{"id":1150,"date":"2026-04-01T08:38:34","date_gmt":"2026-04-01T00:38:34","guid":{"rendered":"https:\/\/yunyanglib.cn\/?p=1150"},"modified":"2026-04-01T08:38:35","modified_gmt":"2026-04-01T00:38:35","slug":"%e3%80%90java%e3%80%91%e6%b7%b1%e5%85%a5%e7%90%86%e8%a7%a3java%e4%b8%ad%e7%9a%84%e5%8c%85%ef%bc%9a%e5%91%bd%e5%90%8d%e7%a9%ba%e9%97%b4%e4%b8%8e%e4%bd%9c%e7%94%a8%e5%9f%9f%e5%ae%9e%e6%88%98","status":"publish","type":"post","link":"https:\/\/yunyanglib.cn\/?p=1150","title":{"rendered":"\u3010Java\u3011\u6df1\u5165\u7406\u89e3Java\u4e2d\u7684\u5305\uff1a\u547d\u540d\u7a7a\u95f4\u4e0e\u4f5c\u7528\u57df\u5b9e\u6218"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u4e3a\u4ec0\u4e48\u9700\u8981\u5305\uff1f\u89e3\u51b3 Java \u7684 &#8220;\u547d\u540d\u51b2\u7a81&#8221; \u75db\u70b9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f5c\u4e3a Java \u5f00\u53d1\u8005\uff0c\u4f60\u662f\u5426\u9047\u5230\u8fc7\u8fd9\u6837\u7684\u95ee\u9898\uff1a\u4e24\u4e2a\u4e0d\u540c\u529f\u80fd\u7684\u7c7b\u90fd\u53eb<code>Utils<\/code>\uff0c\u653e\u5728\u540c\u4e00\u4e2a\u9879\u76ee\u91cc\u76f4\u63a5\u62a5\u9519\uff1f\u8fd9\u5c31\u662f Java \u8bbe\u8ba1<code>package<\/code>\uff08\u5305\uff09\u7684\u6838\u5fc3\u539f\u56e0 \u2014\u2014<strong>\u521b\u5efa\u72ec\u7acb\u7684\u547d\u540d\u7a7a\u95f4<\/strong>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5173\u952e\u7ed3\u8bba\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5305\u672c\u8d28\u662f Java \u7684 &#8220;\u6587\u4ef6\u5939\u5206\u7c7b&#8221;\uff0c\u4f46\u6ca1\u6709\u7236\u5b50\u7ee7\u627f\u5173\u7cfb\uff08\u6bd4\u5982<code>java.util<\/code>\u548c<code>java.util.zip<\/code>\u662f\u5b8c\u5168\u72ec\u7acb\u7684\u4e24\u4e2a\u5305\uff09<\/li>\n\n\n\n<li>JVM \u8bc6\u522b\u7c7b\u7684\u552f\u4e00\u6807\u8bc6\u662f\u300c\u5b8c\u6574\u7c7b\u540d\u300d\uff08\u5305\u540d + \u7c7b\u540d\uff09\uff0c\u800c\u975e\u5355\u7eaf\u7684\u7c7b\u540d<\/li>\n\n\n\n<li>\u793a\u4f8b\uff1a<code>com.yunyang.utils.StringUtils<\/code>\u548c<code>com.example.utils.StringUtils<\/code>\u662f\u4e24\u4e2a\u5b8c\u5168\u4e0d\u540c\u7684\u7c7b<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001\u5305\u4f5c\u7528\u57df\uff1a\u9ed8\u8ba4\u7684 &#8220;\u8bbf\u95ee\u6743\u9650&#8221;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u4e00\u4e2a\u5b57\u6bb5\u6216\u65b9\u6cd5\u6ca1\u6709\u88ab<code>public<\/code>\u3001<code>protected<\/code>\u3001<code>private<\/code>\u4fee\u9970\u65f6\uff0c\u5b83\u5c31\u5c5e\u4e8e\u300c\u5305\u4f5c\u7528\u57df\u300d\u2014\u2014<strong>\u4ec5\u5141\u8bb8\u540c\u5305\u4e0b\u7684\u7c7b\u8bbf\u95ee<\/strong>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4ee3\u7801\u793a\u4f8b\uff1a\u5305\u4f5c\u7528\u57df\u7684\u5b9e\u9645\u5e94\u7528<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5305\u58f0\u660e\uff08\u5fc5\u987b\u653e\u5728.java\u6587\u4ef6\u7b2c\u4e00\u884c\uff09\npackage com.yunyang.demo;\n\n\/\/ \u540c\u5305\u4e0b\u7684User\u7c7b\npublic class User {\n    \/\/ \u5305\u4f5c\u7528\u57df\u5b57\u6bb5\uff08\u65e0\u8bbf\u95ee\u4fee\u9970\u7b26\uff09\n    String username;\n    \n    \/\/ \u5305\u4f5c\u7528\u57df\u65b9\u6cd5\n    void showName() {\n        System.out.println(\"\u7528\u6237\u540d\uff1a\" + username);\n    }\n}\n\n\/\/ \u540c\u5305\u4e0b\u7684Test\u7c7b\uff08\u53ef\u76f4\u63a5\u8bbf\u95eeUser\u7684\u5305\u4f5c\u7528\u57df\u6210\u5458\uff09\npublic class Test {\n    public static void main(String&#91;] args) {\n        User user = new User();\n        user.username = \"\u4e91\u626c\"; \/\/ \u76f4\u63a5\u8bbf\u95ee\u5305\u4f5c\u7528\u57df\u5b57\u6bb5\n        user.showName(); \/\/ \u76f4\u63a5\u8c03\u7528\u5305\u4f5c\u7528\u57df\u65b9\u6cd5\n    }\n}\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c<code>Test<\/code>\u7c7b\u653e\u5728\u5176\u4ed6\u5305\uff08\u5982<code>com.yunyang.other<\/code>\uff09\uff0c\u5219\u65e0\u6cd5\u8bbf\u95ee<code>username<\/code>\u548c<code>showName()<\/code>\uff0c\u7f16\u8bd1\u76f4\u63a5\u62a5\u9519\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001\u5bfc\u5165\u5305\u7684 3 \u79cd\u65b9\u5f0f\uff1a\u4f18\u96c5\u5f15\u7528\u5916\u90e8\u7c7b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 Java \u4e2d\u5f15\u7528\u5176\u4ed6\u5305\u7684\u7c7b\uff0c\u6709 3 \u79cd\u5e38\u7528\u5199\u6cd5\uff0c\u5404\u6709\u9002\u7528\u573a\u666f\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u76f4\u63a5\u5199\u5b8c\u6574\u7c7b\u540d\uff08\u4e0d\u63a8\u8350\uff0c\u4ee3\u7801\u5197\u4f59\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>public class Demo {\n    public static void main(String&#91;] args) {\n        \/\/ \u5b8c\u6574\u7c7b\u540d\uff1a\u5305\u540d+\u7c7b\u540d\n        java.util.ArrayList&lt;String> list = new java.util.ArrayList&lt;>(); \n    }\n}\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u4f7f\u7528<code>import<\/code>\u5bfc\u5165\uff08\u63a8\u8350\uff0c\u7b80\u6d01\u6e05\u6670\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5bfc\u5165\u5355\u4e2a\u7c7b\nimport java.util.ArrayList;\n\/\/ \u5bfc\u5165\u6574\u4e2a\u5305\u7684\u6240\u6709\u7c7b\uff08\u4e0d\u5305\u542b\u5b50\u5305\uff09\nimport java.util.*;\n\npublic class Demo {\n    public static void main(String&#91;] args) {\n        ArrayList&lt;String> list = new ArrayList&lt;>(); \/\/ \u76f4\u63a5\u4f7f\u7528\u7c7b\u540d\n        HashMap&lt;String,Object> map = new HashMap&lt;>();\n    }\n}\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3. <code>import static<\/code>\uff1a\u5bfc\u5165\u9759\u6001\u6210\u5458<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9002\u7528\u4e8e\u9891\u7e41\u4f7f\u7528\u7684\u9759\u6001\u5b57\u6bb5 \/ \u65b9\u6cd5\uff08\u5982<code>Math<\/code>\u7c7b\u7684\u5de5\u5177\u65b9\u6cd5\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5bfc\u5165Math\u7c7b\u7684\u6240\u6709\u9759\u6001\u6210\u5458\nimport static java.lang.Math.*;\n\npublic class Demo {\n    public static void main(String&#91;] args) {\n        double radius = 5;\n        double area = PI * pow(radius, 2); \/\/ \u76f4\u63a5\u4f7f\u7528PI\u548cpow()\uff0c\u65e0\u9700\u5199Math.\n        System.out.println(\"\u5706\u9762\u79ef\uff1a\" + area);\n    }\n}\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001\u7f16\u8bd1\u5668\u67e5\u627e\u7c7b\u7684\u89c4\u5219\uff1a\u907f\u514d\u547d\u540d\u51b2\u7a81<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u4ee3\u7801\u4e2d\u51fa\u73b0\u4e00\u4e2a\u7b80\u5355\u7c7b\u540d\uff08\u5982<code>ArrayList<\/code>\uff09\uff0c\u7f16\u8bd1\u5668\u4f1a\u6309\u4ee5\u4e0b\u987a\u5e8f\u67e5\u627e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5f53\u524d\u5305\u662f\u5426\u5b58\u5728\u8be5\u7c7b<\/li>\n\n\n\n<li><code>import<\/code>\u8bed\u53e5\u5bfc\u5165\u7684\u5305\u662f\u5426\u5305\u542b\u8be5\u7c7b<\/li>\n\n\n\n<li><code>java.lang<\/code>\u5305\uff08\u9ed8\u8ba4\u81ea\u52a8\u5bfc\u5165\uff09\u662f\u5426\u5305\u542b\u8be5\u7c7b<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u51b2\u7a81\u5904\u7406\u793a\u4f8b\uff1a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u540c\u65f6\u9700\u8981\u5bfc\u5165<code>mr.jun.Arrays<\/code>\u548c<code>java.util.Arrays<\/code>\uff0c\u5fc5\u987b\u4fdd\u7559\u4e00\u4e2a<code>import<\/code>\uff0c\u53e6\u4e00\u4e2a\u7528\u5b8c\u6574\u7c7b\u540d\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import java.util.Arrays; \/\/ \u5bfc\u5165java.util\u7684Arrays\n\npublic class Demo {\n    public static void main(String&#91;] args) {\n        int&#91;] arr = {3,1,2};\n        Arrays.sort(arr); \/\/ \u4f7f\u7528java.util.Arrays\n        \n        \/\/ \u5f15\u7528mr.jun.Arrays\uff0c\u5fc5\u987b\u5199\u5b8c\u6574\u7c7b\u540d\n        mr.jun.Arrays.print(arr);\n    }\n}\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e94\u3001\u6838\u5fc3\u603b\u7ed3<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5305\u7684\u6838\u5fc3\u4f5c\u7528\uff1a\u89e3\u51b3\u547d\u540d\u51b2\u7a81 + \u63a7\u5236\u8bbf\u95ee\u6743\u9650<\/li>\n\n\n\n<li>\u5305\u4f5c\u7528\u57df\uff1a\u65e0\u4fee\u9970\u7b26\u7684\u6210\u5458\uff0c\u4ec5\u540c\u5305\u53ef\u89c1<\/li>\n\n\n\n<li>\u5bfc\u5165\u4f18\u5148\u7ea7\uff1a\u5f53\u524d\u5305 > import \u5bfc\u5165 > java.lang \u9ed8\u8ba4\u5bfc\u5165<\/li>\n\n\n\n<li>\u51b2\u7a81\u89e3\u51b3\uff1a\u4f18\u5148\u7528 import\uff0c\u51b2\u7a81\u7c7b\u7528\u5b8c\u6574\u7c7b\u540d<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u5efa\u8bae\u9075\u5faa\u300c\u57df\u540d\u5012\u7f6e\u300d\u7684\u5305\u547d\u540d\u89c4\u8303\uff08\u5982<code>com.yunyang.project.module<\/code>\uff09\uff0c\u907f\u514d\u4e0e\u7b2c\u4e09\u65b9\u5305\u51b2\u7a81\uff5e<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u4e3a\u4ec0\u4e48\u9700\u8981\u5305\uff1f\u89e3\u51b3 Java \u7684 &#8220;\u547d\u540d\u51b2\u7a81&#8221; \u75db\u70b9 \u4f5c\u4e3a Java \u5f00\u53d1\u8005\uff0c\u4f60\u662f<\/p>\n<div class=\"more-link\">\n\t\t\t\t <a href=\"https:\/\/yunyanglib.cn\/?p=1150\" class=\"link-btn theme-btn\"><span>Read More <\/span> <i class=\"fa fa-caret-right\"><\/i><\/a>\n\t\t\t<\/div>\n","protected":false},"author":1,"featured_media":1153,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[15],"class_list":["post-1150","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java","tag-java"],"_links":{"self":[{"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/posts\/1150","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1150"}],"version-history":[{"count":2,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/posts\/1150\/revisions"}],"predecessor-version":[{"id":1152,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/posts\/1150\/revisions\/1152"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/media\/1153"}],"wp:attachment":[{"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1150"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1150"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1150"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}