diff --git a/alis-auu/alis-auu-starter/.gitignore b/alis-auu/alis-auu-starter/.gitignore
new file mode 100644
index 0000000..549e00a
--- /dev/null
+++ b/alis-auu/alis-auu-starter/.gitignore
@@ -0,0 +1,33 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
diff --git a/alis-auu/alis-auu-starter/pom.xml b/alis-auu/alis-auu-starter/pom.xml
new file mode 100644
index 0000000..df3e7bd
--- /dev/null
+++ b/alis-auu/alis-auu-starter/pom.xml
@@ -0,0 +1,43 @@
+<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.alis.auu</groupId>
+        <artifactId>alis-auu</artifactId>
+        <version>sugar</version>
+        <relativePath/>
+    </parent>
+
+
+    <artifactId>alis-auu-starter</artifactId>
+    <version>sugar</version>
+    <name>alis-auu-starter</name>
+    <description>spring boot starter</description>
+    <properties>
+        <java.version>11</java.version>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
diff --git a/alis-auu/alis-auu-starter/src/main/java/org/alis/auu/alisauustarter/AlisAuuStarterApplication.java b/alis-auu/alis-auu-starter/src/main/java/org/alis/auu/alisauustarter/AlisAuuStarterApplication.java
new file mode 100644
index 0000000..fdaf7c5
--- /dev/null
+++ b/alis-auu/alis-auu-starter/src/main/java/org/alis/auu/alisauustarter/AlisAuuStarterApplication.java
@@ -0,0 +1,13 @@
+package org.alis.auu.alisauustarter;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class AlisAuuStarterApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(AlisAuuStarterApplication.class, args);
+    }
+
+}
diff --git a/alis-auu/alis-auu-starter/src/main/resources/application.properties b/alis-auu/alis-auu-starter/src/main/resources/application.properties
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/alis-auu/alis-auu-starter/src/main/resources/application.properties
@@ -0,0 +1 @@
+
diff --git a/alis-auu/alis-auu-starter/src/test/java/org/alis/auu/alisauustarter/AlisAuuStarterApplicationTests.java b/alis-auu/alis-auu-starter/src/test/java/org/alis/auu/alisauustarter/AlisAuuStarterApplicationTests.java
new file mode 100644
index 0000000..230cc0f
--- /dev/null
+++ b/alis-auu/alis-auu-starter/src/test/java/org/alis/auu/alisauustarter/AlisAuuStarterApplicationTests.java
@@ -0,0 +1,13 @@
+package org.alis.auu.alisauustarter;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class AlisAuuStarterApplicationTests {
+
+    @Test
+    void contextLoads() {
+    }
+
+}
diff --git a/datastructure/src/main/java/org/alis/smallcc/algorithm/thread/SortPrintThread.java b/datastructure/src/main/java/org/alis/smallcc/algorithm/thread/SortPrintThread.java
new file mode 100644
index 0000000..da3b3b7
--- /dev/null
+++ b/datastructure/src/main/java/org/alis/smallcc/algorithm/thread/SortPrintThread.java
@@ -0,0 +1,59 @@
+package org.alis.smallcc.algorithm.thread;
+
+import java.util.concurrent.locks.Condition;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
+
+/**
+ * 顺序打印
+ */
+public class SortPrintThread {
+
+    public static void main(String[] args) {
+
+        Lock lock = new ReentrantLock();
+
+        Condition condition1 = lock.newCondition();
+        Condition condition2 = lock.newCondition();
+        char[] c1="1234567".toCharArray();
+        char[] c2="ABCDEFG".toCharArray();
+
+        new Thread(() -> {
+            lock.lock();
+            try {
+                for(char c:c1){
+                    System.out.println(c);
+                    condition2.signal();
+                    condition1.await();
+                }
+                condition2.signal();
+
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            } finally {
+                lock.unlock();
+            }
+
+
+        }).start();
+
+        new Thread(() -> {
+            lock.lock();
+            try {
+                for(char c:c2){
+                    System.out.println(c);
+                    condition1.signal();
+                    condition2.await();
+                }
+                condition1.signal();
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            } finally {
+                lock.unlock();
+            }
+
+        }).start();
+
+    }
+
+}