{"id":31289,"date":"2024-01-11T05:42:55","date_gmt":"2024-01-18T17:53:21","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90%e5%a2%9e%e5%8a%a0%e5%92%8c%e5%87%8f%e5%b0%91%e3%80%91java\/"},"modified":"2025-08-12T23:16:08","modified_gmt":"2025-08-12T15:16:08","slug":"%e3%80%90%e5%a2%9e%e5%8a%a0%e5%92%8c%e5%87%8f%e5%b0%91%e3%80%91java","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90%e5%a2%9e%e5%8a%a0%e5%92%8c%e5%87%8f%e5%b0%91%e3%80%91java\/","title":{"rendered":"\u3010\u589e\u52a0\u548c\u51cf\u5c11\u3011Java"},"content":{"rendered":"<h2>&#8220;\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u30fb\u30c7\u30af\u30ea\u30e1\u30f3\u30c8&#8221; \u662f\u4ec0\u4e48\u610f\u601d\uff1f<\/p>\n<h4>\u662f\u4e00\u79cd\u8fd0\u7b97\u7b26\uff0c\u53ef\u4ee5\u5bf9\u6570\u503c\u7c7b\u578b\u7684\u53d8\u91cf\u8fdb\u884c\u52a01\u6216\u51cf1\u7684\u64cd\u4f5c\u3002<\/p>\n<h4>\u7136\u800c\uff0c\u4f7f\u7528\u8fd0\u7b97\u7b26&#8217;++&#8217;\u548c&#8217;&#8211;&#8216;\u65f6\uff0c\u6839\u636e\u53d8\u91cf\u7684\u300c\u653e\u7f6e\u4f4d\u7f6e\u300d\uff0c\u52a0\u51cf\u8ba1\u7b97\u7684\u65f6\u673a\u4f1a\u6709\u6240\u4e0d\u540c\u3002\u603b\u7684\u6765\u8bf4\uff0c\u5c31\u662f\u4ee5\u4e0a\u7684\u89e3\u91ca\uff0c\u4f46\u4ec5\u4ec5\u4f9d\u9760\u8fd9\u4e9b\u8fd8\u65e0\u6cd5\u7406\u89e3\uff0c\u6240\u4ee5\u6211\u4eec\u5148\u6765\u5c1d\u8bd5\u89e3\u51b3\u95ee\u9898\u5427\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n\t\t<span class=\"kt\">int<\/span> <span class=\"n\">a<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">10<\/span><span class=\"o\">;<\/span>\r\n\t\t<span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(++<\/span><span class=\"n\">a<\/span> <span class=\"o\">+<\/span> <span class=\"n\">a<\/span><span class=\"o\">++<\/span> <span class=\"o\">+<\/span> <span class=\"n\">a<\/span> <span class=\"o\">+<\/span> <span class=\"n\">a<\/span><span class=\"o\">--<\/span> <span class=\"o\">+<\/span> <span class=\"o\">--<\/span><span class=\"n\">a<\/span><span class=\"o\">);<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u8bf7\u95ee\u600e\u4e48\u6837\u5462\uff1f<\/p>\n<p>\u6211\u8ba4\u4e3a\u80fd\u591f\u8fc5\u901f\u89e3\u51b3\u7684\u4eba\u5df2\u7ecf\u62e5\u6709\u8db3\u591f\u7684\u77e5\u8bc6\u4e86\u3002<\/p>\n<p>\u5982\u679c\u4f60\u6709\u4e00\u70b9\u72b9\u8c6b\uff0c\u8bf7\u53c2\u8003\u4ee5\u4e0b\u7684\u89e3\u91ca\u3002<\/p>\n<p>\u8bf7\u5c06\u4ee5\u4e0b\u5185\u5bb9\u7528\u4e2d\u6587\u8fdb\u884c\u540c\u4e49\u8f6c\u8ff0\uff1a<br \/>\n\u2193<br \/>\n\u2193<br \/>\n\u2193<\/p>\n<pre class=\"post-pre\"><code><span class=\"mi\">56<\/span>\r\n<\/code><\/pre>\n<p>\u8fd8\u6709\u4e00\u4e2a\u95ee\u9898<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n\t\t<span class=\"kt\">int<\/span> <span class=\"n\">a<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">10<\/span><span class=\"o\">;<\/span>\r\n\t\t<span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">a<\/span><span class=\"o\">++<\/span> <span class=\"o\">&gt;<\/span> <span class=\"mi\">10<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"o\">++<\/span><span class=\"n\">a<\/span> <span class=\"o\">&lt;<\/span> <span