{"id":92,"date":"2017-02-07T11:45:00","date_gmt":"2017-02-07T03:45:00","guid":{"rendered":"http:\/\/cn1.club\/?p=92"},"modified":"2025-03-13T20:14:56","modified_gmt":"2025-03-13T12:14:56","slug":"day2-%e7%ac%94%e8%ae%b0-%e5%b8%b8%e9%87%8f%e7%9a%84%e6%a6%82%e8%bf%b0%e5%92%8c%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/cn1.club\/?p=92","title":{"rendered":"Day2 \u7b14\u8bb0 \u5e38\u91cf\u7684\u6982\u8ff0\u548c\u4f7f\u7528!"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >class Demo1_Constant { \/\/constant \u5e38\u91cf&lt;br&gt;public static void main(String&#091;] args) {<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >    \/*\n    \u5b57\u7b26\u4e32\u5e38\u91cf      \u7528\u53cc\u5f15\u53f7\u62ec\u8d77\u6765\u7684\u5185\u5bb9\n    \u6574\u6570\u5e38\u91cf        \u6240\u6709\u6574\u6570\n    \u5c0f\u6570\u5e38\u91cf        \u6240\u6709\u5c0f\u6570\n    \u5b57\u7b26\u5e38\u91cf        \u7528\u5355\u5f15\u53f7\u62ec\u8d77\u6765\u7684\u5185\u5bb9,\u91cc\u9762\u53ea\u80fd\u653e\u5355\u4e2a\u6570\u5b57,\u5355\u4e2a\u5b57\u6bcd\u6216\u5355\u4e2a\u7b26\u53f7\n    \u5e03\u5c14\u5e38\u91cf        \u8f83\u4e3a\u7279\u6b8a\uff0c\u53ea\u6709true\u548cfalse\n    \u7a7a\u5e38\u91cf        null(\u6570\u7ec4\u90e8\u5206\u8bb2\u89e3)\n    *\/\n\n    System.out.println(&quot;abc&quot;);      \/\/\u5b57\u7b26\u4e32\u5e38\u91cf\n    System.out.println(234);        \/\/\u6574\u6570\u5e38\u91cf\n    System.out.println(12.32);      \/\/\u5c0f\u6570\u5e38\u91cf\n    \/\/System.out.println(&#039;10&#039;);     \/\/&#039;&#039;\u4e2d\u5fc5\u987b\u653e\u7684\u662f\u5355\u4e2a\u5b57\u7b26,10\u4ee3\u8868\u7684\u662f1\u5b57\u7b26\u548c0\u5b57\u7b26\n    \/\/System.out.println(&#039;&#039;);       \/\/&#039;&#039;\u4e2d\u4ec0\u4e48\u4e5f\u4e0d\u653e,\u4e5f\u662f\u4e0d\u53ef\u4ee5\u7684,\u56e0\u4e3a\u4ee3\u8868\u4e0d\u4e86\u4efb\u4f55\u5b57\u7b26\n    System.out.println(&#039; &#039;);        \/\/\u5e26\u8868\u7a7a\u683c\u5b57\u7b26\n    System.out.println(true);       \/\/boolean\u7c7b\u53ea\u6709\u4e24\u4e2a\u503c,true\u548cfalse\n    System.out.println(false);\n}<\/code><\/pre>\n\n\n\n<p>}<br>\u4ee5\u4e0a\u4e3aEditPlus\u4e2d\u7684\u4ee3\u7801<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >class Demo1_Constant { \/\/constant \u5e38\u91cf&lt;br&gt;public static void main(String&#091;] args) {<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >\/*&lt;br&gt;\u5b57\u7b26\u4e32\u5e38\u91cf \u7528\u53cc\u5f15\u53f7\u62ec\u8d77\u6765\u7684\u5185\u5bb9&lt;br&gt;\u6574\u6570\u5e38\u91cf \u6240\u6709\u6574\u6570&lt;br&gt;\u5c0f\u6570\u5e38\u91cf \u6240\u6709\u5c0f\u6570&lt;br&gt;\u5b57\u7b26\u5e38\u91cf \u7528\u5355\u5f15\u53f7\u62ec\u8d77\u6765\u7684\u5185\u5bb9,\u91cc\u9762\u53ea\u80fd\u653e\u5355\u4e2a\u6570\u5b57,\u5355\u4e2a\u5b57\u6bcd\u6216\u5355\u4e2a\u7b26\u53f7&lt;br&gt;\u5e03\u5c14\u5e38\u91cf \u8f83\u4e3a\u7279\u6b8a\uff0c\u53ea\u6709true\u548cfalse&lt;br&gt;\u7a7a\u5e38\u91cf null(\u6570\u7ec4\u90e8\u5206\u8bb2\u89e3)&lt;br&gt;*\/<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >System.out.println(&quot;abc&quot;); \/\/\u5b57\u7b26\u4e32\u5e38\u91cf&lt;br&gt;System.out.println(234); \/\/\u6574\u6570\u5e38\u91cf&lt;br&gt;System.out.println(12.32); \/\/\u5c0f\u6570\u5e38\u91cf&lt;br&gt;\/\/System.out.println(&#039;10&#039;); \/\/&#039;&#039;\u4e2d\u5fc5\u987b\u653e\u7684\u662f\u5355\u4e2a\u5b57\u7b26,10\u4ee3\u8868\u7684\u662f1\u5b57\u7b26\u548c0\u5b57\u7b26&lt;br&gt;\/\/System.out.println(&#039;&#039;); \/\/&#039;&#039;\u4e2d\u4ec0\u4e48\u4e5f\u4e0d\u653e,\u4e5f\u662f\u4e0d\u53ef\u4ee5\u7684,\u56e0\u4e3a\u4ee3\u8868\u4e0d\u4e86\u4efb\u4f55\u5b57\u7b26&lt;br&gt;System.out.println(&#039; &#039;); \/\/\u5e26\u8868\u7a7a\u683c\u5b57\u7b26&lt;br&gt;System.out.println(true); \/\/boolean\u7c7b\u53ea\u6709\u4e24\u4e2a\u503c,true\u548cfalse&lt;br&gt;System.out.println(false);&lt;br&gt;}&lt;br&gt;}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>}\u4ee5\u4e0a\u4e3aEditPlus\u4e2d\u7684\u4ee3\u7801<\/p>\n","protected":false},"author":1,"featured_media":196,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[],"class_list":["post-92","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-xuexi"],"_links":{"self":[{"href":"https:\/\/cn1.club\/index.php?rest_route=\/wp\/v2\/posts\/92","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn1.club\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn1.club\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn1.club\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cn1.club\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=92"}],"version-history":[{"count":0,"href":"https:\/\/cn1.club\/index.php?rest_route=\/wp\/v2\/posts\/92\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn1.club\/index.php?rest_route=\/wp\/v2\/media\/196"}],"wp:attachment":[{"href":"https:\/\/cn1.club\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=92"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn1.club\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=92"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn1.club\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=92"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}