{"id":272,"date":"2024-10-02T15:54:52","date_gmt":"2024-10-02T07:54:52","guid":{"rendered":"https:\/\/www.zackzzp.top\/?p=272"},"modified":"2024-10-02T15:54:52","modified_gmt":"2024-10-02T07:54:52","slug":"%e4%b8%80%e6%96%87%e7%90%86%e8%a7%a3java%e7%b1%bb%e5%8a%a0%e8%bd%bd%e8%bf%87%e7%a8%8b","status":"publish","type":"post","link":"http:\/\/www.zackzzp.top\/index.php\/2024\/10\/02\/%e4%b8%80%e6%96%87%e7%90%86%e8%a7%a3java%e7%b1%bb%e5%8a%a0%e8%bd%bd%e8%bf%87%e7%a8%8b\/","title":{"rendered":"\u4e00\u6587\u7406\u89e3java\u7c7b\u52a0\u8f7d\u8fc7\u7a0b"},"content":{"rendered":"

\u521d\u6b65\u4e86\u89e3<\/h2>\n

Java\u4f5c\u4e3a\u4e00\u95e8\u6210\u719f\u7684\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u8bed\u8a00\uff0c\u5728\u5e95\u5c42\u67b6\u6784\u4e2d\u878d\u5165\u4e86\u4e00\u4e2a\u590d\u6742\u800c\u7cbe\u5999\u7684\u7c7b\u52a0\u8f7d\u673a\u5236\u3002\u7c7b\u52a0\u8f7d\u5668\uff08ClassLoader\uff09\u662fJava\u865a\u62df\u673a\uff08JVM\uff09\u7684\u4e00\u90e8\u5206\uff0c\u8d1f\u8d23\u52a8\u6001\u52a0\u8f7d\u7c7b\u6587\u4ef6\u5230\u5185\u5b58\u4e2d\u3002Java\u4e2d\u7c7b\u52a0\u8f7d\u5668\u4ece\u9ad8\u5230\u4f4e\u4e3b\u8981\u5206\u4e09\u79cd\u542f\u52a8\u7c7b\u52a0\u8f7d\u5668\u3001\u6269\u5c55\u7c7b\u52a0\u8f7d\u5668\u3001\u5e94\u7528\u7a0b\u5e8f\u7c7b\u52a0\u8f7d\u5668<\/p>\n

\"image\"<\/div><\/p>\n

\n\u52a0\u8f7d\u673a\u5236\u6982\u8ff0<\/h2>\n

Java\u7c7b\u52a0\u8f7d\u4e3b\u8981\u5206\u4e3a\u4e09\u4e2a\u9636\u6bb5\uff1a\u52a0\u8f7d\uff08Loading\uff09\u3001\u94fe\u63a5\uff08Linking\uff09\u3001\u521d\u59cb\u5316\uff08Initialization\uff09\u3002<\/p>\n

1\u3001\u52a0\u8f7d\uff08Loading\uff09<\/h3>\n

\u5728\u52a0\u8f7d\u9636\u6bb5\uff0c\u7c7b\u52a0\u8f7d\u5668\u8d1f\u8d23\u8bfb\u53d6.class\u6587\u4ef6\uff0c\u5c06\u4e8c\u8fdb\u5236\u6570\u636e\u8f6c\u6362\u4e3a\u65b9\u6cd5\u533a\u4e2d\u7684\u8fd0\u884c\u65f6\u6570\u636e\u7ed3\u6784\uff0c\u5e76\u5728\u5806\u4e2d\u751f\u6210\u4e00\u4e2ajava.lang.Class\u5bf9\u8c61\uff0c\u4f5c\u4e3a\u65b9\u6cd5\u533a\u8fd9\u4e9b\u6570\u636e\u7684\u8bbf\u95ee\u5165\u53e3\u3002<\/p>\n