class=\"mi\">10<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n\t\t\t<span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u305f\u3002a\u306e\u5024\u306f\"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">a<\/span><span class=\"o\">);<\/span>\r\n\t\t<span class=\"o\">}<\/span>\r\n\t\t<span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u306a\u3044\u3002a\u306e\u5024\u306f\"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">a<\/span><span class=\"o\">);<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u8bf7\u5c06\u4ee5\u4e0b\u5185\u5bb9\u7528\u4e2d\u6587\u8fdb\u884c\u91ca\u4e49\uff0c\u53ea\u9700\u8981\u63d0\u4f9b\u4e00\u79cd\u9009\u9879:<br \/>\n\u2193<br \/>\n\u2193<br \/>\n\u2193<\/p>\n<pre class=\"post-pre\"><code><span class=\"s\">\"\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u306a\u3044\u3002a\u306e\u5024\u306f12\"<\/span><span class=\"c1\">\/\/a = 12<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u662f\u521d\u5b66Java\u7684\u4eba\uff0c\u53ef\u80fd\u4f1a\u611f\u5230\u6709\u70b9\u56f0\u60d1\u3002\u8fd9\u4e2a\u95ee\u9898\u9996\u5148\u662f\u56e0\u4e3a\u6ca1\u6709\u7406\u89e3\u6761\u4ef6\u8bed\u53e5\uff0c\u800c\u4e14\u8fd8\u4e0d\u80fd\u6b63\u786e\u5224\u65ad\u9012\u589e\u548c\u9012\u51cf\u3002<\/p>\n<h4>\u9610\u8ff0<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n\t\t<span class=\"kt\">int<\/span> <span class=\"n\">a<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">10<\/span><span class=\"o\">;<\/span>\r\n\t\t<span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(++<\/span><span class=\"n\">a<\/span> <span class=\"o\">+<\/span> <span class=\"n\">a<\/span><span class=\"o\">++<\/span> <span class=\"o\">+<\/span> <span class=\"n\">a<\/span> <span class=\"o\">+<\/span> <span class=\"n\">a<\/span><span class=\"o\">--<\/span> <span class=\"o\">+<\/span> <span class=\"o\">--<\/span><span class=\"n\">a<\/span><span class=\"o\">);<\/span>\r\n             <span class=\"c1\">\/\/ a\u306e\u52d5\u304d \u21e8     11 + 11 + 12 + 12 + 10<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u53d8\u91cf\u524d\u9762\u6709\u589e\u91cf\u7684\u8bdd\uff1a\u5148\u52a0\u4e0a\u53bb\u8ba1\u7b97\uff0c<br \/>\na = 10 \u21d2 a = 10 + 1\uff08\u9009\u62e9\u8fd9\u4e2a\uff09<\/p>\n<p>\u5982\u679c\u53d8\u91cf\u540e\u9762\u6709\u589e\u91cf\u7684\u8bdd\uff1a\u540e\u52a0\u4e0a\u53bb\u8ba1\u7b97\uff0c<br \/>\na = 10\uff08\u9009\u62e9\u8fd9\u4e2a\uff09\u21d2 a = 10 + 1<\/p>\n<p>\u5982\u679c\u53d8\u91cf\u524d\u9762\u6709\u51cf\u91cf\u7684\u8bdd\uff1a\u5148\u51cf\u53bb\u518d\u8ba1\u7b97\uff0c<br \/>\na = 10 \u21d2 a = 10 &#8211; 1\uff08\u9009\u62e9\u8fd9\u4e2a\uff09<\/p>\n<p>\u5982\u679c\u53d8\u91cf\u540e\u9762\u6709\u51cf\u91cf\u7684\u8bdd\uff1a\u540e\u51cf\u53bb\u518d\u8ba1\u7b97\uff0c<br \/>\na = 10\uff08\u9009\u62e9\u8fd9\u4e2a\uff09\u21d2 a = 10 &#8211; 1<\/p>\n<pre class=\"post-pre\"><code>\t<span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">a<\/span><span class=\"o\">++<\/span> <span class=\"o\">&gt;<\/span> <span class=\"mi\">10<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"o\">++<\/span><span class=\"n\">a<\/span> <span class=\"o\">&lt;<\/span> <span class=\"mi\">10<\/span><span