From 45eef578c7f0af46b323e750ed5b4af8887574b2 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Tue, 22 Sep 2026 10:27:37 +0800
Subject: [PATCH] =?UTF-8?q?day07--=E5=B8=B8=E7=94=A8=E7=B1=BB-ArrayList-?=
 =?UTF-8?q?=E7=BB=83=E4=B9=A02=5F=E6=B7=BB=E5=8A=A0=E5=AF=B9=E8=B1=A1?=
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---
 day07/src/com/inmind/arraylist03/Demo09.java | 29 ++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 day07/src/com/inmind/arraylist03/Demo09.java

diff --git a/day07/src/com/inmind/arraylist03/Demo09.java b/day07/src/com/inmind/arraylist03/Demo09.java
new file mode 100644
index 0000000..a57b34e
--- /dev/null
+++ b/day07/src/com/inmind/arraylist03/Demo09.java
@@ -0,0 +1,29 @@
+package com.inmind.arraylist03;
+
+import java.util.ArrayList;
+
+/*
+常用类-ArrayList-练习2_添加对象
+ */
+public class Demo09 {
+    //创建一个保存book对象的容器，添加3本书，通过集合遍历判断出哪本书最贵
+    public static void main(String[] args) {
+        ArrayList<Book> bookList = new ArrayList<>();
+        //先创建3本书，或者在添加时，进行创建
+        //Book book1 = new Book("b001", "书1", 10.0, "2020-1-1");
+        Book book2 = new Book("b001", "书2", 10.0, "2020-1-1");
+        Book book3 = new Book("b001", "书3", 50.0, "2020-1-1");
+        bookList.add(new Book("b001", "书1", 30.0, "2020-1-1"));
+        bookList.add(book2);
+        bookList.add(book3);
+        //集合的变量
+        Book maxBook = bookList.get(0);
+        for (int i = 0; i < bookList.size(); i++) {
+            Book book = bookList.get(i);
+            if (book.getPrice() > maxBook.getPrice()) {
+                maxBook = book;
+            }
+        }
+        maxBook.showBook();
+    }
+}