2\u3001\u94fe\u63a5\uff08Linking\uff09<\/h3>\n

\u94fe\u63a5\u9636\u6bb5\u53c8\u5206\u4e3a\u9a8c\u8bc1\uff08Verification\uff09\u3001\u51c6\u5907\uff08Preparation\uff09\u548c\u89e3\u6790\uff08Resolution\uff09\u4e09\u4e2a\u90e8\u5206\u3002<\/p>\n

\u9a8c\u8bc1\uff1a\u786e\u4fdd\u88ab\u52a0\u8f7d\u7c7b\u7684\u6b63\u786e\u6027\uff0c\u4ee5\u786e\u4fdd\u5b83\u6ee1\u8db3Java\u865a\u62df\u673a\u89c4\u8303\u7684\u8981\u6c42\u3002
\n\u51c6\u5907\uff1a\u4e3a\u7c7b\u7684\u9759\u6001\u53d8\u91cf\u5206\u914d\u5185\u5b58\uff0c\u5e76\u5c06\u5176\u521d\u59cb\u5316\u4e3a\u9ed8\u8ba4\u503c\uff08\u4ee5\u53ca\u9759\u6001\u5e38\u91cf\uff09\u3002
\n\u89e3\u6790\uff1a\u5c06\u7c7b\u4e2d\u7684\u7b26\u53f7\u5f15\u7528\u8f6c\u6362\u4e3a\u76f4\u63a5\u5f15\u7528\u3002\u6bd4\u5982\uff1a\u5c06\u65b9\u6cd5\u7684\u540d\u79f0\u548c\u63cf\u8ff0\u7b26\u8f6c\u6362\u4e3a\u6307\u5411\u65b9\u6cd5\u5728\u5185\u5b58\u4e2d\u7684\u5177\u4f53\u5730\u5740\u7684\u76f4\u63a5\u5f15\u7528<\/p>\n

\n3\u3001\u521d\u59cb\u5316\uff08Initialization\uff09<\/h3>\n

\u521d\u59cb\u5316\u9636\u6bb5\u662f\u7c7b\u52a0\u8f7d\u7684\u6700\u540e\u4e00\u4e2a\u9636\u6bb5\uff0c\u4e3b\u8981\u662f\u5bf9\u7c7b\u4e2d\u9759\u6001\u53d8\u91cf\u7684\u521d\u59cb\u5316\u548c\u6267\u884c\u9759\u6001\u4ee3\u7801\u5757\u3002\u5728\u521d\u59cb\u5316\u9636\u6bb5\uff0c\u865a\u62df\u673a\u4f1a\u5b8c\u6210\u4ee5\u4e0b\u5de5\u4f5c\uff1a<\/p>\n

\u6267\u884c\u7c7b\u6784\u9020\u5668\uff08\u65b9\u6cd5\uff09\uff0c\u8be5\u65b9\u6cd5\u662f\u7531\u7f16\u8bd1\u5668\u81ea\u52a8\u6536\u96c6\u7c7b\u4e2d\u6240\u6709\u9759\u6001\u53d8\u91cf\u7684\u8d4b\u503c\u52a8\u4f5c\u548c\u9759\u6001\u4ee3\u7801\u5757\u4e2d\u7684\u8bed\u53e5\u5408\u5e76\u4ea7\u751f\u7684\u3002
\n\u5982\u679c\u7c7b\u4e2d\u5b58\u5728\u591a\u4e2a\u9759\u6001\u4ee3\u7801\u5757\u6216\u9759\u6001\u53d8\u91cf\u521d\u59cb\u5316\u8bed\u53e5\uff0c\u865a\u62df\u673a\u4f1a\u6309\u7167\u5176\u5728\u6e90\u4ee3\u7801\u4e2d\u7684\u987a\u5e8f\u4f9d\u6b21\u6267\u884c\u3002<\/p>\n

