{"id":538,"date":"2023-09-26T02:52:57","date_gmt":"2024-01-10T03:39:36","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/java%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%95%b0%e7%bb%84\/"},"modified":"2025-08-02T16:38:01","modified_gmt":"2025-08-02T08:38:01","slug":"java%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%95%b0%e7%bb%84\/","title":{"rendered":"\u6df1\u5165\u7406\u89e3Java\u5b57\u7b26\u4e32\u6570\u7ec4\uff1a\u521b\u5efa\u3001\u64cd\u4f5c\u4e0e\u6700\u4f73\u5b9e\u8df5"},"content":{"rendered":"<p>\u8fd9\u662f\u6587\u7ae0\u300aJava\u5b57\u7b26\u4e32\u6570\u7ec4\u300b\u7684\u7b2c1\u90e8\u5206\uff08\u51711\u90e8\u5206\uff09\u3002<\/p>\n<p>\u5185\u5bb9\u7247\u6bb5: Java\u5b57\u7b26\u4e32\u6570\u7ec4\u7528\u4e8e\u5b58\u50a8\u56fa\u5b9a\u6570\u91cf\u7684\u5b57\u7b26\u4e32\u3002\u5b57\u7b26\u4e32\u6570\u7ec4\u5728\u7b80\u5355\u7684Java\u7a0b\u5e8f\u4e2d\u975e\u5e38\u5e38\u89c1\uff0c\u7279\u522b\u662f\u5728\u521d\u5b66\u8005\u4f7f\u7528Java\u5e76\u6d4b\u8bd5\u4e00\u4e9b\u7279\u5b9a\u60c5\u666f\u7684\u65f6\u5019\u3002\u751a\u81f3Java\u7684\u4e3b\u65b9\u6cd5\u53c2\u6570\u4e5f\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4 &#8211; public static void main(String[] args)\u3002\u56e0\u6b64\uff0c\u4eca\u5929\u6211\u4eec\u5c06\u901a\u8fc7\u793a\u4f8b\u7a0b\u5e8f\u6765\u4e86\u89e3Java\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u4e0d\u540c\u65b9\u9762\u3002<\/p>\n<ul class=\"post-ul\">\n<li>Java\u5b57\u7b26\u4e32\u6570\u7ec4\u57fa\u672c\u4e0a\u662f\u4e00\u4e2a\u5bf9\u8c61\u6570\u7ec4\u3002<\/li>\n<li>\u58f0\u660e\u5b57\u7b26\u4e32\u6570\u7ec4\u6709\u4e24\u79cd\u65b9\u5f0f &#8211; \u4e0d\u6307\u5b9a\u5927\u5c0f\u7684\u58f0\u660e\u548c\u6307\u5b9a\u5927\u5c0f\u7684\u58f0\u660e\u3002<\/li>\n<li>\u521d\u59cb\u5316\u5b57\u7b26\u4e32\u6570\u7ec4\u6709\u4e24\u79cd\u65b9\u5f0f &#8211; \u5728\u58f0\u660e\u65f6\u521d\u59cb\u5316\u548c\u5728\u58f0\u660e\u540e\u586b\u5145\u503c\u3002<\/li>\n<li>\u6211\u4eec\u53ef\u4ee5\u5bf9\u5b57\u7b26\u4e32\u6570\u7ec4\u8fdb\u884c\u4e0d\u540c\u7c7b\u578b\u7684\u5904\u7406\uff0c\u5982\u8fed\u4ee3\u3001\u6392\u5e8f\u3001\u641c\u7d22\u7b49\u3002<\/li>\n<\/ul>\n<p>\u8ba9\u6211\u4eec\u73b0\u5728\u6765\u770b\u4e00\u4e0bJava\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u793a\u4f8b\u7a0b\u5e8f\u3002<\/p>\n<h3>Java\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u58f0\u660e<\/h3>\n<p>\u5728Java\u4e2d\uff0c\u4e0b\u9762\u7684\u4ee3\u7801\u7247\u6bb5\u5c55\u793a\u4e86\u5b57\u7b26\u4e32\u6570\u7ec4\u58f0\u660e\u7684\u4e0d\u540c\u65b9\u5f0f\u3002<\/p>\n<pre class=\"post-pre\"><code>String[] strArray; \/\/\u4e0d\u6307\u5b9a\u5927\u5c0f\u58f0\u660e\r\n\r\nString[] strArray1 = new String[3]; \/\/\u6307\u5b9a\u5927\u5c0f\u58f0\u660e\r\n<\/code><\/pre>\n<p>\u8bf7\u6ce8\u610f\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u5c06\u5b57\u7b26\u4e32\u6570\u7ec4\u5199\u4e3aString