = in.read(buffer, 0, buffer.length);
-            if (rsz < 0)
-                break;
-            out.append(buffer, 0, rsz);
-        }
-
-        JSONArray jsonArray = JSONArray.parseArray(out.toString());
-    } catch (IOException e) {
-        APISysLog.warn("", e);
-    }
-
-    // java 7 随机int区间
-    int randomNum = ThreadLocalRandom.current().nextInt(min, max + 1);
-}
-
-
-/**
- * 判断是否完成了所有审核！！
- * 判断当前用户执行审核通过之后（当前用户能提交，则肯定是具有相应审核权限的），审核工作是否已经完成
- * 完成的条件应该是: recordDTO中保存的reviewType + 当前用户审核的 reviewType = 当前运营位所需要的所有reviewType
- * @return
- * @param attribute  运营位的审核属性
- * @param reviewResultVo  当前用户的审核信息
- * @param recordDTO   数据库中已经拥有的审核信息
- * @return
- */
-private boolean isFinishReview(SceneAttribute attribute,ReviewResultVo reviewResultVo,RecordDTO recordDTO) {
-    List<Integer> allReviewType = new ArrayList<Integer>();
-    if (attribute.isHasVisionReview()) {
-        allReviewType.add(RecordReviewEnum.VISION.getValue());
-    }
-
-    if (attribute.isHasContentReview()) {
-        allReviewType.add(RecordReviewEnum.CONTENT.getValue());
-    }
-
-    List<Integer> hasReviewType = new ArrayList<Integer>();
-    if (StringUtils.isNotBlank(recordDTO.getViewInfo())) {
-        RecordViewInfo recordViewInfo = JSONObject.parseObject(recordDTO.getViewInfo(), RecordViewInfo.class);
-        for (ReviewEvent reviewEvent : recordViewInfo.getEvents()) {
-            hasReviewType.add(reviewEvent.getReviewType());
-        }
-    }
-
-    for (Integer reviewType : reviewResultVo.getReviewList()) {
-        hasReviewType.add(reviewType);
-    }
-
-    return allReviewType.size() == hasReviewType.size();
-}
diff --git a/pom.xml b/pom.xml
new file mode 100644
index 0000000..af5c27f
--- /dev/null
+++ b/pom.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.github.aborn</groupId>
+    <artifactId>CodeSnippet</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
+    </properties>
+    
+</project>
\ No newline at end of file
diff --git a/src/main/java/com/github/aborn/tools/StringTools.java b/src/main/java/com/github/aborn/tools/StringTools.java
new file mode 100644
index 0000000..639d8a4
--- /dev/null
+++ b/src/main/java/com/github/aborn/tools/StringTools.java
@@ -0,0 +1,29 @@
+package com.github.aborn.tools;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @author aborn
+ * @date 2021/06/30 10:56 AM
+ */
+public class StringTools {
+
+    public static void main(String[] args) {
+        String inputValue = "zhangsan <zhangsan@qq.com>; lisi <lisi@hotmail.com>; ";
+
+        String[] arr = inputValue.split(";");
+        List<String> resultList = new ArrayList<>();
+
+        for (String item : arr) {
+            if (item.contains("<")) {
+                String[] arrItem = item.split("<");
+                if (arrItem.length > 0 && !resultList.contains(arrItem[0].trim())) {
+                    resultList.add(arrItem[0].trim());
+                }
+            }
+        }
+
+        System.out.println(String.join(";", resultList));
+    }
+}
diff --git a/src/main/java/com/github/aborn/utils/NumberUtils.java b/src/main/java/com/github/aborn/utils/NumberUtils.java
new file mode 100644
index 0000000..014f2e5
--- /dev/null
+++ b/src/main/java/com/github/aborn/utils/NumberUtils.java
@@ -0,0 +1,8 @@
+package com.github.aborn.utils;
+
+/**
+ * @author aborn
+ * @date 2021/06/30 11:23 AM
+ */
+public class NumberUtils {
+}