{"id":15,"date":"2021-08-11T13:07:14","date_gmt":"2021-08-11T05:07:14","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/javav2\/?p=15"},"modified":"2021-08-17T15:39:46","modified_gmt":"2021-08-17T07:39:46","slug":"java%e7%9a%84%e8%87%aa%e5%a2%9e%e8%87%aa%e5%87%8f%e8%bf%90%e7%ae%97%e7%ac%a6","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/javav2\/post-15.html","title":{"rendered":"java\u7684\u81ea\u589e\u81ea\u51cf\u8fd0\u7b97\u7b26"},"content":{"rendered":"\n<p>\u81ea\u589e\u8fd0\u7b97\u7b26++\uff0c\u81ea\u51cf\u8fd0\u7b97\u7b26&#8211;\uff0c\u5bf9\u4e00\u4e2a\u53d8\u91cf+1\u6216-1<\/p>\n\n\n\n<p>\u81ea\u589e\u8fd0\u7b97\u7b26\uff0c\u81ea\u51cf\u8fd0\u7b97\u7b26\uff0c\u4e5f\u53eb\u201d\u81ea\u64cd\u4f5c\u8fd0\u7b97\u7b26\u201c<\/p>\n\n\n\n<h2>\u81ea\u64cd\u4f5c\u6570\u636e\u7c7b\u578b<\/h2>\n\n\n\n<p>\u81ea\u589e\u8fd0\u7b97\u7b26\u4e0e\u81ea\u51cf\u8fd0\u7b97\u7b26\uff0c\u80fd\u4f5c\u7528\u4e8e\u9664\u4e86boolean\u4e4b\u5916\u7684\u6240\u6709\u57fa\u672c\u6570\u636e\u7c7b\u578b<\/p>\n\n\n\n<p>\u5728char\u7c7b\u578b\u4f7f\u7528\u65f6\uff0c\u5728\u8ba1\u7b97\u8fc7\u7a0b\u4e2d\u4f1a\u5148\u8f6c\u6362\u4e3a\u5bf9\u5e94\u7684ASCII\uff0c\u7136\u540e\u81ea\u589e\u6216\u81ea\u51cf\uff0c\u7136\u540e\u7ed3\u679c\u518d\u6362\u56de\u5b57\u7b26\u3002\u4f8b\u5982\u4ee5\u4e0b\u4f8b\u5b50\uff0c\u8bc1\u660echar\u80fd\u4f7f\u7528\u81ea\u589e\u81ea\u51cf\u8fd0\u7b97\u7b26<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>        char a = 'c';\n        System.out.println(a++);    \/\/ d\n        System.out.println(a--);    \/\/ c<\/code><\/pre>\n\n\n\n<h2>\u5148\u81ea\u589e\u4e0e\u540e\u81ea\u589e<\/h2>\n\n\n\n<p>\u4ee5\u81ea\u589e\u8fd0\u7b97\u7b26\u4e3a\u4f8b\uff0c\u5148\u81ea\u589e\u4e0e\u540e\u81ea\u589e\u5728\u8868\u8fbe\u5f0f\u4e2d\u6709\u4e0d\u540c\u7684\u7ed3\u679c<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>        int a = 10;\n        int b = 10;\n        int c = ++a;\n        int d = b++;\n        System.out.println(c);  \/\/ 11\n        System.out.println(d);  \/\/ 10<\/code><\/pre>\n\n\n\n<p>\u5728\u81ea\u64cd\u4f5c\u4e2d\uff0c\u5b9e\u9645\u4f1a\u88ab\u89e3\u91ca\u4e3a2\u4e2a\u8bed\u53e5\uff0cc=++a\u548cd=b++\u5b9e\u9645\u88ab\u89e3\u91ca\u4e3a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a = a+1;  \/\/ a=11\nc = a;    \/\/ c=11\n\nd = b;   \/\/ d=10\nb = b+1;  \/\/ b=11<\/code><\/pre>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u662f\u56e0\u4e3a\u81ea\u589e\u8fd0\u7b97\u7b26\u7684\u5b9e\u9645\u6267\u884c\u7684\u987a\u5e8f\u4e0d\u540c\uff0c\u5bfc\u81f4\u8868\u8fbe\u5f0f\u7ed3\u679c\u4e0d\u540c\u3002<\/p>\n\n\n\n<h2>\u81ea\u589e\u8fd0\u7b97\u7b26\u4f18\u5148\u7ea7<\/h2>\n\n\n\n<p>\u81ea\u589e\u8fd0\u7b97\u7b26\uff0c\u662f\u5355\u64cd\u4f5c\u6570\u8fd0\u7b97\u7b26\uff0c\u5b83\u7684\u4f18\u5148\u7ea7\u6700\u9ad8<\/p>\n\n\n\n<p>\u76f8\u5bf9\u6bd4+\uff0c-\u7b49\u4e8c\u5143\u64cd\u4f5c\u6570\u8fd0\u7b97\u7b26\uff0c\u4f1a\u5148\u6267\u884c\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>        int a = 10;\n        int b = ++a + a++ + a - --a - a--;\n        \/\/  12     11 + 11  + 12 - 11 - 11\n        System.out.println(a);  \/\/ 10\n        System.out.println(b);  \/\/ 12<\/code><\/pre>\n\n\n\n<p>\u5728java\u7684\u8868\u8fbe\u5f0f\u4e2d\uff0c\u7b97\u672f\u8868\u8fbe\u5f0f\u662f\u4ece\u5de6\u5230\u53f3\u6267\u884c\u7684\uff0c\u4e0a\u9762\u7684\u4f8b\u5b50\u5c31\u53ef\u4ee5\u9a8c\u8bc1<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>        int a = 10;\n        int b = ++a + a++ + a - --a - a--;\n        \/\/  12   11 + 11  + 12 - 11 - 11  \u4ece\u5de6\u5230\u53f3\n        \/\/  8     10 +  8   +8  - 8-  10  \u4ece\u53f3\u5230\u5de6          \n        System.out.println(a);  \/\/ 10\n        System.out.println(b);  \/\/ 12<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u81ea\u589e\u8fd0\u7b97\u7b26++\uff0c\u81ea\u51cf\u8fd0\u7b97\u7b26&#8211;\uff0c\u5bf9\u4e00\u4e2a\u53d8\u91cf+1\u6216-1 \u81ea\u589e\u8fd0\u7b97\u7b26\uff0c\u81ea\u51cf\u8fd0\u7b97\u7b26\uff0c\u4e5f\u53eb\u201d\u81ea\u64cd\u4f5c\u8fd0\u7b97\u7b26\u201c &hellip; <a href=\"https:\/\/www.52dixiaowo.com\/javav2\/post-15.html\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">java\u7684\u81ea\u589e\u81ea\u51cf\u8fd0\u7b97\u7b26<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts\/15"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/comments?post=15"}],"version-history":[{"count":0,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts\/15\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/media?parent=15"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/categories?post=15"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/tags?post=15"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}