{"id":64245,"date":"2025-05-03T16:11:14","date_gmt":"2025-05-03T08:11:14","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64245\/"},"modified":"2025-05-03T16:11:14","modified_gmt":"2025-05-03T08:11:14","slug":"java%e4%b8%ad%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e5%9c%a8if%e4%b8%ad%e8%a1%a8%e8%be%be-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64245\/","title":{"rendered":"Java\u4e2d\u6570\u7ec4\u600e\u4e48\u5728if\u4e2d\u8868\u8fbe"},"content":{"rendered":"

\n java \u4e2d\u6570\u7ec4\u5e94\u7528\u4e8e if \u8bed\u53e5\uff1a\u8bed\u6cd5\uff1aif (array[index] == value) {…}\u5b9a\u4e49\u6570\u7ec4\u5e76\u8d4b\u503c\u3002\u83b7\u53d6\u6570\u7ec4\u5143\u7d20\u3002\u6bd4\u8f83\u5143\u7d20\u503c\u3002\u6ee1\u8db3\u6761\u4ef6\u65f6\u6267\u884c\u8bed\u53e5\u5757\u3002\n<\/p><\/blockquote>\n

\"Java\u4e2d\u6570\u7ec4\u600e\u4e48\u5728if\u4e2d\u8868\u8fbe\u63d2\u56fe\"<\/p>\n

Java\u4e2d\u6570\u7ec4\u5728if\u8bed\u53e5\u4e2d\u7684\u8868\u793a\u65b9\u6cd5<\/strong><\/p>\n

\u6982\u8ff0<\/strong><\/p>\n

\u5728Java\u4e2d\uff0c\u6570\u7ec4\u53ef\u4ee5\u7528\u4f5cif\u8bed\u53e5\u7684\u6761\u4ef6\u3002\u6570\u7ec4\u7684\u5143\u7d20\u503c\u53ef\u4ee5\u7528\u6765\u63a7\u5236\u8bed\u53e5\u7684\u6267\u884c\u6d41\u7a0b\u3002<\/p>\n

\u8bed\u6cd5<\/strong><\/p>\n

\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n

\u6570\u7ec4\u5728if\u8bed\u53e5\u4e2d\u7684\u8bed\u6cd5\u683c\u5f0f\u5982\u4e0b\uff1a<\/p>\n

