{"id":65136,"date":"2025-05-03T09:18:17","date_gmt":"2025-05-03T01:18:17","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65136\/"},"modified":"2025-05-03T09:18:17","modified_gmt":"2025-05-03T01:18:17","slug":"%e5%ad%97%e7%ac%a6%e4%b8%b2%ef%bc%9ajava-%e9%9d%a2%e8%af%95%e7%b2%be%e8%a6%81%e4%b8%ad%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%96%b9%e6%b3%95-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65136\/","title":{"rendered":"\u5b57\u7b26\u4e32\uff1aJava \u9762\u8bd5\u7cbe\u8981\u4e2d\u7684\u57fa\u672c\u65b9\u6cd5"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173120978322968.jpg\" class=\"aligncenter\" title=\"\u5b57\u7b26\u4e32\uff1aJava \u9762\u8bd5\u7cbe\u8981\u4e2d\u7684\u57fa\u672c\u65b9\u6cd5\u63d2\u56fe\" alt=\"\u5b57\u7b26\u4e32\uff1aJava \u9762\u8bd5\u7cbe\u8981\u4e2d\u7684\u57fa\u672c\u65b9\u6cd5\u63d2\u56fe\" \/><\/p>\n<p>\u5b57\u7b26\u4e32\u662f\u51e0\u4e4e\u6bcf\u4e2a java \u5e94\u7528\u7a0b\u5e8f\u7684\u57fa\u672c\u7ec4\u6210\u90e8\u5206\u3002\u65e0\u8bba\u60a8\u662f\u6784\u5efa\u590d\u6742\u7684\u7b97\u6cd5\u3001\u5904\u7406\u7528\u6237\u8f93\u5165\u8fd8\u662f\u6267\u884c\u6587\u672c\u64cd\u4f5c\uff0c\u90fd\u5fc5\u987b\u4e86\u89e3\u5982\u4f55\u6709\u6548\u5730\u4f7f\u7528 java \u7684 string \u7c7b\u65b9\u6cd5\u3002 <\/p>\n<p>\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u6df1\u5165\u63a2\u8ba8\u6bcf\u4e2a java \u5f00\u53d1\u4eba\u5458\u90fd\u5e94\u8be5\u77e5\u9053\u7684\u4e00\u4e9b\u57fa\u672c\u4f46\u5fc5\u4e0d\u53ef\u5c11\u7684\u5b57\u7b26\u4e32\u65b9\u6cd5\uff0c<strong>\u5c24\u5176\u662f\u9762\u8bd5<\/strong>\u3002<\/p>\n<hr>\n<h3> 1. equalsignorecase()\uff1a\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u6bd4\u8f83 <\/h3>\n<ul>\n<li>\n<p>equalsignorecase() \u65b9\u6cd5\u5141\u8bb8\u60a8\u6bd4\u8f83\u4e24\u4e2a\u5b57\u7b26\u4e32\u800c\u4e0d\u8003\u8651\u5b83\u4eec\u7684\u5927\u5c0f\u5199\u3002<\/p>\n<\/li>\n<li>\n<p>\u5f53\u60a8\u60f3\u8981\u68c0\u67e5\u662f\u5426\u76f8\u7b49\u800c\u4e0d\u62c5\u5fc3\u5927\u5c0f\u5199\u5dee\u5f02\u65f6\uff0c\u8fd9\u662f\u4e00\u4e2a\u65b9\u4fbf\u7684\u65b9\u6cd5\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>string string = \"hello\";\nsystem.out.println(string.equalsignorecase(\"hello\")); \/\/ result: true\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<hr>\n<h3> 2. tolowercase() \u548c touppercase()\uff1a\u5927\u5c0f\u5199\u8f6c\u6362 <\/h3>\n<p>\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5168\u90e8\u5c0f\u5199\u6216\u5927\u5199\u662f\u4e00\u9879\u5e38\u89c1\u4efb\u52a1\uff0cjava \u63d0\u4f9b\u4e86\u5185\u7f6e\u65b9\u6cd5\u6765\u6267\u884c\u6b64\u64cd\u4f5c\u3002<\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>string string = \"hello\";\nsystem.out.println(string.tolowercase()); \/\/ result: hello\nsystem.out.println(string.touppercase()); \/\/ result: hello\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<hr>\n<h3> 3.startswith()\u548cendswith()\uff1a\u68c0\u67e5\u5b57\u7b26\u4e32\u8fb9\u754c <\/h3>\n<p>\u5982\u679c\u60a8\u9700\u8981\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u4ee5<strong>\u7279\u5b9a\u5b57\u7b26\u5e8f\u5217<\/strong>\u5f00\u5934\u6216\u7ed3\u5c3e\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u5c31\u662f\u60a8\u6240\u9700\u8981\u7684\u3002 <\/p>\n<blockquote><p>\n  \u9ed8\u8ba4\u60c5\u51b5\u4e0b\u533a\u5206\u5927\u5c0f\u5199\uff0c\u56e0\u6b64\u4f7f\u7528\u65f6\u8981\u5c0f\u5fc3\u3002\n<\/p><\/blockquote>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>string string = \"hello\";\nsystem.out.println(string.startswith(\"h\")); \/\/ result: false\nsystem.out.println(string.endswith(\"lo\")); \/\/ result: true\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<h3> \u5e38\u89c1\u9762\u8bd5\u95ee\u9898 <\/h3>\n<p><strong>\u5982\u4f55\u68c0\u67e5\u7ed9\u5b9a\u5b57\u7b26\u4e32\u662f\u5426\u4ee5\u7279\u5b9a\u5b50\u5b57\u7b26\u4e32\u5f00\u5934\uff0c\u5ffd\u7565\u5927\u5c0f\u5199\uff1f<\/strong><\/p>\n<p>\u8fd9\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u9762\u8bd5\u95ee\u9898\uff0c\u7528\u4e8e\u6d4b\u8bd5\u60a8\u5bf9 java \u4e2d\u5b57\u7b26\u4e32\u64cd\u4f5c\u548c\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u7684\u7406\u89e3\u3002 <\/p>\n<p>startswith() \u65b9\u6cd5\u9ed8\u8ba4<strong>\u533a\u5206\u5927\u5c0f\u5199<\/strong>\uff0c\u56e0\u6b64\u8981\u6267\u884c\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u7684\u68c0\u67e5\uff0c\u9700\u8981\u4f7f\u7528 tolowercase() \u6216 touppercase \u5c06\u5b57\u7b26\u4e32\u548c\u5b50\u5b57\u7b26\u4e32\u6807\u51c6\u5316\u4e3a\u76f8\u540c\u7684\u5927\u5c0f\u5199().<\/p>\n<p>\u5b9e\u73b0\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>string givenstring = \"example\";\nstring givencharacterstring = \"e\";\nsystem.out.println(\n    givenstring.tolowercase().startswith(\n        givencharacterstring.tolowercase()\n    )\n); \/\/ result: true\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<h3> \u89e3\u91ca\uff1a <\/h3>\n<ul>\n<li>\n<p>startswith()\uff1a\u8be5\u65b9\u6cd5\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u4ee5\u6307\u5b9a\u5b50\u5b57\u7b26\u4e32\u5f00\u5934\uff0c\u4f46\u533a\u5206\u5927\u5c0f\u5199\u3002 <\/p>\n<\/li>\n<li>\n<p>tolowercase()\uff1a\u5c06\u539f\u5b57\u7b26\u4e32\u548c\u5b50\u5b57\u7b26\u4e32\u90fd\u8f6c\u6362\u4e3a\u5c0f\u5199\uff0c\u8fdb\u884c\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u7684\u6bd4\u8f83\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u5c06\u4e24\u4e2a\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u76f8\u540c\u7684\u5927\u5c0f\u5199\uff0c\u60a8\u53ef\u4ee5\u786e\u4fdd\u5373\u4f7f\u8f93\u5165\u5b57\u7b26\u4e32\u6216\u5b50\u5b57\u7b26\u4e32\u5305\u542b\u5927\u5c0f\u5199\u6df7\u5408\u5b57\u7b26\uff0c\u8be5\u65b9\u6cd5\u4e5f\u80fd\u6b63\u5e38\u5de5\u4f5c\u3002<\/p>\n<hr>\n<h3> 4. tochararray()\uff1a\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5b57\u7b26\u6570\u7ec4 <\/h3>\n<p>\u5982\u679c\u60a8\u9700\u8981\u5904\u7406\u5355\u4e2a\u5b57\u7b26\uff0c\u53ef\u4ee5\u4f7f\u7528 tochararray() \u65b9\u6cd5\u8f7b\u677e\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5b57\u7b26\u6570\u7ec4\u3002<\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>string string = \"hello\";\nsystem.out.println(\n    arrays.tostring(string.tochararray())\n); \/\/ result: [h, e, l, l, o]\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<h4> \u89e3\u91ca\uff1a <\/h4>\n<p>\u6211\u4eec\u4f7f\u7528 arrays.tostring() \u4ee5 [h, e, l, l, o] \u683c\u5f0f\u6253\u5370\u5b57\u7b26\u6570\u7ec4\u3002\u5982\u679c\u6211\u4eec\u76f4\u63a5\u4f7f\u7528system.out.println(string.tochararray())\uff0c\u8f93\u51fa\u4f1a\u5c06\u6570\u7ec4\u5143\u7d20\u663e\u793a\u4e3a\u5b57\u7b26\u4e32hello\u3002 <\/p>\n<p>\u8fd9\u662f\u56e0\u4e3a println() \u65b9\u6cd5\u6709\u4e00\u4e2a<strong>\u91cd\u8f7d<\/strong>\u5b57\u7b26\u6570\u7ec4\u7248\u672c\u3002<\/p>\n<p>\u6709\u5173\u6b64\u884c\u4e3a\u7684\u66f4\u591a\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u591a\u6001\u6027\uff1ajava \u4e2d\u7684\u89e3\u7801\u65b9\u6cd5\u91cd\u8f7d\u3002<\/p>\n<hr>\n<h3> 5. charat()\u3001indexof() \u548c lastindexof()\uff1a\u5b57\u7b26\u641c\u7d22 <\/h3>\n<p>\u8fd9\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u5e2e\u52a9\u60a8\u5728\u5b57\u7b26\u4e32\u4e2d\u67e5\u627e<strong>\u7279\u5b9a\u5b57\u7b26<\/strong>\u3002<\/p>\n<ul>\n<li>\n<p>charat()\uff1a\u8fd4\u56de\u5b57\u7b26\u4e32\u4e2d<strong>\u7ed9\u5b9a\u7d22\u5f15<\/strong>\u5904\u7684\u5b57\u7b26\u3002<\/p>\n<\/li>\n<li>\n<p>indexof()\uff1a\u67e5\u627e\u6307\u5b9a\u5b57\u7b26\u7684<strong>\u7b2c\u4e00\u6b21\u51fa\u73b0<\/strong>\u3002\u5982\u679c\u4e0d\u5b58\u5728\u5219\u8fd4\u56de -1\u3002<\/p>\n<\/li>\n<li>\n<p>lastindexof()\uff1a\u67e5\u627e\u6307\u5b9a\u5b57\u7b26\u7684<strong>\u6700\u540e\u4e00\u6b21\u51fa\u73b0<\/strong>\u3002\u5982\u679c\u4e0d\u5b58\u5728\u5219\u8fd4\u56de -1\u3002<\/p>\n<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>string string = \"hello\";\nsystem.out.println(string.charat(0)); \/\/ result: h\nsystem.out.println(string.indexof('l')); \/\/ result: 2\nsystem.out.println(string.lastindexof('l')); \/\/ result: 3\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<hr>\n<h3> 