{"id":395,"date":"2024-09-16T19:17:26","date_gmt":"2024-09-16T11:17:26","guid":{"rendered":"http:\/\/www.cmd137blog.top\/?p=395"},"modified":"2024-09-16T20:12:24","modified_gmt":"2024-09-16T12:12:24","slug":"java-arraylist","status":"publish","type":"post","link":"http:\/\/www.cmd137blog.top\/?p=395","title":{"rendered":"JAVA-ArrayList"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">0 \u96c6\u5408<\/h1>\n\n\n\n<p>\u96c6\u5408\u7684\u7279\u70b9\uff08\u76f8\u8f83\u4e8e\u6570\u7ec4\uff09\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u81ea\u52a8\u4f38\u7f29\u3001\u53ef\u957f\u53ef\u77ed<\/li>\n\n\n\n<li>\u53ef\u4ee5\u5b58\u5f15\u7528\u6570\u636e\u7c7b\u578b\uff0c\u4e0d\u80fd\u76f4\u63a5\u5b58\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff08\u53ef\u4ee5\u53d8\u4e3a\u5bf9\u5e94\u7684\u5305\u88c5\u7c7b\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<p>ArrayList\u4f7f\u7528\u7684\u6700\u591a\u3002\u7c7b\u4f3c\u4e8eC++\u4e2d\u7684vector\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">1 \u521b\u5efa\u4e0e\u8f93\u51fa<\/h1>\n\n\n\n<p>ArrayList\u672c\u8d28\u540cvector\u4e00\u6837\uff0c\u662f\u4e00\u7c7b\u6cdb\u578b\u3002\u6240\u4ee5\u521b\u5efa\u65f6\u9700\u6307\u5b9a\u5b58\u50a8\u7c7b\u578b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ArrayList&lt;string> list = new ArrayList&lt;string>();\nArrayList&lt;Character> list = new ArrayList&lt;>()\nArrayList&lt;Integer> list = new ArrayList&lt;>();\/\/JDK7\u540e\u9762\u7684\u7c7b\u578b\u53ef\u7701\u7565\uff0c\u4f46\u5fc5\u987b\u6709\u5c16\u62ec\u53f7<\/code><\/pre>\n\n\n\n<p>java\u5bf9ArrayList\u505a\u4e86\u4e9b\u9884\u5904\u7406\uff0c\u5f53sout\u76f4\u63a5\u8f93\u51faAL \u5bf9\u8c61\u65f6\uff0c\u4f1a\u8f93\u51fa\u6240\u542b\u5185\u5bb9\u800c\u975e\u5730\u5740\u3002\u4e14\u4f1a\u7528\u3010\u3011\u8fdb\u884c\u5305\u88f9\u3002<\/p>\n\n\n\n<p>\u5982\uff1a\u201c[\u5185\u5bb91\uff0c\u5185\u5bb92\uff0c&#8230;]\u201d<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">2 \u5e38\u7528\u6210\u5458\u65b9\u6cd5<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>boolean add(E e)  :  \u6dfb\u52a0\u5143\u7d20\uff0c\u8fd4\u56de\u503c\u8868\u793a\u662f\u5426\u6210\u529f<\/li>\n\n\n\n<li>boolean remove(E e) : \u5220\u9664\u6307\u5b9a\u5185\u5bb9\u5143\u7d20<\/li>\n\n\n\n<li>E remove(int index) : \u5220\u9664\u6307\u5b9a\u7d22\u5f15\u5143\u7d20\uff0c\u8fd4\u56de\u88ab\u5220\u9664\u5143\u7d20<\/li>\n\n\n\n<li>E set(int index,E e) :  \u4fee\u6539\uff08\u66ff\u6362\uff09\u6307\u5b9a\u7d22\u5f15\u4e0b\u7684\u5143\u7d20\uff0c\u8fd4\u56de\u539f\u6765\u7684\u5143\u7d20<\/li>\n\n\n\n<li>E get(int index) \uff1a \u83b7\u53d6\u6307\u5b9a\u7d22\u5f15\u5143\u7d20<\/li>\n\n\n\n<li>int size() :  \u8fd4\u56de\u96c6\u5408\u5143\u7d20\u4e2a\u6570<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">3 \u6848\u4f8b<\/h1>\n\n\n\n<pre class=\"wp-block-code\"><code>public class ArrayListTest {\n    public static void main(String&#91;] args) {\n        Scanner sc = new Scanner(System.in);\n        ArrayList&lt;Student> slist = new ArrayList&lt;>();\n\n        for (int i = 0; i &lt; 3; i++) {\n            Student s=new Student();\n            String name= sc.next();\n            int age =sc.nextInt();\n\n            s.setAge(age);\n            s.setName(name);\n\n            slist.add(s);\n        }\n\n        System.out.println(slist);\n        \n        for (int i = 0; i &lt; slist.size(); i++) {\n            System.out.println(slist.get(i).getName());\n            System.out.println(slist.get(i).getAge());\n            System.out.println();\n        }\n        \n    }\n}<\/code><\/pre>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>0 \u96c6\u5408 \u96c6\u5408\u7684\u7279\u70b9\uff08\u76f8\u8f83\u4e8e\u6570\u7ec4\uff09\uff1a ArrayList\u4f7f\u7528\u7684\u6700\u591a\u3002\u7c7b\u4f3c\u4e8eC++\u4e2d\u7684vector\u3002 1 \u521b\u5efa\u4e0e [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[56],"tags":[25],"class_list":["post-395","post","type-post","status-publish","format-standard","hentry","category-java","tag-java"],"_links":{"self":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts\/395","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=395"}],"version-history":[{"count":1,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts\/395\/revisions"}],"predecessor-version":[{"id":396,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts\/395\/revisions\/396"}],"wp:attachment":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=395"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=395"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=395"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}