{"id":301469,"date":"2024-05-20T18:08:58","date_gmt":"2024-05-20T10:08:58","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/301469.html"},"modified":"2024-05-20T18:09:24","modified_gmt":"2024-05-20T10:09:24","slug":"java-%e9%a1%b9%e7%9b%ae%e5%a6%82%e4%bd%95%e5%b0%86%e5%8d%95%e8%af%8d%e8%bd%ac%e5%85%a5%e5%ad%97%e6%af%8d%e6%95%b0%e7%bb%84%e4%b8%ad-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/301469.html","title":{"rendered":"java \u9879\u76ee\u5982\u4f55\u5c06\u5355\u8bcd\u8f6c\u5165\u5b57\u6bcd\u6570\u7ec4\u4e2d"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/26213637\/a1b4e504-84b9-43c9-87d8-0a3750493f7a.webp\" alt=\"java \u9879\u76ee\u5982\u4f55\u5c06\u5355\u8bcd\u8f6c\u5165\u5b57\u6bcd\u6570\u7ec4\u4e2d\" \/><\/p>\n<p><p>\u5c06\u5355\u8bcd\u8f6c\u5165\u5b57\u6bcd\u6570\u7ec4\u662fJava\u7f16\u7a0b\u8bed\u8a00\u4e2d\u4e00\u4e2a\u5e38\u89c1\u7684\u64cd\u4f5c\uff0c\u5b83\u53ef\u4ee5\u7528\u4e8e\u591a\u79cd\u5e94\u7528\uff0c\u6bd4\u5982\u5b57\u7b26\u4e32\u5904\u7406\u3001\u6e38\u620f\u5f00\u53d1\u3001\u6570\u636e\u5206\u6790\u7b49\u3002<strong>\u5728Java\u4e2d\uff0c\u5c06\u5355\u8bcd\u8f6c\u5165\u5b57\u6bcd\u6570\u7ec4\u4e3b\u8981\u53ef\u4ee5\u901a\u8fc7<code>toCharArray()<\/code>\u65b9\u6cd5\u3001<code>char<\/code>\u7c7b\u578b\u7684\u5faa\u73af\u904d\u5386\u3001\u4ee5\u53caJava 8\u7684\u6d41\uff08Streams\uff09API\u5b9e\u73b0<\/strong>\u3002\u8fd9\u4e9b\u65b9\u6cd5\u5404\u6709\u7279\u70b9\uff0c\u4f46\u5728\u591a\u6570\u60c5\u51b5\u4e0b\uff0c<code>toCharArray()<\/code>\u65b9\u6cd5\u56e0\u5176\u7b80\u6d01\u6027\u800c\u88ab\u5e7f\u6cdb\u4f7f\u7528\u3002\u8fd9\u4e2a\u65b9\u6cd5\u76f4\u63a5\u5c06\u5b57\u7b26\u4e32\u5bf9\u8c61\u8f6c\u6362\u6210\u4e00\u4e2a\u5b57\u7b26\u6570\u7ec4\uff0c\u6bcf\u4e2a\u6570\u7ec4\u5143\u7d20\u5bf9\u5e94\u5b57\u7b26\u4e32\u4e2d\u7684\u4e00\u4e2a\u5b57\u7b26\u3002\u8fd9\u4e0d\u4ec5\u4ee3\u7801\u7b80\u6d01\u6613\u8bfb\uff0c\u800c\u4e14\u6267\u884c\u6548\u7387\u9ad8\uff0c\u5c24\u5176\u9002\u7528\u4e8e\u9700\u8981\u5bf9\u5355\u8bcd\u4e2d\u7684\u6bcf\u4e2a\u5b57\u6bcd\u8fdb\u884c\u5355\u72ec\u5904\u7406\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001TOCHARARRAY()\u65b9\u6cd5<\/h3>\n<\/p>\n<p><p>Java\u7684String\u7c7b\u63d0\u4f9b\u4e86<code>toCharArray()<\/code>\u65b9\u6cd5\uff0c\u8fd9\u662f\u5c06\u5355\u8bcd\u8f6c\u5165\u5b57\u6bcd\u6570\u7ec4\u4e2d\u6700\u76f4\u63a5\u3001\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u3002\u53ea\u9700\u8981\u8c03\u7528\u5b57\u7b26\u4e32\u5bf9\u8c61\u7684<code>toCharArray()<\/code>\u65b9\u6cd5\uff0c\u5373\u53ef\u5f97\u5230\u4e00\u4e2a\u4e0e\u8be5\u5b57\u7b26\u4e32\u957f\u5ea6\u76f8\u540c\u7684\u5b57\u7b26\u6570\u7ec4\u3002\u6bcf\u4e2a\u6570\u7ec4\u5143\u7d20\u90fd\u662f\u5b57\u7b26\u4e32\u4e2d\u5bf9\u5e94\u4f4d\u7f6e\u7684\u5b57\u7b26\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-java\">public