class=\"o\">)<\/span>\r\n<\/code><\/pre>\n<p>\u5173\u4e8e\u8fd9\u4e2a\u95ee\u9898\uff0c\u6709\u4e24\u4e2a\u8981\u70b9\u3002<br \/>\n1. \u7406\u89e3\u901a\u8fc7&#8217; &amp;&amp; &#8216;\u8fde\u63a5\u7684\u4e24\u4e2a\u6761\u4ef6\u5224\u65ad\u5f0f<br \/>\n2. \u7406\u89e3\u9012\u589e\u9012\u51cf\u8fd0\u7b97<\/p>\n<p>\u5982\u679c\u4f7f\u7528&#8221;&amp;&amp;&#8221;\u8fde\u63a5\u7684\u6761\u4ef6\uff0c\u5f53\u4e24\u4e2a\u6761\u4ef6\u90fd\u4e3atrue\u65f6\uff0c\u624d\u4f1a\u6267\u884c&#8221;{}&#8221;\u4e2d\u7684\u90e8\u5206\u3002\u5e76\u4e14\uff0c\u5982\u679c\u7b2c\u4e00\u4e2a\u6761\u4ef6\u4e3afalse\uff0c\u5219\u4e0d\u4f1a\u5224\u65ad\u7b2c\u4e8c\u4e2a\u6761\u4ef6\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u82e5 a++ &gt; 10 \u7684\u5224\u65ad\u7ed3\u679c\u4e3afalse\uff0c\u90a3\u4e48++a &lt; 10 \u7684\u5224\u65ad\u4e5f\u5c06\u4e0d\u518d\u8fdb\u884c\u3002<\/p>\n<p>\u5de6\u8fb9\u7684\u6761\u4ef6\u5f0f\uff1afalse<br \/>\n\u53f3\u8fb9\u7684\u6761\u4ef6\u5f0f\uff1atrue\uff08\u672a\u88ab\u5224\u65ad\uff09<br \/>\n\u5de6\u8fb9\u7684\u6761\u4ef6\u5f0f a++ \u5c06\u88ab\u5224\u65ad\uff0c\u56e0\u6b64 a \u4f1a\u589e\u52a0 1\u3002\u4f46\u5728\u8fdb\u884c\u6761\u4ef6\u5224\u65ad\u65f6\u9700\u8981\u6ce8\u610f a = 10\u3002a++ \u5c06\u628a\u9012\u589e\u7b26\u653e\u5728\u53d8\u91cf\u540e\u9762\u3002\u56e0\u6b64\uff0c\u5728\u6761\u4ef6\u5224\u65ad\u65f6\u5c06\u4f7f\u7528 a = 10 \u8fdb\u884c\u5224\u5b9a\u3002<br \/>\n&#8211;\u7ed3\u679c&#8211;<br \/>\n\u5728\u6761\u4ef6\u5224\u65ad\u65f6\u5c06\u4f7f\u7528 a = 10 \u8fdb\u884c\u5224\u5b9a<br \/>\n\u5728\u5224\u65ad\u4e4b\u540e\u7684\u884c\u4e2d\uff0ca \u7684\u503c\u5c06\u53d8\u4e3a 11<\/p>\n<p>\u6700\u540e\u6211\u4eec\u6765\u786e\u8ba4\u4e00\u4e0b\u7b80\u5355\u7684\u52a8\u4f5c\u3002<\/p>\n<pre class=\"post-pre\"><code>    <span class=\"kt\">int<\/span> <span class=\"n\">a<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">10<\/span><span class=\"o\">;<\/span>\r\n    <span class=\"kt\">boolean<\/span> <span class=\"n\">bool<\/span> <span class=\"o\">=<\/span> <span class=\"o\">(<\/span><span class=\"n\">a<\/span><span class=\"o\">++<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">10<\/span><span class=\"o\">)<\/span>\r\n    <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">bool<\/span><span class=\"o\">);<\/span><span class=\"c1\">\/\/true<\/span>\r\n    <span class=\"kt\">int<\/span> <span class=\"n\">b<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">10<\/span><span class=\"o\">;<\/span>\r\n    <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(++<\/span><span class=\"n\">b<\/span> <span class=\"o\">+<\/span> <span class=\"o\">--<\/span><span class=\"n\">b<\/span><span class=\"o\">);<\/span><span class=\"c1\">\/\/21\u3068\u51fa\u529b\u3055\u308c\u308b<\/span>\r\n    <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">b<\/span><span class=\"o\">);<\/span><span class=\"c1\">\/\/10\u3068\u51fa\u529b\u3055\u308c\u308b<\/span>\r\n<\/code><\/pre>\n<p>\u589e\u52a0\u548c\u51cf\u5c11\u8fd0\u7b97\u662f\u5728\u5f00\u59cb\u5b66\u4e60Java\u65f6\u770b\u8d77\u6765\u5f88\u7b80\u5355\u7684\u4e1c\u897f\uff0c\u4f46\u5982\u679c\u6ca1\u6709\u6df1\u5165\u7406\u89e3\u7684\u8bdd\uff0c\u53ef\u80fd\u65e0\u6cd5\u6b63\u786e\u5224\u65ad\u6216\u51fa\u73b0\u8f93\u51fa\u4e0e\u9884\u671f\u4e0d\u7b26\u7684\u60c5\u51b5\u3002\u5728\u7ee7\u7eed\u5b66\u4e60\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u5e0c\u671b\u80fd\u591f\u6709\u610f\u8bc6\u5730\u52a0\u5f3a\u57fa\u7840\u3002<\/p>\n<h6>\u6dfb\u52a0\u5907\u6ce8<\/p>\n<pre