{"id":196,"date":"2026-09-11T19:01:53","date_gmt":"2026-09-11T11:01:53","guid":{"rendered":"http:\/\/117.72.184.201\/?p=196"},"modified":"2026-09-11T20:44:34","modified_gmt":"2026-09-11T12:44:34","slug":"%e5%88%9d%e5%a7%8bjava","status":"publish","type":"post","link":"https:\/\/jinrunshan.cn\/index.php\/2026\/09\/11\/%e5%88%9d%e5%a7%8bjava\/","title":{"rendered":"\u521d\u8bc6java"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u7ae0\u8282\u8be6\u7ec6\u77e5\u8bc6\u70b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udda5\ufe0f \u4e00\u3001JVM\uff1aJava \u865a\u62df\u673a<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e3b\u9898\u5185\u5bb9<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ece&#8221;\u5199\u4ee3\u7801\u5230\u5e95\u9700\u8981\u4ec0\u4e48\u4e1c\u897f&#8221;\u5207\u5165\uff0c\u9996\u5148\u5f15\u51fa\u4e09\u5927\u8981\u7d20\u4e2d\u7684\u7b2c\u4e00\u9879\u2014\u2014JVM\u3002\u4ee5\u5199\u8fc7\u7684 Hello World \u4e3a\u4f8b\uff0c\u8bf4\u660e\u4ee3\u7801\u6700\u7ec8\u5fc5\u987b\u6709\u4e00\u4e2a&#8221;\u771f\u6b63\u8fd0\u884c\u5b83\u7684\u5730\u65b9&#8221;\uff0c\u8fd9\u4e2a\u5730\u65b9\u5c31\u662f JVM\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6838\u5fc3\u6982\u5ff5<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>JVM<\/strong> \u662f <code>Java Virtual Machine<\/code>\uff08Java \u865a\u62df\u673a\uff09\u4e09\u4e2a\u5355\u8bcd\u7684\u7f29\u5199\uff0c\u662f\u771f\u6b63\u8fd0\u884c Java \u7a0b\u5e8f\u7684\u5730\u65b9\u3002<\/li>\n\n\n\n<li>\u6ca1\u6709\u865a\u62df\u673a\uff0c\u4ee3\u7801\u5c31&#8221;\u6ca1\u5730\u513f\u8fd0\u884c&#8221;\uff0c\u56e0\u6b64\u5b83\u662f\u8fd0\u884c Java \u7a0b\u5e8f<strong>\u5fc5\u4e0d\u53ef\u5c11<\/strong>\u7684\u57fa\u7840\u8bbe\u65bd\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u6838\u5fc3\u7279\u6027\/\u5de5\u4f5c\u539f\u7406<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JVM \u8d1f\u8d23\u6267\u884c\u7f16\u8bd1\u540e\u7684\u5b57\u8282\u7801\uff08class \u6587\u4ef6\uff09\uff0c\u662f Java &#8220;\u4e00\u6b21\u7f16\u8bd1\u3001\u5230\u5904\u8fd0\u884c&#8221;\uff08\u8de8\u5e73\u53f0\uff09\u7279\u6027\u7684\u5173\u952e\u8f7d\u4f53\u3002<\/li>\n\n\n\n<li>\u5728\u89c6\u9891\u7ed9\u51fa\u7684\u4e09\u5c42\u7ed3\u6784\u4e2d\uff0cJVM \u5904\u4e8e<strong>\u6700\u5e95\u5c42\u3001\u88ab\u5305\u542b<\/strong>\u7684\u4f4d\u7f6e\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u5bf9\u6bd4\/\u793a\u4f8b\/\u6ce8\u610f\u4e8b\u9879<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6ce8\u610f\u4e8b\u9879<\/strong>\uff1a\u6b63\u786e\u62fc\u5199\u5e94\u4e3a <strong>Virtual Machine\uff08\u865a\u62df\u673a\uff09<\/strong>\uff0c\u6ce8\u610f\u4e0e &#8220;\u5782\u76f4\u673a\u5668&#8221; \u65e0\u5173\u3002<\/li>\n\n\n\n<li>JVM \u672c\u8eab\u4e0d\u76f4\u63a5\u7b49\u540c\u4e8e&#8221;\u5f00\u53d1\u73af\u5883&#8221;\uff0c\u5b83\u53ea\u662f\u8fd0\u884c\u73af\u5883\u7684\u4e00\u90e8\u5206\uff0c\u540e\u7eed\u7ae0\u8282\u4f1a\u8bf4\u660e\u5b83\u4e0e JDK\u3001JRE \u7684\u5173\u7cfb\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udce6 \u4e8c\u3001\u6838\u5fc3\u7c7b\u5e93\uff1aJava \u9884\u5148\u5199\u597d\u7684\u4ee3\u7801<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e3b\u9898\u5185\u5bb9<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f15\u51fa JVM \u4e4b\u540e\uff0c\u89c6\u9891\u63d0\u51fa\u7b2c\u4e8c\u4e2a\u5fc5\u8981\u8981\u7d20\u2014\u2014\u6838\u5fc3\u7c7b\u5e93\uff0c\u5e76\u56de\u5230 Hello World \u4ee3\u7801\u8bf4\u660e&#8221;\u54ea\u4e9b\u4e1c\u897f\u662f Java \u5df2\u7ecf\u66ff\u6211\u4eec\u5199\u597d\u7684&#8221;\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6838\u5fc3\u6982\u5ff5<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6838\u5fc3\u7c7b\u5e93<\/strong>\uff1aJava \u5df2\u7ecf\u9884\u5148\u5199\u597d\u3001\u53ef\u4ee5\u76f4\u63a5\u62ff\u6765\u4f7f\u7528\u7684\u4e00\u6279\u4ee3\u7801\u7684\u7edf\u79f0\u3002<\/li>\n\n\n\n<li>\u7a0b\u5e8f\u5458\u65e0\u9700\u81ea\u5df1\u5b9e\u73b0\u8fd9\u4e9b\u529f\u80fd\uff0c\u76f4\u63a5\u8c03\u7528\u5373\u53ef\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u6838\u5fc3\u7279\u6027\/\u5de5\u4f5c\u539f\u7406<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728 Hello World \u793a\u4f8b\u4e2d\uff0c<code>System<\/code>\u3001<code>out<\/code>\u3001<code>println<\/code> \u8fd9\u4e09\u4e2a\u90e8\u5206\u90fd\u662f Java \u4e8b\u5148\u5b9a\u4e49\u597d\u7684\u5185\u5bb9\u3002<\/li>\n\n\n\n<li>\u5b83\u4eec\u7ec4\u5408\u5728\u4e00\u8d77\u540e\uff0c\u4f5c\u7528\u662f\u628a\u5c0f\u62ec\u53f7\u91cc\u7684\u5185\u5bb9\u76f4\u63a5\u5c55\u793a\uff08\u6253\u5370\uff09\u51fa\u6765\uff0c\u6bcf\u4e2a\u5355\u8bcd\u90fd\u6709\u5176\u7279\u5b9a\u542b\u4e49\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u5bf9\u6bd4\/\u793a\u4f8b\/\u6ce8\u610f\u4e8b\u9879<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4ee3\u7801\u793a\u4f8b\uff08\u5bf9\u5e94\u89c6\u9891\u4e2d\u7684 Hello World\uff09\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-preformatted\">public class HelloWorld {<br> &nbsp; &nbsp;public static void main(String[] args) {<br> &nbsp; &nbsp; &nbsp; &nbsp;System.out.println(\"HelloWorld\");<br> &nbsp;  }<br>}<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5176\u4e2d <code>System.out.println(...)