class M<a href=\"https:\/\/docs.pingcode.com\/blog\/59162.html\" target=\"_blank\">AI<\/a>n {<\/p>\n<p>    public static void main(String[] args) {<\/p>\n<p>        String word = &quot;example&quot;;<\/p>\n<p>        char[] letters = word.toCharArray();<\/p>\n<p>        for(char letter : letters) {<\/p>\n<p>            System.out.println(letter);<\/p>\n<p>        }<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u6bb5\u4ee3\u7801\u9996\u5148\u5b9a\u4e49\u4e86\u4e00\u4e2a\u5b57\u7b26\u4e32<code>example<\/code>\uff0c\u7136\u540e\u901a\u8fc7\u8c03\u7528<code>toCharArray()<\/code>\u65b9\u6cd5\u5c06\u5176\u8f6c\u6362\u4e3a\u5b57\u7b26\u6570\u7ec4<code>letters<\/code>\u3002\u6700\u540e\uff0c\u901a\u8fc7\u589e\u5f3a\u578bfor\u5faa\u73af\u904d\u5386\u5e76\u6253\u5370\u51fa\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5b57\u7b26\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001CHAR\u7c7b\u578b\u7684\u5faa\u73af\u904d\u5386<\/h3>\n<\/p>\n<p><p>\u9664\u4e86<code>toCharArray()<\/code>\u65b9\u6cd5\u5916\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u5faa\u73af\u904d\u5386\u5b57\u7b26\u4e32\u7684\u6bcf\u4e2a\u5b57\u7b26\u6765\u5b8c\u6210\u8f6c\u6362\u3002\u8fd9\u79cd\u65b9\u6cd5\u867d\u7136\u4ee3\u7801\u91cf\u7565\u591a\uff0c\u4f46\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7684\u7075\u6d3b\u6027\uff0c\u6bd4\u5982\u5728\u8f6c\u6362\u8fc7\u7a0b\u4e2d\u4fee\u6539\u5b57\u7b26\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-java\">public class Main {<\/p>\n<p>    public static void main(String[] args) {<\/p>\n<p>        String word = &quot;flexible&quot;;<\/p>\n<p>        char[] letters = new char[word.length()];<\/p>\n<p>        for(int i = 0; i &lt; word.length(); i++) {<\/p>\n<p>            letters[i] = word.charAt(i);<\/p>\n<p>        }<\/p>\n<p>        for(char letter : letters) {<\/p>\n<p>            System.out.println(letter);<\/p>\n<p>        }<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u6bb5\u4ee3\u7801\u901a\u8fc7<code>charAt(int index)<\/code>\u65b9\u6cd5\u9010\u4e2a\u83b7\u53d6\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26\uff0c\u5e76\u5c06\u5176\u8d4b\u503c\u7ed9\u5b57\u7b26\u6570\u7ec4\u3002\u8fd9\u79cd\u65b9\u6cd5\u5141\u8bb8\u5728\u5c06\u5b57\u7b26\u4fdd\u5b58\u5230\u6570\u7ec4\u524d\u8fdb\u884c\u68c0\u67e5\u6216\u8005\u5904\u7406\uff0c\u5982\u5b57\u7b26\u8f6c\u6362\u3001\u8fc7\u6ee4\u7b49\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001JAVA 8\u7684\u6d41\uff08STREAMS\uff09API<\/h3>\n<\/p>\n<p><p>Java 8\u5f15\u5165\u4e86\u6d41\uff08Streams\uff09API\uff0c\u4e3a\u5904\u7406\u96c6\u5408\u548c\u6570\u7ec4\u63d0\u4f9b\u4e86\u65b0\u7684\u601d\u8def\u3002\u901a\u8fc7\u4f7f\u7528Streams API\uff0c\u53ef\u4ee5\u4ee5\u66f4\u58f0\u660e\u6027\u7684\u65b9\u5f0f\u5c06\u5355\u8bcd\u8f6c\u5165\u5b57\u6bcd\u6570\u7ec4\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-java\">import java.util.stream.