strArray[]\uff0c\u4f46\u4e0a\u9762\u7684\u65b9\u5f0f\u662f\u6807\u51c6\u548c\u63a8\u8350\u7684\u65b9\u5f0f\u3002\u53e6\u5916\uff0c\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0cstrArray\u662fnull\uff0c\u800cstrArray1\u7684\u503c\u662f[null, null, null]\u3002<\/p>\n<h3>Java \u5b57\u7b26\u4e32\u6570\u7ec4\u521d\u59cb\u5316<\/h3>\n<p>Java\u4e2d\u7684\u5b57\u7b26\u4e32\u6570\u7ec4\u521d\u59cb\u5316\u65b9\u5f0f<\/p>\n<p>\u8ba9\u6211\u4eec\u6765\u770b\u770b\u5728Java\u4e2d\u521d\u59cb\u5316\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u4e0d\u540c\u65b9\u5f0f\u3002<\/p>\n<pre class=\"post-pre\"><code>\/\/\u5185\u8054\u521d\u59cb\u5316\r\nString[] strArray1 = new String[] {\"A\",\"B\",\"C\"};\r\nString[] strArray2 = {\"A\",\"B\",\"C\"}; \r\n\r\n\/\/\u58f0\u660e\u540e\u521d\u59cb\u5316\r\nString[] strArray3 = new String[3];\r\nstrArray3[0] = \"A\";\r\nstrArray3[1] = \"B\";\r\nstrArray3[2] = \"C\";\r\n<\/code><\/pre>\n<p>\u6240\u6709\u4e09\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u503c\u90fd\u662f\u76f8\u540c\u7684\u3002\u7136\u800c\uff0c\u5982\u679c\u60a8\u5728\u5b83\u4eec\u4e0a\u8c03\u7528equals\u65b9\u6cd5\uff0c\u5b83\u5c06\u8fd4\u56defalse\u3002<\/p>\n<pre class=\"post-pre\"><code>System.out.println(strArray1.equals(strArray2)); \/\/ false\r\nSystem.out.println(Arrays.toString(strArray1).equals(Arrays.toString(strArray2)));\/\/ true\r\n<\/code><\/pre>\n<p>\u539f\u56e0\u662f\u6570\u7ec4\u662f\u5bf9\u8c61\uff0c\u800c\u5bf9\u8c61\u7c7b\u5b9e\u73b0\u4e86\u4ee5\u4e0b\u7684equals()\u65b9\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code>public boolean equals(Object obj) {\r\n        return (this == obj);\r\n    }\r\n<\/code><\/pre>\n<p>\u7b2c\u4e8c\u4e2a\u9648\u8ff0\u662f\u6b63\u786e\u7684\uff0c\u56e0\u4e3a\u5f53\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u65f6\uff0c\u5b83\u4eec\u7684\u503c\u662f\u76f8\u540c\u7684\uff0c\u800cString\u7c7b\u7684equals()\u65b9\u6cd5\u5b9e\u73b0\u4f1a\u68c0\u67e5\u503c\u3002\u5982\u9700\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605String\u7c7b\u7684API\u6587\u6863\u3002<\/p>\n<h3>\u904d\u5386Java\u5b57\u7b26\u4e32\u6570\u7ec4<\/h3>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528java\u7684for\u5faa\u73af\u6216\u8005java\u7684foreach\u5faa\u73af\u6765\u904d\u5386\u5b57\u7b26\u4e32\u6570\u7ec4\u3002<\/p>\n<pre class=\"post-pre\"><code>String[] strArray2 = {\"A\",\"B\",\"C\"}; \r\nfor (int i = 0; i &lt; strArray2.length; i++) {\r\n\tSystem.out.print(strArray2[i]);\r\n}\r\n\r\nfor (String str : strArray2) {\r\n\tSystem.out.print(str);\r\n}\r\n<\/code><\/pre>\n<h3>\u5728\u5b57\u7b26\u4e32\u6570\u7ec4\u4e2d\u67e5\u627e\u4e00\u4e2a\u5b57\u7b26\u4e32\u3002<\/h3>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528for\u5faa\u73af\u5728\u6570\u7ec4\u4e2d\u641c\u7d22\u5b57\u7b26\u4e32\uff0c\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.stringarray;\r\n\r\npublic