{"id":92,"date":"2022-09-22T22:12:00","date_gmt":"2022-09-22T14:12:00","guid":{"rendered":"https:\/\/www.6665544.xyz\/?p=92"},"modified":"2022-09-29T22:42:24","modified_gmt":"2022-09-29T14:42:24","slug":"%e9%87%8d%e6%8d%a1java%ef%bc%8c%e7%ac%ac%e4%b8%80%e8%8a%82-%e5%90%84%e7%b1%bb%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b%e7%9a%84%e5%ae%9a%e4%b9%89","status":"publish","type":"post","link":"https:\/\/www.6665544.xyz\/?p=92","title":{"rendered":"\u91cd\u6361JAVA\uff0c\u7b2c\u4e00\u8282 \u5404\u7c7b\u6570\u636e\u7c7b\u578b\u7684\u5b9a\u4e49"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" style=\"font-size:.875rem;line-height:1.25rem\"><span style=\"display:block;padding:16px 0 0 16px;margin-bottom:-1px;width:100%;text-align:left;background-color:#2e3440ff\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"54\" height=\"14\" viewBox=\"0 0 54 14\"><g fill=\"none\" fill-rule=\"evenodd\" transform=\"translate(1 1)\"><circle cx=\"6\" cy=\"6\" r=\"6\" fill=\"#FF5F56\" stroke=\"#E0443E\" stroke-width=\".5\"><\/circle><circle cx=\"26\" cy=\"6\" r=\"6\" fill=\"#FFBD2E\" stroke=\"#DEA123\" stroke-width=\".5\"><\/circle><circle cx=\"46\" cy=\"6\" r=\"6\" fill=\"#27C93F\" stroke=\"#1AAB29\" stroke-width=\".5\"><\/circle><\/g><\/svg><\/span><span role=\"button\" tabindex=\"0\" data-code=\"package example2;\n\npublic class Ex2_1 {\n\n\tpublic static void main(String[] args) {\n\t\t\/\/ TODO Auto-generated method stub\n\t\tfinal double PI=3.14159; \/\/\u5b9a\u4e49double\u7c7b\u578b\u5e38\u91cfPI\n\t\tbyte a;\t\/\/\u5b9a\u4e49 byte\u7c7b\u578b\u53d8\u91cfa\n\t\tint b; \t\/\/\u5b9a\u4e49 int\u7c7b\u578b\u53d8\u91cfb\n\t\tchar c; \/\/\u5b9a\u4e49 char\u7c7b\u578b\u53d8\u91cfc\n\t\tdouble d =2.5; \/\/\u5b9a\u4e49double\u7c7b\u578b\u53d8\u91cfd\n\t\ta = 012; \/\/\u7ed9\u53d8\u91cfa\u8d4b\u503c \u8be5\u503c\u4e3a\u516b\u8fdb\u523612.\u5341\u8fdb\u523610\n\t\tb = 100; \/\/\u7ed9\u53d8\u91cfb\u8d4b\u503c100\n\t\tc = 'A'; \/\/\u7ed9\u53d8\u91cfc\u8d4b\u503c'A'\n\t\tSystem.out.println(&quot; PI= &quot;+PI);\n\t\tSystem.out.println(&quot; a= &quot;+a);\n\t\tSystem.out.println(&quot; b= &quot;+b);\n\t\tSystem.out.println(&quot; c= &quot;+c);\n\t\tSystem.out.println(&quot; d= &quot;+d);\n\t}\n\n}\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki\" style=\"background-color: #2e3440ff\"><code><span class=\"line\"><span style=\"color: #81A1C1\">package<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">example2<\/span><span style=\"color: #81A1C1\">;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">public<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">class<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Ex2_1<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #81A1C1\">public<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">static<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">void<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">main<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #8FBCBB\">String<\/span><span style=\"color: #ECEFF4\">[]<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">args<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">\t\t<\/span><span style=\"color: #616E88\">\/\/ TODO Auto-generated method stub<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #81A1C1\">final<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">double<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">PI<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #B48EAD\">3.14159<\/span><span style=\"color: #81A1C1\">;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #616E88\">\/\/\u5b9a\u4e49double\u7c7b\u578b\u5e38\u91cfPI<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #81A1C1\">byte<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">a<\/span><span style=\"color: #81A1C1\">;<\/span><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #616E88\">\/\/\u5b9a\u4e49 byte\u7c7b\u578b\u53d8\u91cfa<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #81A1C1\">int<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">b<\/span><span style=\"color: #81A1C1\">;<\/span><span style=\"color: #D8DEE9FF\"> \t<\/span><span style=\"color: #616E88\">\/\/\u5b9a\u4e49 int\u7c7b\u578b\u53d8\u91cfb<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #81A1C1\">char<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">c<\/span><span style=\"color: #81A1C1\">;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #616E88\">\/\/\u5b9a\u4e49 char\u7c7b\u578b\u53d8\u91cfc<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #81A1C1\">double<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">d<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #B48EAD\">2.5<\/span><span style=\"color: #81A1C1\">;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #616E88\">\/\/\u5b9a\u4e49double\u7c7b\u578b\u53d8\u91cfd<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\ta <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #B48EAD\">012<\/span><span style=\"color: #81A1C1\">;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #616E88\">\/\/\u7ed9\u53d8\u91cfa\u8d4b\u503c \u8be5\u503c\u4e3a\u516b\u8fdb\u523612.