<\/code> \u5c31\u662f\u6838\u5fc3\u7c7b\u5e93\u7684\u5178\u578b\u7528\u6cd5\uff1a<code>System<\/code> \u662f\u7c7b\u3001<code>out<\/code> \u662f\u8f93\u51fa\u6d41\u5bf9\u8c61\u3001<code>println<\/code> \u662f\u6253\u5370\u6362\u884c\u7684\u65b9\u6cd5\u3002<\/li>\n\n\n\n<li><strong>\u6ce8\u610f\u4e8b\u9879<\/strong>\uff1a\u6838\u5fc3\u7c7b\u5e93\u662f&#8221;\u8fd0\u884c\u671f&#8221;\u4e5f\u8981\u7528\u5230\u7684\uff08\u4e0d\u50cf\u67d0\u4e9b\u5f00\u53d1\u5de5\u5177\u53ea\u5728\u5f00\u53d1\u671f\u4f7f\u7528\uff09\uff0c\u56e0\u6b64\u5b83\u5728 JDK \u4e0e JRE \u4e2d\u90fd\u5b58\u5728\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udee0\ufe0f \u4e09\u3001\u5f00\u53d1\u5de5\u5177\uff1a\u7f16\u8bd1\u3001\u8fd0\u884c\u4e0e\u8c03\u8bd5<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e3b\u9898\u5185\u5bb9<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u6307\u51fa\uff0c\u5149\u6709 JVM \u548c\u6838\u5fc3\u7c7b\u5e93\u8fd8\u4e0d\u591f\uff0c\u7a0b\u5e8f\u5458\u8fd8\u9700\u8981\u4e00\u6279&#8221;\u5f00\u53d1\u5de5\u5177&#8221;\u6765\u5b8c\u6210\u7f16\u8bd1\u3001\u8fd0\u884c\u3001\u8c03\u8bd5\u7b49\u52a8\u4f5c\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6838\u5fc3\u6982\u5ff5<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f00\u53d1\u5de5\u5177\u662f JDK \u4e2d\u5e2e\u52a9\u5f00\u53d1\u8005\u628a <code>.java<\/code> \u6e90\u6587\u4ef6\u53d8\u6210\u53ef\u8fd0\u884c\u7684 <code>.class<\/code> \u6587\u4ef6\u3001\u5e76\u8fd0\u884c\u548c\u6392\u67e5\u95ee\u9898\u7684\u4e00\u7ec4\u547d\u4ee4\u884c\u5de5\u5177\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6838\u5fc3\u7279\u6027\/\u5de5\u4f5c\u539f\u7406<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u5de5\u5177<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u4f5c\u7528<\/th><\/tr><\/thead><tbody><tr><td><code>javac<\/code><\/td><td><strong>\u7f16\u8bd1\u5de5\u5177<\/strong>\uff0c\u628a\u7f16\u5199\u597d\u7684 <code>.java<\/code> \u6587\u4ef6\u7f16\u8bd1\u6210 <code>.class<\/code> \u6587\u4ef6<\/td><\/tr><tr><td><code>java<\/code><\/td><td><strong>\u8fd0\u884c\u5de5\u5177<\/strong>\uff0c\u7528\u6765\u8fd0\u884c class \u6587\u4ef6\u4e2d\u7684\u4ee3\u7801<\/td><\/tr><tr><td><code>jdb<\/code><\/td><td><strong>\u8c03\u8bd5\u5de5\u5177<\/strong>\uff0c\u4ee3\u7801\u8f83\u591a\u65f6\u9010\u6b65\u67e5\u770b\u7a0b\u5e8f\u5982\u4f55\u8fd0\u884c<\/td><\/tr><tr><td><code>jhat<\/code><\/td><td>\u5806\u8f6c\u50a8\u5206\u6790\u5de5\u5177\uff0c\u53ef\u76d1\u63a7\u7a0b\u5e8f\u8fd0\u884c\u65f6\u7684\u5185\u5b58<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u5bf9\u6bd4\/\u793a\u4f8b\/\u6ce8\u610f\u4e8b\u9879<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u547d\u4ee4\u793a\u4f8b\uff08\u7f16\u8bd1 + \u8fd0\u884c\uff09\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-preformatted\">javac HelloWorld.java &nbsp; # \u7f16\u8bd1\uff1a\u751f\u6210 HelloWorld.class<br>java HelloWorld &nbsp; &nbsp; &nbsp; &nbsp; # \u8fd0\u884c class \u6587\u4ef6<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6ce8\u610f\u4e8b\u9879<\/strong>\uff1a\u5f00\u53d1\u5de5\u5177\u6570\u91cf\u5f88\u591a\uff0c\u53ea\u662f\u4e3e\u4f8b <code>javac<\/code>\u3001<code>java<\/code>\u3001<code>jdb<\/code>\u3001<code>jhat<\/code> \u7b49\uff1b\u5176\u4e2d\u90e8\u5206\u5de5\u5177\uff08\u5982\u7f16\u8bd1\u3001\u8c03\u8bd5\u5de5\u5177\uff09<strong>\u53ea\u5728\u5f00\u53d1\u9636\u6bb5\u4f7f\u7528<\/strong>\uff0c\u8fd9\u4e3a\u540e\u9762\u533a\u5206 JDK \u4e0e JRE \u57cb\u4e0b\u4f0f\u7b14\u3002<\/li>\n\n\n\n<li>\u4e0e C \u8bed\u8a00\u751f\u6001\u7684 gdb \u4e0d\u540c\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcbc \u56db\u3001JDK\uff1aJava \u5f00\u53d1\u5de5\u5177\u5305<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e3b\u9898\u5185\u5bb9<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c06\u524d\u9762\u4e09\u8981\u7d20\uff08JVM + \u6838\u5fc3\u7c7b\u5e93 + \u5f00\u53d1\u5de5\u5177\uff09\u6c47\u603b\uff0c\u6307\u51fa\u5b83\u4eec\u7ec4\u5408\u6210\u7684\u6574\u4f53\u5c31\u662f JDK\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6838\u5fc3\u6982\u5ff5<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>JDK<\/strong> \u5168\u79f0 <code>Java Development Kit<\/code>\uff0c\u5373 <strong>Java \u5f00\u53d1\u5de5\u5177\u5305<\/strong>\u3002<\/li>\n\n\n\n<li>\u7b80\u5355\u7406\u89e3\uff1a\u7a0b\u5e8f\u5458\u60f3\u8981<strong>\u7f16\u5199\u4ee3\u7801\u5e76\u6210\u529f\u8fd0\u884c<\/strong>\uff0c\u53ea\u9700\u8981\u5b89\u88c5\u4e00\u4e2a JDK \u5373\u53ef\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u6838\u5fc3\u7279\u6027\/\u5de5\u4f5c\u539f\u7406<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JDK \u5305\u542b\u4e09\u90e8\u5206\u5185\u5bb9\uff1a\n<ol class=\"wp-block-list\">\n<li><strong>JVM<\/strong>\uff1aJava \u7a0b\u5e8f\u771f\u6b63\u8fd0\u884c\u7684\u5730\u65b9\uff1b<\/li>\n\n\n\n<li><strong>\u6838\u5fc3\u7c7b\u5e93<\/strong>\uff1aJava \u4e8b\u5148\u5199\u597d\u7684\u4e1c\u897f\uff1b<\/li>\n\n\n\n<li><strong>\u5f00\u53d1\u5de5\u5177<\/strong>\uff1a\u5982 <code>javac<\/code>\u3001<code>java<\/code>\u3001<code>jdb<\/code>\u3001<code>jhat<\/code> \u7b49\u3002<\/li>\n<\/ol>\n<\/li>\n\n\n\n<li>\u4e09\u8005\u5171\u540c\u4fdd\u8bc1&#8221;\u80fd\u7f16\u5199\u3001\u80fd\u7f16\u8bd1\u3001\u80fd\u8fd0\u884c\u3001\u80fd\u8c03\u8bd5&#8221;\u7684\u5b8c\u6574\u5f00\u53d1\u95ed\u73af\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u5bf9\u6bd4\/\u793a\u4f8b\/\u6ce8\u610f\u4e8b\u9879<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JDK \u662f\u4e09\u8005\u4e2d\u5305\u542b\u5185\u5bb9<strong>\u6700\u591a\u3001\u5c42\u7ea7\u6700\u9ad8<\/strong>\u7684\u6982\u5ff5\uff0c\u5b83\u5185\u90e8\u5305\u542b