{"id":10003,"date":"2023-11-28T21:23:46","date_gmt":"2023-11-28T13:23:46","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=10003"},"modified":"2023-12-07T10:40:53","modified_gmt":"2023-12-07T02:40:53","slug":"jvm-zhong-de-chang-liang-chi-zhi-dao-ma","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/jvm-zhong-de-chang-liang-chi-zhi-dao-ma\/","title":{"rendered":"JVM\u4e2d\u7684\u5e38\u91cf\u6c60\u77e5\u9053\u5417\uff1f"},"content":{"rendered":"<p>\u662f\u7684\uff0cJava\u865a\u62df\u673a\u4e2d\u7684\u5e38\u91cf\u6c60\u662f\u4e00\u5757\u7528\u4e8e\u5b58\u653e\u7f16\u8bd1\u671f\u751f\u6210\u7684\u5404\u79cd\u5b57\u9762\u91cf\uff08literal\uff09\u548c\u7b26\u53f7\u5f15\u7528\uff08symbolic reference\uff09\u7684\u5185\u5b58\u533a\u57df\u3002\u5e38\u91cf\u6c60\u5728\u4e0d\u540c\u7684\u5730\u65b9\u6709\u4e0d\u540c\u7684\u5b9e\u73b0\uff0c\u5305\u62ec\u7c7b\u6587\u4ef6\u4e2d\u7684\u5e38\u91cf\u6c60\u548c\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u3002<\/p>\n<h3><a id=\"1%E7%B1%BB%E6%96%87%E4%BB%B6%E5%B8%B8%E9%87%8F%E6%B1%A0%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>1. \u7c7b\u6587\u4ef6\u5e38\u91cf\u6c60\uff1a<\/h3>\n<p>\u5728Java\u7c7b\u6587\u4ef6\uff08.class\u6587\u4ef6\uff09\u4e2d\uff0c\u6709\u4e00\u4e2a\u5e38\u91cf\u6c60\u8868\uff08Constant Pool Table\uff09\u5b58\u50a8\u4e86\u7f16\u8bd1\u671f\u751f\u6210\u7684\u5404\u79cd\u5b57\u9762\u91cf\u548c\u7b26\u53f7\u5f15\u7528\u3002\u8fd9\u4e9b\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u7c7b\u548c\u63a5\u53e3\u7684\u5168\u9650\u5b9a\u540d\uff08fully qualified name\uff09\uff1a<\/strong> \u4f8b\u5982\uff0cjava.lang.Object\u3002<\/li>\n<li><strong>\u5b57\u6bb5\u7684\u540d\u79f0\u548c\u63cf\u8ff0\u7b26\uff1a<\/strong> \u4f8b\u5982\uff0c&quot;count&quot;\u548c&quot;I&quot;\u3002<\/li>\n<li><strong>\u65b9\u6cd5\u7684\u540d\u79f0\u548c\u63cf\u8ff0\u7b26\uff1a<\/strong> \u4f8b\u5982\uff0c&quot;toString&quot;\u548c&quot;()Ljava\/lang\/String;&quot;\u3002<\/li>\n<li><strong>\u5b57\u9762\u91cf\uff1a<\/strong> \u4f8b\u5982\uff0c\u5b57\u7b26\u4e32\u3001\u6574\u6570\u3001\u6d6e\u70b9\u6570\u7b49\u3002<\/li>\n<\/ul>\n<h3><a id=\"2%E8%BF%90%E8%A1%8C%E6%97%B6%E5%B8%B8%E9%87%8F%E6%B1%A0%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>2. \u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\uff1a<\/h3>\n<p>\u6bcf\u4e2a\u7c7b\u5728\u88ab\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\u540e\uff0c\u90fd\u6709\u4e00\u4e2a\u5bf9\u5e94\u7684\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u3002\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u662f\u5728\u7c7b\u52a0\u8f7d\u65f6\u4ece\u7c7b\u6587\u4ef6\u5e38\u91cf\u6c60\u4e2d\u590d\u5236\u800c\u6765\u7684\uff0c\u7528\u4e8e\u5b58\u50a8\u4e00\u4e9b\u5728\u8fd0\u884c\u671f\u95f4\u751f\u6210\u7684\u5e38\u91cf\u3002\u5b83\u662f\u65b9\u6cd5\u533a\u7684\u4e00\u90e8\u5206\u3002<\/p>\n<h3><a id=\"%E5%AD%97%E7%AC%A6%E4%B8%B2%E5%B8%B8%E9%87%8F%E6%B1%A0%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\uff1a<\/h3>\n<p>\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\u662f\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u4e2d\u7684\u4e00\u90e8\u5206\uff0c\u7528\u4e8e\u5b58\u50a8\u5b57\u7b26\u4e32\u5e38\u91cf\u3002\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\u7684\u7279\u70b9\u662f\uff0c\u5982\u679c\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\u4e2d\u5df2\u7ecf\u5b58\u5728\u76f8\u540c\u5185\u5bb9\u7684\u5b57\u7b26\u4e32\uff0c\u5219\u4e0d\u4f1a\u91cd\u590d\u521b\u5efa\uff0c\u800c\u662f\u8fd4\u56de\u5df2\u5b58\u5728\u7684\u5f15\u7528\u3002\u8fd9\u662f\u56e0\u4e3a\u5b57\u7b26\u4e32\u5728Java\u4e2d\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u56e0\u6b64\u53ef\u4ee5\u8fdb\u884c\u8fd9\u79cd\u4f18\u5316\u3002<\/p>\n<p>\u4f8b\u5982\uff1a<\/p>\n<pre><code class=\"language-java\">String s1 = &quot;Hello&quot;;\nString s2 = &quot;Hello&quot;;\n\n\/\/ s1\u548cs2\u5b9e\u9645\u4e0a\u5f15\u7528\u4e86\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\u4e2d\u76f8\u540c\u7684\u5b57\u7b26\u4e32\u5bf9\u8c61\nSystem.out.println(s1 == s2); \/\/ true\n<\/code><\/pre>\n<p>\u4f7f\u7528\u5e38\u91cf\u6c60\u6709\u52a9\u4e8e\u51cf\u5c11\u5185\u5b58\u7684\u6d88\u8017\uff0c\u63d0\u9ad8\u5b57\u7b26\u4e32\u6bd4\u8f83\u7684\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u662f\u7684\uff0cJava\u865a\u62df\u673a\u4e2d\u7684\u5e38\u91cf\u6c60\u662f\u4e00\u5757\u7528\u4e8e\u5b58\u653e\u7f16\u8bd1\u671f\u751f\u6210\u7684\u5404\u79cd\u5b57\u9762\u91cf\uff08literal\uff09\u548c\u7b26\u53f7\u5f15\u7528\uff08symboli [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[119],"tags":[],"class_list":["post-10003","post","type-post","status-publish","format-standard","hentry","category-jvm"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10003","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=10003"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10003\/revisions"}],"predecessor-version":[{"id":16785,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10003\/revisions\/16785"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=10003"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=10003"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=10003"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}