{"id":65422,"date":"2025-05-03T09:22:13","date_gmt":"2025-05-03T01:22:13","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65422\/"},"modified":"2025-05-03T09:22:13","modified_gmt":"2025-05-03T01:22:13","slug":"java-float%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e5%86%99-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65422\/","title":{"rendered":"java float\u6570\u7ec4\u600e\u4e48\u5199"},"content":{"rendered":"

\n java \u4e2d\u7684 float \u6570\u7ec4\u7528\u4e8e\u5b58\u50a8\u6d6e\u70b9\u6570\u503c\u3002\u8981\u521b\u5efa float \u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u8bed\u6cd5\uff1afloat[] myarray = new float[size]\u3002\u5176\u4e2d\uff0cmyarray \u662f\u6570\u7ec4\u540d\u79f0\uff0cnew \u8fd0\u7b97\u7b26\u521b\u5efa\u65b0\u6570\u7ec4\uff0cfloat \u6307\u5b9a\u5143\u7d20\u7c7b\u578b\u4e3a\u6d6e\u70b9\u6570\uff0csize \u6307\u5b9a\u6570\u7ec4\u5927\u5c0f\u3002\u53ef\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u8bbf\u95ee\u5143\u7d20\uff0c\u4f8b\u5982 float firstelement = myarray[0]\u3002\u901a\u8fc7\u6570\u7ec4\u7d22\u5f15\u4e5f\u53ef\u4fee\u6539\u5143\u7d20\u503c\uff0c\u4f8b\u5982 myarray[0] = 10.0f\u3002\u6570\u7ec4\u957f\u5ea6\u53ef\u901a\u8fc7 length \u5c5e\u6027\u83b7\u53d6\u3002\n<\/p><\/blockquote>\n

\"java<\/p>\n

Java float \u6570\u7ec4\u7684\u7f16\u5199<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0cfloat \u6570\u7ec4\u7528\u4e8e\u5b58\u50a8\u6d6e\u70b9\u6570\u503c\u3002\u8981\u521b\u5efa float \u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n

float[] myArray = new float[size];<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5176\u4e2d\uff1a<\/p>\n
    \n
  • myArray \u662f\u6570\u7ec4\u7684\u540d\u79f0\u3002<\/li>\n
  • new \u8fd0\u7b97\u7b26\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u6570\u7ec4\u5bf9\u8c61\u3002<\/li>\n
  • float \u6307\u5b9a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u7c7b\u578b\u4e3a\u6d6e\u70b9\u6570\u3002<\/li>\n
  • size \u6307\u5b9a\u6570\u7ec4\u7684\u5927\u5c0f\uff0c\u5373\u53ef\u4ee5\u5bb9\u7eb3\u7684\u5143\u7d20\u6570\u91cf\u3002<\/li>\n<\/ul>\n
    \u793a\u4f8b<\/strong><\/p>\n
    \u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
    \u521b\u5efa\u5e76\u521d\u59cb\u5316\u4e00\u4e2a\u5305\u542b 5 \u4e2a\u6d6e\u70b9\u6570\u7684\u6570\u7ec4\uff1a<\/p>\n
    float[] myArray = new float[] {1.2f, 3.4f, 5.6f, 7.8f, 9.0f};<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n
    \u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u6765\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff1a<\/p>\n
    float firstElement = myArray[0];<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u5176\u4e2d\uff1a<\/p>\n
      \n
    • myArray[0] \u8868\u793a\u6570\u7ec4\u4e2d\u7b2c\u4e00\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u3002<\/li>\n
    • firstElement \u4fdd\u5b58\u7b2c\u4e00\u4e2a\u5143\u7d20\u7684\u503c\u3002<\/li>\n<\/ul>\n
      \u4fee\u6539\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n
      \u53ef\u4ee5\u901a\u8fc7\u6570\u7ec4\u7d22\u5f15\u6765\u4fee\u6539\u6570\u7ec4\u5143\u7d20\u7684\u503c\uff1a<\/p>\n
      myArray[0] = 10.0f;<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u6570\u7ec4\u957f\u5ea6<\/strong><\/p>\n
      \u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\uff1a<\/p>\n
      int length = myArray.length;<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u4ee5\u4e0a\u5c31\u662fjava float\u6570\u7ec4\u600e\u4e48\u5199\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\u7684 float \u6570\u7ec4\u7528\u4e8e\u5b58\u50a8\u6d6e\u70b9\u6570\u503c\u3002\u8981\u521b\u5efa float \u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u8bed\u6cd5\uff1afloat[] myarray = new float[size]\u3002\u5176\u4e2d\uff0cmyarray \u662f\u6570\u7ec4\u540d\u79f0\uff0cnew \u8fd0\u7b97\u7b26\u521b\u5efa\u65b0\u6570\u7ec4\uff0cfloat \u6307\u5b9a\u5143\u7d20\u7c7b\u578b\u4e3a\u6d6e\u70b9\u6570\uff0csize \u6307\u5b9a\u6570\u7ec4\u5927\u5c0f\u3002\u53ef\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u8bbf\u95ee\u5143\u7d20\uff0c\u4f8b\u5982 float firstelement = myarray[0]\u3002\u901a\u8fc7\u6570\u7ec4\u7d22\u5f15\u4e5f\u53ef\u4fee\u6539\u5143\u7d20\u503c\uff0c\u4f8b\u5982 myarray[0] = 10.0f\u3002\u6570\u7ec4\u957f\u5ea6\u53ef\u901a\u8fc7 length \u5c5e\u6027\u83b7\u53d6\u3002 Java float \u6570\u7ec4\u7684\u7f16\u5199 \u5728 Java \u4e2d\uff0cfloat \u6570\u7ec4\u7528\u4e8e\u5b58\u50a8\u6d6e\u70b9\u6570\u503c\u3002\u8981\u521b\u5efa float \u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a float[] myArray = new float[size]; \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a myArray \u662f\u6570\u7ec4\u7684\u540d\u79f0\u3002 new \u8fd0\u7b97\u7b26\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u6570\u7ec4\u5bf9\u8c61\u3002 float \u6307\u5b9a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u7c7b\u578b\u4e3a\u6d6e\u70b9\u6570\u3002 size \u6307\u5b9a\u6570\u7ec4\u7684\u5927\u5c0f\uff0c\u5373\u53ef\u4ee5\u5bb9\u7eb3\u7684\u5143\u7d20\u6570\u91cf\u3002 \u793a\u4f8b \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u521b\u5efa\u5e76\u521d\u59cb\u5316\u4e00\u4e2a\u5305\u542b 5 \u4e2a\u6d6e\u70b9\u6570\u7684\u6570\u7ec4\uff1a float[] myArray = […]<\/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-65422","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65422","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=65422"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65422\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65422"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65422"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65422"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}