JRE\uff0cJRE \u53c8\u5305\u542b JVM\u3002<\/li>\n\n\n\n<li><strong>\u6ce8\u610f\u4e8b\u9879<\/strong>\uff1a\u5bf9\u5f00\u53d1\u8005\uff08\u9700\u8981\u5199\u4ee3\u7801\u7684\u4eba\uff09\u6765\u8bf4\uff0c\u88c5 JDK \u662f\u6807\u51c6\u9009\u62e9\uff1b\u4f46\u5982\u679c\u53ea\u662f&#8221;\u8fd0\u884c\u522b\u4eba\u5df2\u7f16\u8bd1\u597d\u7684\u7a0b\u5e8f&#8221;\uff0c\u5b8c\u6574 JDK \u4e2d\u4f1a\u6709\u7528\u4e0d\u5230\u7684\u90e8\u5206\uff08\u5360\u7528\u786c\u76d8\u7a7a\u95f4\uff09\uff0c\u6b64\u65f6\u5f15\u51fa\u4e0b\u4e00\u7ae0 JRE \u7684\u6982\u5ff5\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b6\ufe0f \u4e94\u3001JRE\uff1aJava \u8fd0\u884c\u73af\u5883<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e3b\u9898\u5185\u5bb9<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f15\u5165\u4e00\u4e2a\u65b0\u573a\u666f\uff1a\u4ee3\u7801\u5df2\u7ecf\u5199\u5b8c\u3001\u7f16\u8bd1\u5b8c\u6210\uff0c\u53ea\u8981\u628a class \u6587\u4ef6\u4ea4\u7ed9\u522b\u4eba<strong>\u8fd0\u884c<\/strong>\uff0c\u5bf9\u65b9\u4e0d\u518d\u9700\u8981\u5f00\u53d1\u3002\u6b64\u65f6\u4e0d\u9700\u8981\u5b8c\u6574 JDK\uff0c\u53ea\u9700\u8981 JRE\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6838\u5fc3\u6982\u5ff5<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>JRE<\/strong> \u5168\u79f0 <code>Java Runtime Environment<\/code>\uff0c\u5373 <strong>Java \u8fd0\u884c\u73af\u5883<\/strong><\/li>\n\n\n\n<li>Java \u4f1a\u628a&#8221;\u8fd0\u884c\u671f\u5fc5\u9700\u7684\u90e8\u5206&#8221;\u5355\u72ec\u62bd\u79bb\u51fa\u6765\u7ec4\u6210 JRE\uff0c\u7279\u70b9\u662f<strong>\u77ed\u5c0f\u3001\u4e0d\u5360\u8fc7\u591a\u786c\u76d8\u7a7a\u95f4<\/strong>\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u6838\u5fc3\u7279\u6027\/\u5de5\u4f5c\u539f\u7406<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JRE \u7531\u4e09\u90e8\u5206\u7ec4\u6210\uff1a\n<ol class=\"wp-block-list\">\n<li><strong>JVM<\/strong>\uff1a\u4ee3\u7801\u771f\u6b63\u8fd0\u884c\u7684\u5730\u65b9\uff08\u5fc5\u9700\uff09\uff1b<\/li>\n\n\n\n<li><strong>\u6838\u5fc3\u7c7b\u5e93<\/strong>\uff1a\u8fd0\u884c\u4ee3\u7801\u65f6\u9700\u8981\u7528\u5230 Java \u9884\u5199\u597d\u7684\u5185\u5bb9\uff08\u5fc5\u9700\uff09\uff1b<\/li>\n\n\n\n<li><strong>\u8fd0\u884c\u5de5\u5177<\/strong>\uff1a\u5982\u8fd0\u884c\u4ee3\u7801\u7684 <code>java<\/code> \u5de5\u5177\uff08\u5fc5\u9700\uff09\u3002<\/li>\n<\/ol>\n<\/li>\n\n\n\n<li>\u5bf9\u4e8e&#8221;\u5df2\u6709 class \u6587\u4ef6\u3001\u53ea\u9700\u8fd0\u884c&#8221;\u7684\u573a\u666f\uff0c<code>javac<\/code> \u7f16\u8bd1\u5de5\u5177\u3001<code>jdb<\/code> \u8c03\u8bd5\u5de5\u5177\u7b49\u90fd\u4e0d\u518d\u9700\u8981\uff0c\u56e0\u6b64\u4e0d\u653e\u5165 