\u9759\u6001\u53d8\u91cf\u4e0e\u975e\u9759\u6001\u53d8\u8138\u7684\u8d4b\u503c\u4e0e\u521d\u59cb\u5316\u8fc7\u7a0b<\/h2>\n

public class MyClass {<\/p>\n

static int number;
\nstatic String stringConstant = “Hello, World”;
\nstatic final int finalNumber = 42;
\nLong num = 12L;
\nObject o;
\nfinal Integer in;<\/p>\n

static {
\nnumber = 100;
\n}
\n}
\n1<\/p>\n

\n1\u3001\u9759\u6001\u53d8\u91cf<\/h3>\n

static int number;<\/p>\n

\u51c6\u5907\u9636\u6bb5\uff1a\u5206\u914d\u5185\u5b58\u7a7a\u95f4\u5728\u65b9\u6cd5\u533a\uff08JDK 8\u4e4b\u524d\u79f0\u4e3a\u6c38\u4e45\u4ee3\uff0cJDK 8\u53ca\u4ee5\u540e\u4e3a\u5143\u7a7a\u95f4\uff09\uff0c\u8bbe\u7f6e\u521d\u59cb\u503c\u4e3a0\u3002
\n\u521d\u59cb\u5316\u9636\u6bb5\uff1a\u5728\u9759\u6001\u4ee3\u7801\u5757\u4e2d\u88ab\u8d4b\u503c\u4e3a100\u3002
\nstatic String stringConstant = \u201cHello, World\u201d;<\/p>\n

\u51c6\u5907\u9636\u6bb5\uff1a\u65b9\u6cd5\u533a\u5206\u914d\u5185\u5b58\u5e76\u8bbe\u7f6estringConstant\u521d\u59cb\u503c\u4e3anull\u3002
\n\u521d\u59cb\u5316\u9636\u6bb5\uff1a\u5728\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\u4e2d\u521b\u5efa\u5b57\u7b26\u4e32”Hello, World”\uff0c\u5e76\u8ba9stringConstant\u6307\u5411\u5b83\u3002
\nstatic final int finalNumber = 42;<\/p>\n

\u51c6\u5907\u9636\u6bb5\uff1a\u56e0\u4e3a\u662f \u5e38\u91cf\uff08final\u4fee\u9970\u7684\u9759\u6001\u5b57\u6bb5\uff09\uff0cfinalNumber\u5728\u65b9\u6cd5\u533a\u5206\u914d\u5185\u5b58\u7a7a\u95f4\uff0c\u5e76\u4e14\u76f4\u63a5\u8bbe\u7f6e\u4e3a42\uff0c\u4e0d\u9700\u8981\u7b49\u5f85\u521d\u59cb\u5316\u9636\u6bb5\u3002<\/p>\n

\n2\u3001\u5b9e\u4f8b\u53d8\u91cf<\/h3>\n

Long num = 12L;<\/p>\n

\u5b9e\u4f8b\u5316\u9636\u6bb5\uff1a\u5f53\u521b\u5efa\u4e00\u4e2aMyClass\u5b9e\u4f8b\uff08new MyClass()\uff09\u65f6\uff0c\u5c06\u4e3anum\u5206\u914d\u5185\u5b58\u7a7a\u95f4\u5728\u5806\u4e0a\uff0c\u5e76\u4e14\u521b\u5efa\u4e00\u4e2aLong\u5bf9\u8c61\uff0c\u503c\u4e3a12\u3002
\nObject o;<\/p>\n

\u5b9e\u4f8b\u5316\u9636\u6bb5\uff1a\u5f53\u521b\u5efaMyClass\u5b9e\u4f8b\u65f6\uff0c\u5728\u5806\u4e0a\u5206\u914d\u5185\u5b58\u7a7a\u95f4\uff0c\u4f46\u521d\u59cb\u503c\u4e3anull\u3002\u5982\u679c\u540e\u7eed\u6709\u8d4b\u503c\u64cd\u4f5c\uff0c\u5219\u4f1a\u6307\u5411\u5177\u4f53\u7684\u5bf9\u8c61\u3002
\nfinal Integer in;<\/p>\n

