{"id":72,"date":"2021-08-25T09:56:08","date_gmt":"2021-08-25T01:56:08","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/javav2\/?p=72"},"modified":"2021-08-25T12:11:27","modified_gmt":"2021-08-25T04:11:27","slug":"java-lang-object%e3%80%81objects","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/javav2\/post-72.html","title":{"rendered":"java.lang.Object\u3001Objects"},"content":{"rendered":"\n<h2>Object\u7c7b<\/h2>\n\n\n\n<p>Object\u7c7b\u662f\u4efb\u4f55\u7c7b\u7684\u6839\u7c7b\uff0c\u6240\u6709\u7c7b\u5747\u7ee7\u627f\u81eaObject\uff0c<\/p>\n\n\n\n<p>jdk\u53c2\u8003\u6587\u6863\u4f20\u9001\u95e8\uff1a<a href=\"https:\/\/java-api.52dixiaowo.com\/libs\/jdk-6-zh\/java\/lang\/Object.html\" target=\"_blank\" rel=\"noreferrer noopener\">java.lang.Object<\/a><\/p>\n\n\n\n<h4>\u6784\u9020\u65b9\u6cd5<\/h4>\n\n\n\n<p>\u53ea\u6709\u4e00\u4e2a\u7a7a\u53c2\u6784\u9020<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Object obj = new Object();<\/code><\/pre>\n\n\n\n<h4>\u65b9\u6cd5<\/h4>\n\n\n\n<p>1.toString()<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Object object  = new Object();\nSystem.out.println(object.toString());  \/\/\u8f93\u51fa\u5bf9\u8c61\u7684\u5730\u5740\nSystrm.out.println(object); \/\/\u7b80\u5316\u5199\u6cd5\uff0c\u76f4\u63a5\u6253\u5370\u5bf9\u8c61\u540d\n\/\/ \u901a\u5e38\u8986\u76d6\u91cd\u5199 toString \uff0c\u7528\u6765\u6253\u5370\u5bf9\u8c61\u7684\u5c5e\u6027<\/code><\/pre>\n\n\n\n<p>2.equals<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Object obj1 = new Object();\nObject obj2 = new Object();\nboolean equ = obj1.equals(obj2);   \/\/\u5224\u65ad\u5bf9\u8c61\u662f\u5426\u76f8\u7b49\uff0c\u6bd4\u8f83\u7684\u662f\u5730\u5740\u503c\nSystem.out.println(equ); \n\/\/ \u901a\u5e38\u8986\u76d6\u91cd\u5199 equals \uff0c\u7528\u6765\u6bd4\u8f83\u5bf9\u8c61\u7684\u5c5e\u6027<\/code><\/pre>\n\n\n\n<h2>Objects\u7c7b<\/h2>\n\n\n\n<p>Objects\u662f\u6307util\u5305\u4e0b\u7684Object\u5de5\u5177\u7c7b\uff0c\u4f20\u9001\u95e8\uff1a<a rel=\"noreferrer noopener\" href=\"https:\/\/java-api.52dixiaowo.com\/libs\/jdk-16-en\/api\/java.base\/java\/util\/Objects.html\" target=\"_blank\">java.util.Objects<\/a><\/p>\n\n\n\n<h4>\u9759\u6001\u65b9\u6cd5<\/h4>\n\n\n\n<p>Objects.equals\uff0c\u53ef\u4ee5\u907f\u514d\u7a7a\u6307\u9488\u5f02\u5e38<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>String s1 = \"\";\nString s2 = \"abc\";\nSystem.out.println(Objects.equals(s1,s2));  \/\/ false<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Object\u7c7b Object\u7c7b\u662f\u4efb\u4f55\u7c7b\u7684\u6839\u7c7b\uff0c\u6240\u6709\u7c7b\u5747\u7ee7\u627f\u81eaObject\uff0c jdk\u53c2\u8003\u6587\u6863\u4f20\u9001\u95e8\uff1ajava.l&hellip; <a href=\"https:\/\/www.52dixiaowo.com\/javav2\/post-72.html\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">java.lang.Object\u3001Objects<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts\/72"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/comments?post=72"}],"version-history":[{"count":0,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts\/72\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/media?parent=72"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/categories?post=72"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/tags?post=72"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}