JRE\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u5bf9\u6bd4\/\u793a\u4f8b\/\u6ce8\u610f\u4e8b\u9879<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u5bf9\u6bd4\u7ef4\u5ea6<\/th><th class=\"has-text-align-left\" data-align=\"left\">JDK\uff08Java \u5f00\u53d1\u5de5\u5177\u5305\uff09<\/th><th class=\"has-text-align-left\" data-align=\"left\">JRE\uff08Java \u8fd0\u884c\u73af\u5883\uff09<\/th><\/tr><\/thead><tbody><tr><td>\u5168\u79f0<\/td><td>Java Development Kit<\/td><td>Java Runtime Environment<\/td><\/tr><tr><td>\u5b9a\u4f4d<\/td><td>\u5f00\u53d1 + \u8fd0\u884c<\/td><td>\u4ec5\u8fd0\u884c<\/td><\/tr><tr><td>\u7ec4\u6210<\/td><td>JVM + \u6838\u5fc3\u7c7b\u5e93 + \u5f00\u53d1\u5de5\u5177\uff08\u542b\u7f16\u8bd1\/\u8c03\u8bd5\/\u8fd0\u884c\u5de5\u5177\uff09<\/td><td>JVM + \u6838\u5fc3\u7c7b\u5e93 + \u8fd0\u884c\u5de5\u5177<\/td><\/tr><tr><td>\u4f53\u79ef<\/td><td>\u8f83\u5927<\/td><td>\u8f83\u5c0f\u3001\u8f7b\u91cf<\/td><\/tr><tr><td>\u9002\u7528\u4eba\u7fa4\/\u573a\u666f<\/td><td>\u9700\u8981\u5199\u4ee3\u7801\u7684\u5f00\u53d1\u8005<\/td><td>\u53ea\u9700\u8fd0\u884c class \u6587\u4ef6\u7684\u7528\u6237<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6ce8\u610f\u4e8b\u9879<\/strong>\uff1a\u5f88\u591a\u8bfe\u7a0b\u4f1a\u5ffd\u7565&#8221;JRE \u4e2d\u4e5f\u5305\u542b\u8fd0\u884c\u5de5\u5177&#8221;\u8fd9\u4e00\u70b9\uff0c\u7279\u522b\u5f3a\u8c03\u2014\u2014<strong>\u8fd0\u884c\u4ee3\u7801\u7684 <code>java<\/code> \u5de5\u5177\u662f\u5fc5\u9700\u7684<\/strong>\uff0c\u56e0\u6b64 JRE \u5185\u90e8\u4e5f\u6709\u5de5\u5177\uff0c\u53ea\u662f\u4e0d\u542b\u7f16\u8bd1\u3001\u8c03\u8bd5\u7b49\u5f00\u53d1\u671f\u5de5\u5177\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd17 \u516d\u3001\u5c0f\u7ed3\uff1aJDK\u3001JRE\u3001JVM \u4e09\u8005\u7684\u5b9a\u4e49\u4e0e\u5305\u542b\u5173\u7cfb<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e3b\u9898\u5185\u5bb9<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u540e\u7528\u4e09\u4e2a\u95ee\u9898\u5bf9\u5168\u8bfe\u505a\u603b\u7ed3\uff1aJDK \u662f\u4ec0\u4e48\u3001JRE \u662f\u4ec0\u4e48\u3001\u4e09\u8005\u7684\u5305\u542b\u5173\u7cfb\u662f\u4ec0\u4e48\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6838\u5fc3\u6982\u5ff5<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>JDK<\/strong> = Java \u5f00\u53d1\u5de5\u5177\u5305 = JVM + \u6838\u5fc3\u7c7b\u5e93 + \u5f00\u53d1\u5de5\u5177\uff08\u542b <code>javac<\/code>\u3001<code>java<\/code>\u3001<code>jdb<\/code>\u3001<code>jhat<\/code> \u7b49\uff09\u3002<\/li>\n\n\n\n<li><strong>JRE<\/strong> = Java \u8fd0\u884c\u73af\u5883 = JVM + \u6838\u5fc3\u7c7b\u5e93 + \u8fd0\u884c\u5de5\u5177\uff08\u5982 <code>java<\/code>\uff09\u3002<\/li>\n\n\n\n<li><strong>\u5305\u542b\u5173\u7cfb<\/strong>\uff1aJDK \u5305\u542b JRE\uff0cJRE \u5305\u542b JVM\uff0c\u5373 <code>JDK \u2283 JRE \u2283 JVM<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u6838\u5fc3\u7279\u6027\/\u5de5\u4f5c\u539f\u7406<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e09\u8005\u662f&#8221;\u9010\u5c42\u5305\u542b&#8221;\u7684\u5173\u7cfb\uff1a\u5185\u5bb9\u6700\u591a\u7684 JDK \u5728\u6700\u5916\u5c42\uff0c\u6700\u6838\u5fc3\u3001\u6700\u5e95\u5c42\u7684 JVM \u5728\u6700\u5185\u5c42\u3002<\/li>\n\n\n\n<li>\u8fd9\u79cd\u5206\u5c42\u8bbe\u8ba1\u4f53\u73b0\u4e86&#8221;\u6309\u9700\u5206\u914d&#8221;\uff1a\u5f00\u53d1\u9009 JDK\uff0c\u53ea\u8fd0\u884c\u9009 JRE\uff0c\u800c JVM \u59cb\u7ec8\u662f\u8fd0\u884c\u4ee3\u7801\u7684\u57fa\u77f3\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u5bf9\u6bd4\/\u793a\u4f8b\/\u6ce8\u610f\u4e8b\u9879<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6ce8\u610f\u4e8b\u9879<\/strong>\uff1a\u672c\u89c6\u9891\u91c7\u7528\u7ecf\u5178\u7684&#8221;JDK \u5305\u542b JRE\u3001JRE \u5305\u542b JVM&#8221;\u6559\u5b66\u6a21\u578b\u3002\u73b0\u4ee3 JDK\uff08JDK 11 \u8d77\uff09\u5df2\u4e0d\u518d\u5355\u72ec\u53d1\u884c\u72ec\u7acb JRE\uff0c\u8fd0\u884c\u73af\u5883\u4e0e\u5f00\u53d1\u5de5\u5177\u7edf\u4e00\u6253\u5305\uff0c\u4f46<strong>\u6982\u5ff5\u4e0a\u7684\u5c42\u6b21\u5173\u7cfb<\/strong>\u4ecd\u662f\u7406\u89e3 Java \u4f53\u7cfb\u7684\u91cd\u8981\u57fa\u7840\u3002<\/li>\n\n\n\n<li>\u540c\u65f6\u4e5f\u6807\u5fd7\u7740&#8221;Java \u5165\u95e8\uff08\u7b2c\u4e00\u4e2a\u6a21\u5757\uff09&#8221;\u5b66\u4e60\u5b8c\u6bd5\uff0c\u540e\u7eed\u7ae0\u8282\u4ee3\u7801\u91cf\u5c06\u9010\u6b65\u589e\u591a\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u603b\u7ed3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u6982\u5ff5\u5173\u7cfb\u56fe<\/h3>\n\n\n\n<style>\n  .kt-mermaid{margin:1.5rem 0!important;padding:0!important;border:0!important;\n    background:transparent!important;display:flex;justify-content:center;overflow:visible}\n  .kt-mermaid pre,.kt-mermaid code{border:0!important;padding:0!important;margin:0!important;\n    background:transparent!important;overflow:visible;text-align:center}\n  .kt-mermaid svg{width:130%!important;height:auto!important;max-width:150%!important;background:transparent!important}\n  svg[id^=\"mermaid-\"]{background:transparent!important}\n  <\/style>\n\n  <script src=\"https:\/\/fastly.jsdelivr.net\/npm\/mermaid@10\/dist\/mermaid.min.js\"><\/script>\n  <script>mermaid.initialize({startOnLoad:true,themeVariables:{fontSize:'10px'}});<\/script>\n\n  <div class=\"kt-mermaid\">\n  <pre class=\"mermaid\">\n  flowchart TD\n      START([\"\u7a0b\u5e8f\u5458\u7f16\u5199\u5e76\u8fd0\u884c Java \u4ee3\u7801\"]) --> NEED[\"\u9700\u8981\u4e00\u4e2a\u5b8c\u6574\u7684\u8fd0\u884c\u73af\u5883\"]\n      NEED --> V1[\"JVM \u865a\u62df\u673a<br\/>\u4ee3\u7801\u771f\u6b63\u8fd0\u884c\u7684\u5730\u65b9\"]\n      NEED --> V2[\"\u6838\u5fc3\u7c7b\u5e93<br\/>Java \u9884\u5148\u5199\u597d\u7684\u4ee3\u7801\"]\n      NEED --> V3[\"\u5f00\u53d1\u5de5\u5177<br\/>javac \/ java \/ jdb \/ jhat \u7b49\"]\n\n      V1 & V2 & V3 --> SCENE{\"\u4f7f\u7528\u573a\u666f\u5224\u65ad\"}\n      SCENE -->|\"\u9700\u8981\u7f16\u5199 + \u7f16\u8bd1 + \u8fd0\u884c\"| JDK[\"JDK<br\/>Java Development Kit\"]\n      SCENE -->|\"\u53ea\u9700\u8fd0\u884c\u73b0\u6210\u7684 class \u6587\u4ef6\"| JRE[\"JRE<br\/>Java Runtime Environment\"]\n\n      JDK --> REL[\"\u4e09\u8005\u5305\u542b\u5173\u7cfb\"]\n      JRE --> REL\n      REL --> OUT[\"JDK \u2283 JRE \u2283 JVM\"]\n  <\/pre>\n  <\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u6838\u5fc3\u8981\u70b9\u901f\u8bb0<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u6982\u5ff5<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u4e00\u53e5\u8bdd\u603b\u7ed3<\/th><\/tr><\/thead><tbody><tr><td>JVM<\/td><td>Java \u865a\u62df\u673a\uff08Java Virtual Machine\uff09\uff0c\u662f Java \u7a0b\u5e8f\u771f\u6b63\u8fd0\u884c\u7684\u5730\u65b9<\/td><\/tr><tr><td>\u6838\u5fc3\u7c7b\u5e93<\/td><td>Java \u9884\u5148\u5199\u597d\u7684\u4ee3\u7801\uff08\u5982 <code>System.out.println<\/code>\uff09\uff0c\u76f4\u63a5\u8c03\u7528\u5373\u53ef<\/td><\/tr><tr><td>\u5f00\u53d1\u5de5\u5177<\/td><td>\u7f16\u8bd1\uff08<code>javac<\/code>\uff09\u3001\u8fd0\u884c\uff08<code>java<\/code>\uff09\u3001\u8c03\u8bd5\uff08<code>jdb<\/code>\uff09\u7b49\u547d\u4ee4\u884c\u5de5\u5177<\/td><\/tr><tr><td>JDK<\/td><td>Java \u5f00\u53d1\u5de5\u5177\u5305 = JVM + \u6838\u5fc3\u7c7b\u5e93 + \u5f00\u53d1\u5de5\u5177\uff0c\u9762\u5411&#8221;\u9700\u8981\u5199\u4ee3\u7801&#8221;\u7684\u5f00\u53d1\u8005<\/td><\/tr><tr><td>JRE<\/td><td>Java \u8fd0\u884c\u73af\u5883 = JVM + \u6838\u5fc3\u7c7b\u5e93 + \u8fd0\u884c\u5de5\u5177\uff0c\u9762\u5411&#8221;\u53ea\u9700\u8fd0\u884c class \u6587\u4ef6&#8221;\u7684\u573a\u666f<\/td><\/tr><tr><td>\u5305\u542b\u5173\u7cfb<\/td><td>JDK \u2283 JRE \u2283 JVM\uff0c\u5185\u5bb9\u7531\u591a\u5230\u5c11\u3001\u5c42\u7ea7\u7531\u9ad8\u5230\u4f4e<\/td><\/tr><tr><td>\u573a\u666f\u9009\u62e9<\/td><td>\u8981\u5f00\u53d1\u88c5 JDK\uff0c\u53ea\u8fd0\u884c\u88c5 JRE<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>\u7ae0\u8282\u8be6\u7ec6\u77e5\u8bc6\u70b9 \ud83d\udda5\ufe0f \u4e00\u3001JVM\uff1aJava \u865a\u62df\u673a \u4e3b\u9898\u5185\u5bb9 \u4ece&#8221;\u5199\u4ee3\u7801\u5230\u5e95\u9700\u8981\u4ec0\u4e48\u4e1c\u897f&#038;#822 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