From b2396a2150ada5c1884f13c91b19b0fee19e52f2 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Tue, 21 Jul 2026 16:16:58 +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=A04=5F=E8=8E=B7=E5=8F=96=E5=81=B6=E6=95=B0?=
 =?UTF-8?q?=E9=9B=86=E5=90=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 day07/src/com/inmind/arraylist03/Test14.java | 43 +++++++++++++++++++-
 1 file changed, 42 insertions(+), 1 deletion(-)

diff --git a/day07/src/com/inmind/arraylist03/Test14.java b/day07/src/com/inmind/arraylist03/Test14.java
index 938c80f..89b050f 100644
--- a/day07/src/com/inmind/arraylist03/Test14.java
+++ b/day07/src/com/inmind/arraylist03/Test14.java
@@ -1,12 +1,53 @@
 package com.inmind.arraylist03;
+
+import java.util.ArrayList;
+
 /*
 常用类-ArrayList-练习4_获取偶数集合
  */
 public class Test14 {
     //有一个集合，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
     public static void main(String[] args) {
-        //1.创建新集合方式，添加偶数
         //2.在原集合的基础上，删除奇数
+        ArrayList<Integer> list = new ArrayList<Integer>();
+        list.add(1);
+        list.add(1);
+        list.add(2);
+        list.add(3);
+        list.add(4);
+        list.add(5);
+        list.add(8);
+        list.add(9);
+        for (int i = 0; i < list.size(); i++) {
+            Integer temp = list.get(i);//对应元素
+            if (temp % 2 != 0) {//是奇数就删除
+                list.remove(i);
+                //注意：在集合遍历中删除一个元素，索引位置前移一位，保证数据不跳过
+                i --;
+            }
+        }
+        System.out.println(list);
+    }
 
+    //方式一
+    public static void method1(String[] args) {
+        //1.创建新集合方式，添加偶数
+        ArrayList<Integer> list = new ArrayList<Integer>();
+        list.add(1);
+        list.add(3);
+        list.add(4);
+        list.add(5);
+        list.add(8);
+        list.add(9);
+
+        ArrayList<Integer> oushuList = new ArrayList<Integer>();
+        //遍历集合，取出每个元素,判断是否是偶数，是则添加到新集合中
+        for (int i = 0; i < list.size(); i++) {
+            Integer temp = list.get(i);
+            if (temp % 2 == 0) {
+                oushuList.add(temp);
+            }
+        }
+        System.out.println(oushuList);
     }
 }