class JavaStringArrayExample {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tString[] strArray = { \"A\", \"B\", \"C\" };\r\n\t\t\r\n\t\tboolean found = false;\r\n\t\tint index = 0;\r\n\t\tString s = \"B\";\r\n\t\tfor (int i = 0; i &lt; strArray.length; i++) {\r\n\t\t\tif(s.equals(strArray[i])) {\r\n\t\t\t\tindex = i; found = true; break;\r\n\t\t\t}\r\n\t\t}\r\n\t\tif(found)\r\n\t\t\tSystem.out.println(s +\" \u5728\u7d22\u5f15 \"+index+\" \u5904\u627e\u5230\");\r\n\t\telse\r\n\t\t\tSystem.out.println(s +\" \u5728\u6570\u7ec4\u4e2d\u672a\u627e\u5230\");\r\n\t\t\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n<p>\u8bf7\u6ce8\u610f\u4f7f\u7528 &#8220;break&#8221; \u5173\u952e\u5b57\uff0c\u5728\u627e\u5230\u5b57\u7b26\u4e32\u540e\u7acb\u5373\u9000\u51fa\u5faa\u73af\u3002<\/p>\n<h3>Java\u5b57\u7b26\u4e32\u6570\u7ec4\u6392\u5e8f<\/h3>\n<p>\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u81ea\u5df1\u7684\u6392\u5e8f\u7b97\u6cd5\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528Arrays\u7c7b\u7684\u6392\u5e8f\u65b9\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code>String[] vowels = {\"a\",\"i\",\"u\",\"e\",\"o\"};\r\n\t\t\r\nSystem.out.println(\"\u6392\u5e8f\u524d \"+Arrays.toString(vowels));\r\n\r\nArrays.sort(vowels);\r\n\t\t\r\nSystem.out.println(\"\u6392\u5e8f\u540e \"+Arrays.toString(vowels));\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0a\u4ee3\u7801\u7247\u6bb5\u7684\u8f93\u51fa\u5c06\u662f\uff1a<\/p>\n<pre class=\"post-pre\"><code>\u6392\u5e8f\u524d [a, i, u, e, o]\r\n\u6392\u5e8f\u540e [a, e, i, o, u]\r\n<\/code><\/pre>\n<p>\u8bf7\u6ce8\u610f\uff0cString\u5b9e\u73b0\u4e86Comparable\u63a5\u53e3\uff0c\u56e0\u6b64\u53ef\u4ee5\u8fdb\u884c\u81ea\u7136\u6392\u5e8f\u3002\u5982\u679c\u60a8\u60f3\u6309\u5176\u4ed6\u65b9\u5f0f\u6392\u5e8f\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f20\u9012Comparator\u6765\u4f7f\u7528Arrays.sort()\u91cd\u8f7d\u65b9\u6cd5\u3002\u5728Java\u4e2d\u5b66\u4e60\u6709\u5173\u8fd9\u4e9b\u6392\u5e8f\u6280\u5de7\uff0c\u8bf7\u67e5\u9605Comparable\u548cComparator\u3002<\/p>\n<h3>\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u6570\u7ec4\u3002<\/h3>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528split()\u65b9\u6cd5\u5c06String\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u6570\u7ec4\u3002\u5f53\u60a8\u8f93\u5165\u4e00\u4e2a\u5355\u72ec\u7684\u5b57\u7b26\u4e32\uff0c\u5e76\u4e14\u503c\u662f\u7528\u5206\u9694\u7b26\u5b57\u7b26\u5206\u9694\u7684\u65f6\u5019\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u975e\u5e38\u6709\u7528\u3002<\/p>\n<pre class=\"post-pre\"><code>String str = \"a,e,i,o,u\";\r\nString[] vowels = str.split(\",\");\r\nSystem.out.println(Arrays.toString(vowels)); \/\/[a, e, i, o, u]\r\n<\/code><\/pre>\n<h3>\u5c06\u5b57\u7b26\u4e32\u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3002<\/h3>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Arrays.toString()\u65b9\u6cd5\u5c06String\u6570\u7ec4\u8f6c\u6362\u4e3aString\u3002\u8bf7\u6ce8\u610f\uff0c\u6570\u7ec4\u6ca1\u6709\u5b9e\u73b0toString()\u65b9\u6cd5\uff0c\u6240\u4ee5\u5982\u679c\u4f60\u60f3\u83b7\u5f97\u5b83\u7684\u5b57\u7b26\u4e32\u8868\u793a\uff0c\u5c31\u5fc5\u987b\u4f9d\u8d56\u4e8eArrays\u7c7b\uff0c\u6216\u8005\u7f16\u5199\u81ea\u5df1\u7684\u81ea\u5b9a\u4e49\u4ee3\u7801\u3002<\/p>\n<pre class=\"post-pre\"><code>String[] vowels = { \"a\", \"e\", \"i\", \"o\", \"u\" };\r\nSystem.out.println(vowels);\r\nSystem.out.println(Arrays.toString(vowels));\r\n<\/code><\/pre>\n<p>\u8f93\u51fa\u5c06\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<pre class=\"post-pre\"><code>[Ljava.lang.String;@3d04a311\r\n[a, e, i, o, u]\r\n<\/code><\/pre>\n<p>\u7b2c\u4e00\u4e2a\u8f93\u51fa\u662f\u7531\u4e8eObject\u7c7b\u7684toString()\u65b9\u6cd5\u5b9e\u73b0\u5982\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code>public String toString() {\r\n        return getClass().getName() + \"@\" + Integer.toHexString(hashCode());\r\n    }\r\n<\/code><\/pre>\n<h3>Java\u4e2d\u5c06String\u6570\u7ec4\u8f6c\u6362\u4e3aList<\/h3>\n<p>\u5c06Java\u4e2d\u7684String\u6570\u7ec4\u8f6c\u6362\u4e3aList<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Arrays.toList()\u65b9\u6cd5\u5c06\u5b57\u7b26\u4e32\u6570\u7ec4\u8868\u793a\u4e3a\u5217\u8868\u3002\u6ce8\u610f\uff0c\u8fd9\u4e2a\u5217\u8868\u7531\u6570\u7ec4\u652f\u6301\uff0c\u4efb\u4f55\u7ed3\u6784\u4e0a\u7684\u4fee\u6539\u90fd\u4f1a\u5bfc\u81f4java.lang.UnsupportedOperationException\u3002<\/p>\n<pre class=\"post-pre\"><code>String[] vowels = { \"a\", \"e\", \"i\", \"o\", \"u\", \"a\", \"o\" };\r\n\r\nList&lt;String&gt; vowelsList = Arrays.asList(vowels);\r\nSystem.out.println(\"\u5143\u97f3\u5217\u8868 = \"+vowelsList);\r\n\/\/vowelsList.add(\"x\"); \/\/java.lang.UnsupportedOperationException\r\n\r\nvowelsList.set(0, \"x\"); \/\/\u5141\u8bb8\uff0c\u56e0\u4e3a\u6ca1\u6709\u7ed3\u6784\u6027\u4fee\u6539\r\nSystem.out.println(\"\u5143\u97f3\u5217\u8868 = \"+vowelsList);\r\n<\/code><\/pre>\n<p>\u8fd9\u5c31\u662f\u5173\u4e8eJava\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u5168\u90e8\u5185\u5bb9\u3002\u53c2\u8003\u8d44\u6599\uff1aArrays Oracle\u6587\u6863<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u662f\u6587\u7ae0\u300aJava\u5b57\u7b26\u4e32\u6570\u7ec4\u300b\u7684\u7b2c1\u90e8\u5206\uff08\u51711\u90e8\u5206\uff09\u3002 \u5185\u5bb9\u7247\u6bb5: Java\u5b57\u7b26\u4e32\u6570\u7ec4\u7528\u4e8e\u5b58\u50a8\u56fa\u5b9a\u6570\u91cf\u7684\u5b57\u7b26\u4e32 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