\u5b9e\u4f8b\u5316\u9636\u6bb5\uff1a\u548cObject o\u4e00\u6837\uff0c\u5728\u5b9e\u4f8b\u5316\u65f6\u5728\u5806\u7a7a\u95f4\u5206\u914d\u5185\u5b58\u4f46\u521d\u59cb\u503c\u4e3anull\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u56e0\u4e3a\u5b83\u662ffinal\u7684\uff0c\u5b83\u5fc5\u987b\u5728\u6784\u9020\u51fd\u6570\u4e2d\u6216\u8005\u5728\u58f0\u660e\u65f6\u88ab\u521d\u59cb\u5316\uff0c\u5426\u5219\u4f1a\u5bfc\u81f4\u7f16\u8bd1\u9519\u8bef\u3002<\/p>\n

\n3\u3001\u9759\u6001\u521d\u59cb\u5316\u5757<\/h3>\n

static {\u2026}<\/p>\n

\u521d\u59cb\u5316\u9636\u6bb5\uff1a\u5728\u7c7b\u7684\u521d\u59cb\u5316\u9636\u6bb5\u6267\u884c\uff0c\u5373\u5728\u7c7b\u88ab\u9996\u6b21\u4e3b\u52a8\u4f7f\u7528\u65f6\u3002<\/p>\n

\n4\u3001\u603b\u7ed3<\/h3>\n

\u9759\u6001\u53d8\u91cf\u7684\u5185\u5b58\u7a7a\u95f4\u5206\u914d\u548c\u521d\u503c\u8bbe\u7f6e\u5728\u7c7b\u52a0\u8f7d\u7684\u51c6\u5907\u9636\u6bb5\u5b8c\u6210\uff0c\u9664\u4e86final\u4fee\u9970\u7684\u9759\u6001\u57fa\u672c\u6570\u636e\u7c7b\u578b\u548c\u5b57\u7b26\u4e32\u76f4\u63a5\u91cf\uff0c\u5b83\u4eec\u88ab\u8d4b\u4e88\u4e86\u7a0b\u5e8f\u4e2d\u7ed9\u51fa\u7684\u503c\u3002\u9759\u6001\u53d8\u91cf\u7684\u5177\u4f53\u8d4b\u503c\u64cd\u4f5c\u5728\u521d\u59cb\u5316\u9636\u6bb5\u5b8c\u6210\uff08\u5982\u9759\u6001\u521d\u59cb\u5316\u5757\u548c\u9759\u6001\u53d8\u91cf\u8d4b\u503c\u8bed\u53e5\uff09\u3002\u5b9e\u4f8b\u53d8\u91cf\u7684\u5185\u5b58\u5206\u914d\u5728\u5bf9\u8c61\u5b9e\u4f8b\u5316\u65f6\u5728\u5806\u4e0a\u5b8c\u6210\uff0c\u5b9e\u4f8b\u53d8\u91cf\u7684\u8d4b\u503c\u968f\u7740\u5bf9\u8c61\u7684\u6784\u9020\u8fc7\u7a0b\u5b8c\u6210\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u521d\u6b65\u4e86\u89e3 Java\u4f5c\u4e3a\u4e00\u95e8\u6210\u719f\u7684\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u8bed\u8a00\uff0c\u5728\u5e95\u5c42\u67b6\u6784\u4e2d\u878d\u5165\u4e86\u4e00\u4e2a\u590d\u6742\u800c\u7cbe\u5999\u7684\u7c7b\u52a0\u8f7d\u673a\u5236\u3002\u7c7b\u52a0\u8f7d\u5668\uff08Cl […]<\/p>\n","protected":false},"author":1,"featured_media":273,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-272","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/posts\/272","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/comments?post=272"}],"version-history":[{"count":2,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/posts\/272\/revisions"}],"predecessor-version":[{"id":274,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/posts\/272\/revisions\/274"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/media\/273"}],"wp:attachment":[{"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/media?parent=272"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/categories?post=272"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/tags?post=272"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}