From 79cf925b276cd9a5b00b97c62696bb4f8bda0e23 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Thu, 15 Oct 2026 11:30:07 +0800
Subject: [PATCH] =?UTF-8?q?s-day04--Map=E9=9B=86=E5=90=88=E7=9A=84?=
 =?UTF-8?q?=E7=AC=AC=E4=BA=8C=E7=A7=8D=E9=81=8D=E5=8E=86=E6=96=B9=E5=BC=8F?=
 =?UTF-8?q?(=E9=94=AE=E5=80=BC=E5=AF=B9=E9=81=8D=E5=8E=86)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 s-day04/src/com/inmind/map01/MapDemo03.java | 28 +++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 s-day04/src/com/inmind/map01/MapDemo03.java

diff --git a/s-day04/src/com/inmind/map01/MapDemo03.java b/s-day04/src/com/inmind/map01/MapDemo03.java
new file mode 100644
index 0000000..d7db38b
--- /dev/null
+++ b/s-day04/src/com/inmind/map01/MapDemo03.java
@@ -0,0 +1,28 @@
+package com.inmind.map01;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+
+/*
+4.Map集合的第二种遍历方式(键值对遍历)
+- public Set<Map.Entry<K,V>> entrySet(): 获取到Map集合中所有的键值对对象的集合(Set集合)。
+ */
+public class MapDemo03 {
+    public static void main(String[] args) {
+        //创建一个键和值都是String的双列集合
+        Map<String, String> map = new HashMap<>();
+        map.put("刘备", "孙尚香");
+        map.put("吕布", "貂蝉");
+        map.put("张飞", "夏侯驰");
+        System.out.println(map);
+        //调用entrySet方法，得到set集合
+        Set<Map.Entry<String, String>> entries = map.entrySet();
+        //set集合的遍历
+        for (Map.Entry<String, String> entry : entries) {
+            String key = entry.getKey();
+            String value = entry.getValue();
+            System.out.println(key+"-"+value);
+        }
+    }
+}