diff --git a/src/main/java/com/aa.java b/src/main/java/com/aa.java
index bdf6864..0a0c964 100644
--- a/src/main/java/com/aa.java
+++ b/src/main/java/com/aa.java
@@ -2,6 +2,8 @@ package com;
 
 
 import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
 
 /**
  * @description:
@@ -24,5 +26,29 @@ public class aa {
         System.out.println("在来一次分支提交develop代码");
 
 
+        ArrayList<String> list = new ArrayList<>();
+        list.add("1");
+        list.add("2");
+        list.add("3");
+        list.add("4");
+        list.add("5");
+        list.add("6");
+        list.add("7");
+        list.add("8");
+        list.add("9");
+        list.add("10");
+
+        do {
+            Iterator<String> iterator = list.iterator();
+            while (iterator.hasNext()) {
+                String next = iterator.next();
+                System.out.println("next为-->"+next);
+                HashMap<String, String> map = new HashMap<>();
+                map.put(next, next);
+                System.out.println("map的K为-->"+map.keySet()+"v为"+map.values());
+                iterator.remove();
+            }
+
+        }while (!list.isEmpty());
     }
 }