\u5341\u8fdb\u523610<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\tb <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #B48EAD\">100<\/span><span style=\"color: #81A1C1\">;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #616E88\">\/\/\u7ed9\u53d8\u91cfb\u8d4b\u503c100<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\tc <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">&#39;<\/span><span style=\"color: #A3BE8C\">A<\/span><span style=\"color: #ECEFF4\">&#39;<\/span><span style=\"color: #81A1C1\">;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #616E88\">\/\/\u7ed9\u53d8\u91cfc\u8d4b\u503c&#39;A&#39;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #D8DEE9\">System<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">out<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #88C0D0\">println<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\"> PI= <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #81A1C1\">+<\/span><span style=\"color: #D8DEE9FF\">PI<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #81A1C1\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #D8DEE9\">System<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">out<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #88C0D0\">println<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\"> a= <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #81A1C1\">+<\/span><span style=\"color: #D8DEE9FF\">a<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #81A1C1\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #D8DEE9\">System<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">out<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #88C0D0\">println<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\"> b= <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #81A1C1\">+<\/span><span style=\"color: #D8DEE9FF\">b<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #81A1C1\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #D8DEE9\">System<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">out<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #88C0D0\">println<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\"> c= <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #81A1C1\">+<\/span><span style=\"color: #D8DEE9FF\">c<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #81A1C1\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #D8DEE9\">System<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">out<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #88C0D0\">println<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\"> d= <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #81A1C1\">+<\/span><span style=\"color: #D8DEE9FF\">d<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #81A1C1\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">}<\/span><\/span><\/code><\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u91cd\u6361JAVA\uff0c\u7b2c\u4e00\u8282 \u5404\u7c7b\u6570\u636e\u7c7b\u578b\u7684\u5b9a\u4e49,\u5305\u542bint\u3001\u6d6e\u70b9\u578b\u3001\u5b57\u7b26\u53d8\u91cf\u7b49<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"emotion":"","emotion_color":"","title_style":"","license":"","footnotes":""},"categories":[26],"tags":[24],"class_list":["post-92","post","type-post","status-publish","format-standard","hentry","category-java","tag-java"],"_links":{"self":[{"href":"https:\/\/www.6665544.xyz\/index.php?rest_route=\/wp\/v2\/posts\/92","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.6665544.xyz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.6665544.xyz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.6665544.xyz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.6665544.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=92"}],"version-history":[{"count":2,"href":"https:\/\/www.6665544.xyz\/index.php?rest_route=\/wp\/v2\/posts\/92\/revisions"}],"predecessor-version":[{"id":94,"href":"https:\/\/www.6665544.xyz\/index.php?rest_route=\/wp\/v2\/posts\/92\/revisions\/94"}],"wp:attachment":[{"href":"https:\/\/www.6665544.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=92"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.6665544.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=92"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.6665544.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=92"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}