From d45f0ae07fd5691fb4cec7efed3921dd00911ace Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Tue, 20 Jan 2026 10:34:36 +0800
Subject: [PATCH] =?UTF-8?q?day07-=E5=B8=B8=E7=94=A8=E7=B1=BB-ArrayList-?=
 =?UTF-8?q?=E6=93=8D=E4=BD=9C=E7=BB=83=E4=B9=A0?=
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---
 day07/src/com/inmind/arraylist03/Demo10.java | 30 ++++++++++++++++++++
 day07/src/com/inmind/arraylist03/Test11.java |  8 ++++++
 day07/src/com/inmind/arraylist03/Test12.java | 10 +++++++
 3 files changed, 48 insertions(+)
 create mode 100644 day07/src/com/inmind/arraylist03/Demo10.java
 create mode 100644 day07/src/com/inmind/arraylist03/Test11.java
 create mode 100644 day07/src/com/inmind/arraylist03/Test12.java

diff --git a/day07/src/com/inmind/arraylist03/Demo10.java b/day07/src/com/inmind/arraylist03/Demo10.java
new file mode 100644
index 0000000..d3f1038
--- /dev/null
+++ b/day07/src/com/inmind/arraylist03/Demo10.java
@@ -0,0 +1,30 @@
+package com.inmind.arraylist03;
+
+import java.util.ArrayList;
+
+/*
+常用类_ArrayList_添加对象
+创建一个保存学生类对象的集合，对每个学生进行遍历操作
+ */
+public class Demo10 {
+    public static void main(String[] args) {
+        ArrayList<Student> studentList = new ArrayList<>();
+        //创建3个学生
+        Student s1 = new Student();
+        Student s2 = new Student("张三");
+        studentList.add(s1);
+        studentList.add(s2);
+        //使用匿名对象添加到集合中
+        studentList.add(new Student("李四", 20));
+
+        System.out.println(studentList.size());//3
+        //可以使用for循环，对集合的每个元素进行操作
+        for (int i = 0; i < studentList.size(); i++) {
+            Student s = studentList.get(i);
+            System.out.println(s);
+            System.out.println(s.getName());
+            System.out.println(s.getAge());
+        }
+
+    }
+}
diff --git a/day07/src/com/inmind/arraylist03/Test11.java b/day07/src/com/inmind/arraylist03/Test11.java
new file mode 100644
index 0000000..26dcd2d
--- /dev/null
+++ b/day07/src/com/inmind/arraylist03/Test11.java
@@ -0,0 +1,8 @@
+package com.inmind.arraylist03;
+/*
+ArrayList_练习1_指定格式拼接字符串
+定义以指定格式打印集合的方法(ArrayList类型作为参数)，使用@分隔每个元素。
+格式参照: [元素@元素@元素]。
+ */
+public class Test11 {
+}
diff --git a/day07/src/com/inmind/arraylist03/Test12.java b/day07/src/com/inmind/arraylist03/Test12.java
new file mode 100644
index 0000000..82137e8
--- /dev/null
+++ b/day07/src/com/inmind/arraylist03/Test12.java
@@ -0,0 +1,10 @@
+package com.inmind.arraylist03;
+/*
+常用类_ArrayList_练习2_获取偶数集合
+有一个原本的集合，该集合中有正整数，1,3,4,5,8,9
+将集合中的偶数都取出来，保存，奇数不要
+
+实现方式要有2种：1.创建新集合实现   2.不创建新集合实现
+ */
+public class Test12 {
+}