diff --git a/src/chapter6/Example04.java b/src/chapter6/Example04.java
index c722543..c1f270c 100644
--- a/src/chapter6/Example04.java
+++ b/src/chapter6/Example04.java
@@ -1,4 +1,24 @@
 package chapter6;
 
+import java.util.ArrayList;
+import java.util.Iterator;
+
 public class Example04 {
+    public static void main(String[] args) {
+        ArrayList<String> list = new ArrayList<>();
+        list.add("张三");
+        list.add("李四");
+        list.add("王五");
+        list.add("张三");
+
+        Iterator<String> iterator = list.iterator();
+        while (iterator.hasNext()) {
+            String name = iterator.next();
+            if (name.equals("张三")) {
+                iterator.remove();
+            }
+        }
+
+        System.out.println(list);
+    }
 }