6. contns()\uff1a\u5b50\u5b57\u7b26\u4e32\u5b58\u5728\u68c0\u67e5 <\/h3>\n<p>\u5f53\u60a8\u60f3\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u5305\u542b\u7279\u5b9a\u7684<strong>\u5b50\u5b57\u7b26\u4e32<\/strong>\u65f6\uff0ccontains() \u65b9\u6cd5\u53ef\u4ee5\u5e2e\u52a9\u60a8\u3002<\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>string string = \"hello\";\nsystem.out.println(string.contains(\"l\")); \/\/ result: true\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<hr>\n<h3> 7.replace()\uff1a\u66ff\u6362\u5b57\u7b26\u6216\u5b50\u5b57\u7b26\u4e32 <\/h3>\n<p>replace() \u65b9\u6cd5\u7528\u4e8e\u7528\u65b0\u503c\u66ff\u6362<strong>\u5b57\u7b26\u6216\u5b50\u5b57\u7b26\u4e32<\/strong>\u3002\u8fd9\u662f\u6587\u672c\u5904\u7406\u7684\u5fc5\u5907\u65b9\u6cd5\u3002<\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>string string = \"hello\";\nsystem.out.println(string.replace('l', 'p')); \/\/ result: heppo\nsystem.out.println(string.replace(\"pp\", \"ll\")); \/\/ result: hello\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<hr>\n<h3> 8. split()\uff1a\u5c06\u5b57\u7b26\u4e32\u5206\u5272\u6210\u591a\u4e2a\u90e8\u5206 <\/h3>\n<p>split() \u65b9\u6cd5\u6839\u636e<strong>\u5206\u9694\u7b26<\/strong>\u5c06\u5b57\u7b26\u4e32\u5212\u5206\u4e3a<strong>\u5b50\u5b57\u7b26\u4e32<\/strong>\u6570\u7ec4\u3002\u5b83\u5bf9\u4e8e\u89e3\u6790\u6587\u672c\u6570\u636e\u5f88\u6709\u7528\u3002<\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>string string2 = \" welcome to strings \";\nsystem.out.println(arrays.tostring(string2.split(\" \")));\n\/\/ result: [, welcome, to, strings]\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<hr>\n<h3> 9.compareto()\uff1a\u8bcd\u5178\u6bd4\u8f83 <\/h3>\n<p>compareto() \u65b9\u6cd5\u6309\u5b57\u5178\u987a\u5e8f\u6bd4\u8f83\u4e24\u4e2a\u5b57\u7b26\u4e32\u3002\u5982\u679c\u5b57\u7b26\u4e32\u8f83\u5927\uff0c\u5219\u8fd4\u56de\u6b63\u6570\uff1b\u5982\u679c\u8f83\u5c0f\uff0c\u5219\u8fd4\u56de\u8d1f\u6570\uff1b\u5982\u679c\u76f8\u7b49\uff0c\u5219\u8fd4\u56de 0\u3002<\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>string string = \"hello\";\nsystem.out.println(string.compareto(\"hllo\")); \/\/ result: -7\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<hr>\n<h3> 10. isblank() \u548c isempty()\uff1a\u68c0\u67e5\u5b57\u7b26\u4e32\u72b6\u6001 <\/h3>\n<ul>\n<li>\n<p>isblank()\uff1a\u5982\u679c\u5b57\u7b26\u4e32 <strong>\u4e3a\u7a7a<\/strong> \u6216\u5305\u542b <strong>\u4ec5\u7a7a\u683c<\/strong>\uff0c\u5219\u8fd4\u56de true\u3002<\/p>\n<\/li>\n<li>\n<p>isempty()\uff1a\u5982\u679c\u5b57\u7b26\u4e32\u6839\u672c\u6ca1\u6709\u5b57\u7b26\uff0c\u5219\u8fd4\u56de true\u3002<\/p>\n<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>string string1 = \"    \";\nsystem.out.println(string1.isblank()); \/\/ result: true\nsystem.out.println(string1.isempty()); \/\/ result: false\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<hr>\n<h3> 11. matches()\uff1a\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d <\/h3>\n<p>matches() \u65b9\u6cd5\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u4e0e\u7ed9\u5b9a\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d\u3002\u5b83\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6587\u672c\u6a21\u5f0f\u5339\u914d\u5de5\u5177\u3002<\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>string string = \"hello\";\nsystem.out.println(string.matches(\"(.*)l(.*)\")); \/\/ result: true\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<hr>\n<h3> 12.trim()\uff1a\u5220\u9664\u591a\u4f59\u7684\u7a7a\u683c <\/h3>\n<p>trim() \u65b9\u6cd5\u4f1a\u5220\u9664\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709\u524d\u5bfc\u548c\u5c3e\u968f\u7a7a\u683c\uff0c\u4ece\u800c\u66f4\u8f7b\u677e\u5730\u5904\u7406\u7528\u6237\u8f93\u5165\u6216\u6e05\u7406\u6570\u636e\u3002<\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>String string2 = \" Welcome to Strings \";\nSystem.out.println(string2.trim()); \/\/ Result: Welcome to Strings\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<hr>\n<h3> \u7ed3\u8bba <\/h3>\n<p>\u638c\u63e1\u8fd9\u4e9b\u5b57\u7b26\u4e32\u65b9\u6cd5\u5bf9\u4e8e\u4efb\u4f55\u4f7f\u7528 java \u5de5\u4f5c\u7684\u4eba\u6765\u8bf4\u90fd\u662f\u81f3\u5173\u91cd\u8981\u7684\uff0c\u5c24\u5176\u662f\u5728\u51c6\u5907\u9762\u8bd5\u65f6\u3002\u65e0\u8bba\u60a8\u662f\u5904\u7406\u7528\u6237\u8f93\u5165\u3001\u5904\u7406\u6587\u672c\u6570\u636e\u8fd8\u662f\u64cd\u4f5c\u5b57\u7b26\u4e32\u4ee5\u63d0\u9ad8\u6027\u80fd\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u90fd\u662f\u60a8\u7684\u9996\u9009\u5de5\u5177\u3002\u4ece\u5904\u7406\u533a\u5206\u5927\u5c0f\u5199\u5230\u4fee\u526a\u7a7a\u683c\uff0cjava \u63d0\u4f9b\u4e86\u4e00\u7ec4\u4e30\u5bcc\u7684\u5b57\u7b26\u4e32\u64cd\u4f5c\u5b9e\u7528\u7a0b\u5e8f\uff0c\u6bcf\u4e2a\u5f00\u53d1\u4eba\u5458\u90fd\u5e94\u8be5\u719f\u6089\u5b83\u4eec\u3002<\/p>\n<hr>\n<h2> \u76f8\u5173\u5e16\u5b50 <\/h2>\n<ul>\n<li>java \u57fa\u7840\u77e5\u8bc6<\/li>\n<li>\u6570\u7ec4\u9762\u8bd5\u8981\u70b9<\/li>\n<li>java \u5185\u5b58\u8981\u70b9<\/li>\n<li>java \u5173\u952e\u5b57\u8981\u70b9<\/li>\n<li>java oop \u57fa\u7840\u77e5\u8bc6<\/li>\n<li>\u96c6\u5408\u6846\u67b6\u8981\u70b9<\/li>\n<\/ul>\n<p>\u7f16\u7801\u5feb\u4e50\uff01<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5b57\u7b26\u4e32\uff1aJava \u9762\u8bd5\u7cbe\u8981\u4e2d\u7684\u57fa\u672c\u65b9\u6cd5\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b57\u7b26\u4e32\u662f\u51e0\u4e4e\u6bcf\u4e2a java \u5e94\u7528\u7a0b\u5e8f\u7684\u57fa\u672c\u7ec4\u6210\u90e8\u5206\u3002\u65e0\u8bba\u60a8\u662f\u6784\u5efa\u590d\u6742\u7684\u7b97\u6cd5\u3001\u5904\u7406\u7528\u6237\u8f93\u5165\u8fd8\u662f\u6267\u884c\u6587\u672c\u64cd\u4f5c\uff0c\u90fd\u5fc5\u987b\u4e86\u89e3\u5982\u4f55\u6709\u6548\u5730\u4f7f\u7528 java \u7684 string \u7c7b\u65b9\u6cd5\u3002 \u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u6df1\u5165\u63a2\u8ba8\u6bcf\u4e2a java \u5f00\u53d1\u4eba\u5458\u90fd\u5e94\u8be5\u77e5\u9053\u7684\u4e00\u4e9b\u57fa\u672c\u4f46\u5fc5\u4e0d\u53ef\u5c11\u7684\u5b57\u7b26\u4e32\u65b9\u6cd5\uff0c\u5c24\u5176\u662f\u9762\u8bd5\u3002 1. equalsignorecase()\uff1a\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u6bd4\u8f83 equalsignorecase() \u65b9\u6cd5\u5141\u8bb8\u60a8\u6bd4\u8f83\u4e24\u4e2a\u5b57\u7b26\u4e32\u800c\u4e0d\u8003\u8651\u5b83\u4eec\u7684\u5927\u5c0f\u5199\u3002 \u5f53\u60a8\u60f3\u8981\u68c0\u67e5\u662f\u5426\u76f8\u7b49\u800c\u4e0d\u62c5\u5fc3\u5927\u5c0f\u5199\u5dee\u5f02\u65f6\uff0c\u8fd9\u662f\u4e00\u4e2a\u65b9\u4fbf\u7684\u65b9\u6cd5\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u793a\u4f8b\uff1a string string = &#8220;hello&#8221;; system.out.println(string.equalsignorecase(&#8220;hello&#8221;)); \/\/ result: true \u767b\u5f55\u540e\u590d\u5236 2. tolowercase() \u548c touppercase()\uff1a\u5927\u5c0f\u5199\u8f6c\u6362 \u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5168\u90e8\u5c0f\u5199\u6216\u5927\u5199\u662f\u4e00\u9879\u5e38\u89c1\u4efb\u52a1\uff0cjava \u63d0\u4f9b\u4e86\u5185\u7f6e\u65b9\u6cd5\u6765\u6267\u884c\u6b64\u64cd\u4f5c\u3002 \u793a\u4f8b\uff1a string string = &#8220;hello&#8221;; system.out.println(string.tolowercase()); \/\/ result: hello system.out.println(string.touppercase()); \/\/ result: hello \u767b\u5f55\u540e\u590d\u5236 3.startswith()\u548cendswith()\uff1a\u68c0\u67e5\u5b57\u7b26\u4e32\u8fb9\u754c \u5982\u679c\u60a8\u9700\u8981\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u4ee5\u7279\u5b9a\u5b57\u7b26\u5e8f\u5217\u5f00\u5934\u6216\u7ed3\u5c3e\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u5c31\u662f\u60a8\u6240\u9700\u8981\u7684\u3002 \u9ed8\u8ba4\u60c5\u51b5\u4e0b\u533a\u5206\u5927\u5c0f\u5199\uff0c\u56e0\u6b64\u4f7f\u7528\u65f6\u8981\u5c0f\u5fc3\u3002 \u793a\u4f8b\uff1a string string = &#8220;hello&#8221;; system.out.println(string.startswith(&#8220;h&#8221;)); [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-65136","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65136","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=65136"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65136\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65136"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}