*;<\/p>\n<p>public class Main {<\/p>\n<p>    public static void main(String[] args) {<\/p>\n<p>        String word = &quot;stream&quot;;<\/p>\n<p>        char[] letters = word.chars() \/\/ \u5c06String\u8f6c\u6362\u4e3aIntStream<\/p>\n<p>                              .mapToObj(e -&gt; (char)e) \/\/ \u8f6c\u6362IntStream\u4e3aStream&lt;Character&gt;<\/p>\n<p>                              .collect(Collectors.toList()) \/\/ \u8f6c\u6362\u4e3aList&lt;Character&gt;<\/p>\n<p>                              .stream() \/\/ \u8f6c\u6362List\u4e3aStream<\/p>\n<p>                              .collect(Collectors.joining()) \/\/ \u5c06Stream\u96c6\u5408\u8d77\u6765\u5f62\u6210\u5b57\u7b26\u4e32<\/p>\n<p>                              .toCharArray(); \/\/ \u6700\u540e\u8f6c\u6362\u4e3achar\u6570\u7ec4<\/p>\n<p>        for(char letter : letters) {<\/p>\n<p>            System.out.println(letter);<\/p>\n<p>        }<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7Streams API\uff0c\u9996\u5148\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a<code>IntStream<\/code>\uff0c\u8fd9\u5176\u4e2d\u5305\u542b\u4e86\u5b57\u7b26\u4e32\u4e2d\u6bcf\u4e2a\u5b57\u7b26\u7684ASCII\u503c\u3002\u7136\u540e\u901a\u8fc7<code>mapToObj<\/code>\u5c06\u6bcf\u4e2a\u6574\u6570\u6620\u5c04\u4e3a\u5bf9\u5e94\u7684<code>Character<\/code>\u5bf9\u8c61\uff0c\u968f\u540e\u901a\u8fc7<code>collect<\/code>\u65b9\u6cd5\u8f6c\u6362\u4e3a\u5b57\u7b26\u6570\u7ec4\u3002\u8fd9\u79cd\u65b9\u6cd5\u4ee3\u7801\u66f4\u4e3a\u73b0\u4ee3\uff0c\u4f46\u76f8\u8f83\u4e8e<code>toCharArray()<\/code>\u65b9\u6cd5\uff0c\u5176\u6027\u80fd\u7a0d\u900a\u4e00\u7b79\uff0c\u66f4\u9002\u5408\u4e8e\u9700\u8981\u8fdb\u884c\u590d\u6742\u5904\u7406\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n<p><p><strong>\u7efc\u4e0a\u6240\u8ff0\uff0c\u5c06\u5355\u8bcd\u8f6c\u5165\u5b57\u6bcd\u6570\u7ec4\u5728Java\u4e2d\u6709\u591a\u79cd\u65b9\u6cd5\uff0c\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u9700\u8981\u6839\u636e\u5b9e\u9645\u7684\u5e94\u7528\u573a\u666f\u548c\u6027\u80fd\u9700\u6c42\u51b3\u5b9a<\/strong>\u3002\u5bf9\u4e8e\u5927\u591a\u6570\u57fa\u7840\u4f7f\u7528\u60c5\u51b5\uff0c<code>toCharArray()<\/code>\u65b9\u6cd5\u56e0\u5176\u7b80\u5355\u9ad8\u6548\u800c\u6210\u4e3a\u9996\u9009\u3002\u7136\u800c\uff0c\u5bf9\u4e8e\u9700\u8981\u66f4\u7ec6\u7c92\u5ea6\u63a7\u5236\u7684\u573a\u5408\uff0c\u5b57\u7b26\u7684\u5faa\u73af\u904d\u5386\u548cJava 