if (array[index] == value) {\n    \/\/ \u8bed\u53e5\u5757\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5176\u4e2d\uff0carray \u662f\u6570\u7ec4\u53d8\u91cf\uff0cindex \u662f\u6570\u7ec4\u7d22\u5f15\uff0cvalue \u662f\u8981\u6bd4\u8f83\u7684\u503c\u3002<\/p>\n
\u4f7f\u7528\u65b9\u6cd5<\/strong><\/p>\n
\u8981\u4f7f\u7528\u6570\u7ec4\u5728if\u8bed\u53e5\u4e2d\uff0c\u9700\u8981\u6267\u884c\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n
    \n
  1.  \u5b9a\u4e49\u6570\u7ec4\u53d8\u91cf<\/strong>\uff1a\u58f0\u660e\u4e00\u4e2a\u6570\u7ec4\u53d8\u91cf\u5e76\u521d\u59cb\u5316\u5143\u7d20\u503c\u3002<\/li>\n
  2.  \u83b7\u53d6\u6570\u7ec4\u5143\u7d20<\/strong>\uff1a\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u8bbf\u95ee\u7279\u5b9a\u5143\u7d20\u7684\u503c\u3002<\/li>\n
  3.  \u6bd4\u8f83\u5143\u7d20\u503c<\/strong>\uff1a\u5c06\u6570\u7ec4\u5143\u7d20\u503c\u4e0e\u7ed9\u5b9a\u7684\u503c\u8fdb\u884c\u6bd4\u8f83\u3002<\/li>\n
  4.  \u6267\u884c\u8bed\u53e5\u5757<\/strong>\uff1a\u5982\u679c\u6bd4\u8f83\u7ed3\u679c\u4e3a\u771f\uff0c\u6267\u884cif\u8bed\u53e5\u5757\u5185\u7684\u8bed\u53e5\u3002<\/li>\n<\/ol>\n
    \u793a\u4f8b<\/strong><\/p>\n
    \u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528\u6570\u7ec4\u5728if\u8bed\u53e5\u4e2d\u7684\u793a\u4f8b\uff1a<\/p>\n
    int[] numbers = {1, 2, 3, 4, 5};\n\nif (numbers[2] == 3) {\n    System.out.println(\"\u6570\u7ec4\u7684\u7b2c\u4e09\u4e2a\u5143\u7d20\u4e3a 3\");\n}<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cnumbers \u662f\u4e00\u4e2a\u6574\u578b\u6570\u7ec4\uff0cnumbers[2] \u83b7\u53d6\u6570\u7ec4\u7684\u7b2c\u4e09\u4e2a\u5143\u7d20\uff0c\u5e76\u5c06\u5176\u4e0e\u503c 3 \u8fdb\u884c\u6bd4\u8f83\u3002\u5982\u679c\u6bd4\u8f83\u7ed3\u679c\u4e3a\u771f\uff0c\u5c06\u6253\u5370\u4e00\u6761\u6d88\u606f\u3002<\/p>\n
    \u5176\u4ed6\u7528\u6cd5<\/strong><\/p>\n
    \u9664\u4e86\u6bd4\u8f83\u5355\u4e2a\u5143\u7d20\u5916\uff0c\u6570\u7ec4\u8fd8\u53ef\u4ee5\u7528\u4e8e\u68c0\u67e5\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n
      \n
    •  \u662f\u5426\u5b58\u5728\u7279\u5b9a\u5143\u7d20<\/strong>\uff1aif (array.contns(value))<\/li>\n
    •  \u6570\u7ec4\u662f\u5426\u4e3a\u7a7a<\/strong>\uff1aif (array.length == 0)<\/li>\n
    •  \u6570\u7ec4\u662f\u5426\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6<\/strong>\uff1aif (Arrays.stream(array).allMatch(element -> element > 0))<\/li>\n<\/ul>\n
      \u4ee5\u4e0a\u5c31\u662fJava\u4e2d\u6570\u7ec4\u600e\u4e48\u5728if\u4e2d\u8868\u8fbe\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
      java \u4e2d\u6570\u7ec4\u5e94\u7528\u4e8e if \u8bed\u53e5\uff1a\u8bed\u6cd5\uff1aif (array[index] == value) {…}\u5b9a\u4e49\u6570\u7ec4\u5e76\u8d4b\u503c\u3002\u83b7\u53d6\u6570\u7ec4\u5143\u7d20\u3002\u6bd4\u8f83\u5143\u7d20\u503c\u3002\u6ee1\u8db3\u6761\u4ef6\u65f6\u6267\u884c\u8bed\u53e5\u5757\u3002 Java\u4e2d\u6570\u7ec4\u5728if\u8bed\u53e5\u4e2d\u7684\u8868\u793a\u65b9\u6cd5 \u6982\u8ff0 \u5728Java\u4e2d\uff0c\u6570\u7ec4\u53ef\u4ee5\u7528\u4f5cif\u8bed\u53e5\u7684\u6761\u4ef6\u3002\u6570\u7ec4\u7684\u5143\u7d20\u503c\u53ef\u4ee5\u7528\u6765\u63a7\u5236\u8bed\u53e5\u7684\u6267\u884c\u6d41\u7a0b\u3002 \u8bed\u6cd5 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u6570\u7ec4\u5728if\u8bed\u53e5\u4e2d\u7684\u8bed\u6cd5\u683c\u5f0f\u5982\u4e0b\uff1a if (array[index] == value) { \/\/ \u8bed\u53e5\u5757 } \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff0carray \u662f\u6570\u7ec4\u53d8\u91cf\uff0cindex \u662f\u6570\u7ec4\u7d22\u5f15\uff0cvalue \u662f\u8981\u6bd4\u8f83\u7684\u503c\u3002 \u4f7f\u7528\u65b9\u6cd5 \u8981\u4f7f\u7528\u6570\u7ec4\u5728if\u8bed\u53e5\u4e2d\uff0c\u9700\u8981\u6267\u884c\u4ee5\u4e0b\u6b65\u9aa4\uff1a \u5b9a\u4e49\u6570\u7ec4\u53d8\u91cf\uff1a\u58f0\u660e\u4e00\u4e2a\u6570\u7ec4\u53d8\u91cf\u5e76\u521d\u59cb\u5316\u5143\u7d20\u503c\u3002 \u83b7\u53d6\u6570\u7ec4\u5143\u7d20\uff1a\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u8bbf\u95ee\u7279\u5b9a\u5143\u7d20\u7684\u503c\u3002 \u6bd4\u8f83\u5143\u7d20\u503c\uff1a\u5c06\u6570\u7ec4\u5143\u7d20\u503c\u4e0e\u7ed9\u5b9a\u7684\u503c\u8fdb\u884c\u6bd4\u8f83\u3002 \u6267\u884c\u8bed\u53e5\u5757\uff1a\u5982\u679c\u6bd4\u8f83\u7ed3\u679c\u4e3a\u771f\uff0c\u6267\u884cif\u8bed\u53e5\u5757\u5185\u7684\u8bed\u53e5\u3002 \u793a\u4f8b \u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528\u6570\u7ec4\u5728if\u8bed\u53e5\u4e2d\u7684\u793a\u4f8b\uff1a int[] numbers = {1, 2, 3, 4, 5}; if (numbers[2] == 3) { System.out.println(“\u6570\u7ec4\u7684\u7b2c\u4e09\u4e2a\u5143\u7d20\u4e3a 3”); } \u767b\u5f55\u540e\u590d\u5236 \u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cnumbers \u662f\u4e00\u4e2a\u6574\u578b\u6570\u7ec4\uff0cnumbers[2] \u83b7\u53d6\u6570\u7ec4\u7684\u7b2c\u4e09\u4e2a\u5143\u7d20\uff0c\u5e76\u5c06\u5176\u4e0e\u503c […]<\/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-64245","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64245","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=64245"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64245\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64245"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64245"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64245"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}