class=\"post-pre\"><code><span class=\"o\">++<\/span><span class=\"n\">\u3068\u306f<\/span>\r\n<span class=\"kt\">int<\/span> <span class=\"n\">a<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">10<\/span><span class=\"o\">;<\/span>\r\n<span class=\"o\">++<\/span><span class=\"n\">a<\/span><span class=\"o\">;<\/span>\r\n<span class=\"c1\">\/\/a = a + 1;<\/span>\r\n\r\n<span class=\"c1\">\/\/\u6f14\u7b97\u5b50\u306e\u4e00\u7a2e<\/span>\r\n<span class=\"n\">a<\/span> <span class=\"o\">+=<\/span> <span class=\"mi\">1<\/span><span class=\"o\">;<\/span><span class=\"c1\">\/\/+= -= *= \/=<\/span>\r\n\r\n<span class=\"kt\">int<\/span> <span class=\"n\">b<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">10<\/span><span class=\"o\">;<\/span>\r\n<span class=\"k\">if<\/span> <span class=\"o\">(++<\/span><span class=\"n\">b<\/span> <span class=\"o\">==<\/span> <span class=\"mi\">10<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"true\"<\/span><span class=\"o\">);<\/span>\r\n<span class=\"o\">}<\/span> <span class=\"k\">else<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"false\"<\/span><span class=\"o\">);<\/span>\r\n<span class=\"o\">}<\/span>\r\n<span class=\"c1\">\/\/\u7d50\u679c\u306ffalse<\/span>\r\n<span class=\"kt\">int<\/span> <span class=\"n\">c<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">10<\/span><span class=\"o\">;<\/span>\r\n<span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">c<\/span><span class=\"o\">++<\/span> <span class=\"o\">==<\/span> <span class=\"mi\">10<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"true\"<\/span><span class=\"o\">);<\/span>\r\n<span class=\"o\">}<\/span> <span class=\"k\">else<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"false\"<\/span><span class=\"o\">);<\/span>\r\n<span class=\"o\">}<\/span>\r\n<span class=\"c1\">\/\/\u7d50\u679c\u306ftrue   c = 11<\/span>\r\n\r\n\r\n<span class=\"o\">++<\/span><span class=\"n\">a<\/span>\r\n<span class=\"c1\">\/\/\u5148\u306b + 1 \u3092\u3059\u308b<\/span>\r\n<span class=\"n\">a<\/span><span class=\"o\">++<\/span>\r\n<span class=\"c1\">\/\/\u5f8c\u306b + 1 \u3092\u3059\u308b<\/span>\r\n<span class=\"o\">--<\/span><span class=\"n\">a<\/span>\r\n<span class=\"c1\">\/\/\u5148\u306b - 1 \u3092\u3059\u308b<\/span>\r\n<span class=\"n\">a<\/span><span class=\"o\">--<\/span>\r\n<span class=\"c1\">\/\/\u5f8c\u306b - 1 \u3092\u3059\u308b<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u30fb\u30c7\u30af\u30ea\u30e1\u30f3\u30c8&#8221; \u662f\u4ec0\u4e48\u610f\u601d\uff1f \u662f\u4e00\u79cd\u8fd0\u7b97\u7b26\uff0c\u53ef\u4ee5\u5bf9\u6570\u503c\u7c7b\u578b\u7684\u53d8\u91cf\u8fdb\u884c [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31289","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u3010\u589e\u52a0\u548c\u51cf\u5c11\u3011Java - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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