8\u7684Streams API\u63d0\u4f9b\u4e86\u66f4\u591a\u53ef\u80fd\u6027\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>1. \u5982\u4f55\u5728Java\u9879\u76ee\u4e2d\u5c06\u5355\u8bcd\u8f6c\u6362\u4e3a\u5b57\u6bcd\u6570\u7ec4\uff1f<\/strong><\/p>\n<p>\u5728Java\u9879\u76ee\u4e2d\u5c06\u5355\u8bcd\u8f6c\u6362\u4e3a\u5b57\u6bcd\u6570\u7ec4\u5f88\u7b80\u5355\u3002\u9996\u5148\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528String\u7c7b\u7684toCharArray()\u65b9\u6cd5\u6765\u5c06\u5355\u8bcd\u8f6c\u6362\u4e3a\u5b57\u7b26\u6570\u7ec4\u3002\u7136\u540e\uff0c\u4f60\u53ef\u4ee5\u5c06\u8be5\u5b57\u7b26\u6570\u7ec4\u8d4b\u503c\u7ed9\u4e00\u4e2a\u65b0\u7684\u5b57\u7b26\u6570\u7ec4\u53d8\u91cf\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-java\">String word = &quot;example&quot;;\nchar[] letters = word.toCharArray();\n<\/code><\/pre>\n<p>\u73b0\u5728\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528letters\u6570\u7ec4\u6765\u8bbf\u95ee\u548c\u5904\u7406\u5355\u8bcd\u4e2d\u7684\u6bcf\u4e2a\u5b57\u6bcd\u3002<\/p>\n<p><strong>2. \u5728Java\u4e2d\u5982\u4f55\u5c06\u4e00\u4e2a\u53e5\u5b50\u62c6\u5206\u4e3a\u5355\u8bcd\uff0c\u5e76\u5c06\u6bcf\u4e2a\u5355\u8bcd\u8f6c\u6362\u4e3a\u5b57\u6bcd\u6570\u7ec4\uff1f<\/strong><\/p>\n<p>\u8981\u5c06\u53e5\u5b50\u62c6\u5206\u4e3a\u5355\u8bcd\uff0c\u5e76\u5c06\u6bcf\u4e2a\u5355\u8bcd\u8f6c\u6362\u4e3a\u5b57\u6bcd\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528Java\u4e2d\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u548c\u5faa\u73af\u3002\u9996\u5148\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528split()\u65b9\u6cd5\u5c06\u53e5\u5b50\u62c6\u5206\u4e3a\u5355\u8bcd\uff0c\u5c06\u5355\u8bcd\u5b58\u50a8\u5728\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\u4e2d\u3002\u7136\u540e\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528for\u5faa\u73af\u904d\u5386\u8be5\u5b57\u7b26\u4e32\u6570\u7ec4\uff0c\u5e76\u5c06\u6bcf\u4e2a\u5355\u8bcd\u8f6c\u6362\u4e3a\u5b57\u6bcd\u6570\u7ec4\u3002\u6700\u540e\uff0c\u4f60\u53ef\u4ee5\u5c06\u8fd9\u4e9b\u5b57\u6bcd\u6570\u7ec4\u5b58\u50a8\u5728\u4e00\u4e2a\u5b57\u6bcd\u6570\u7ec4\u5217\u8868\u4e2d\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-java\">String sentence = &quot;This is an example sentence&quot;;\nString[] words = sentence.split(&quot; &quot;);\nList&lt;char[]&gt; letterArrays = new ArrayList&lt;&gt;();\n\nfor (String word : words) {\n    char[] letters = word.toCharArray();\n    letterArrays.add(letters);\n}\n<\/code><\/pre>\n<p>\u73b0\u5728\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u904d\u5386letterArrays\u5217\u8868\u6765\u8bbf\u95ee\u548c\u5904\u7406\u6bcf\u4e2a\u5355\u8bcd\u7684\u5b57\u6bcd\u6570\u7ec4\u3002<\/p>\n<p><strong>3. \u5982\u4f55\u5728Java\u9879\u76ee\u4e2d\u5c06\u7528\u6237\u8f93\u5165\u7684\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5b57\u6bcd\u6570\u7ec4\uff1f<\/strong><\/p>\n<p>\u8981\u5728Java\u9879\u76ee\u4e2d\u5c06\u7528\u6237\u8f93\u5165\u7684\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5b57\u6bcd\u6570\u7ec4\uff0c\u9996\u5148\u4f60\u9700\u8981\u83b7\u53d6\u7528\u6237\u8f93\u5165\u7684\u5b57\u7b26\u4e32\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528Scanner\u7c7b\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002\u7136\u540e\uff0c\u5c06\u83b7\u53d6\u5230\u7684\u5b57\u7b26\u4e32\u5b58\u50a8\u5728\u4e00\u4e2a\u53d8\u91cf\u4e2d\uff0c\u7136\u540e\u4f7f\u7528toCharArray()\u65b9\u6cd5\u5c06\u5176\u8f6c\u6362\u4e3a\u5b57\u6bcd\u6570\u7ec4\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-java\">import java.util.Scanner;\n\npublic class Example {\n    public static void main(String[] args) {\n        Scanner scanner = new Scanner(System.in);\n        \n        System.out.println(&quot;\u8bf7\u8f93\u5165\u4e00\u4e2a\u5b57\u7b26\u4e32\uff1a&quot;);\n        String input = scanner.nextLine();\n\n        char[] letters = input.toCharArray();\n        \n        \/\/ \u73b0\u5728\u4f60\u53ef\u4ee5\u4f7f\u7528letters\u6570\u7ec4\u6765\u8bbf\u95ee\u548c\u5904\u7406\u7528\u6237\u8f93\u5165\u7684\u6bcf\u4e2a\u5b57\u6bcd\n    }\n}\n<\/code><\/pre>\n<p>\u4ee5\u4e0a\u4ee3\u7801\u5c06\u63d0\u793a\u7528\u6237\u8f93\u5165\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u5e76\u5c06\u8be5\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5b57\u6bcd\u6570\u7ec4\u5b58\u50a8\u5728letters\u53d8\u91cf\u4e2d\u3002\u4f60\u53ef\u4ee5\u6839\u636e\u9700\u8981\u8fdb\u4e00\u6b65\u5904\u7406\u8fd9\u4e2a\u5b57\u6bcd\u6570\u7ec4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5c06\u5355\u8bcd\u8f6c\u5165\u5b57\u6bcd\u6570\u7ec4\u662fJava\u7f16\u7a0b\u8bed\u8a00\u4e2d\u4e00\u4e2a\u5e38\u89c1\u7684\u64cd\u4f5c\uff0c\u5b83\u53ef\u4ee5\u7528\u4e8e\u591a\u79cd\u5e94\u7528\uff0c\u6bd4\u5982\u5b57\u7b26\u4e32\u5904\u7406\u3001\u6e38\u620f\u5f00\u53d1\u3001\u6570\u636e\u5206\u6790\u7b49 [&hellip;]","protected":false},"author":3,"featured_media":301495,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/301469"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=301469"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/301469\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/301495"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=301469"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=301469"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=301469"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}