{"id":36882,"date":"2024-11-26T10:58:10","date_gmt":"2024-11-26T02:58:10","guid":{"rendered":"https:\/\/fwq.ai\/blog\/36882\/"},"modified":"2024-11-26T10:58:10","modified_gmt":"2024-11-26T02:58:10","slug":"object%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e7%94%a8java","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/36882\/","title":{"rendered":"object\u6570\u7ec4\u600e\u4e48\u7528JAVA"},"content":{"rendered":"

\n object \u6570\u7ec4\u662f\u4e00\u79cd java \u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u4e0d\u540c\u6570\u636e\u7c7b\u578b\u7684\u5143\u7d20\u3002\u521b\u5efa object \u6570\u7ec4\u65f6\uff0c\u9700\u8981\u6307\u5b9a\u5176\u5927\u5c0f\u3002\u53ef\u901a\u8fc7 array_name[index] = element \u6dfb\u52a0\u5143\u7d20\u3002\u4f7f\u7528 array_name[index] \u8bbf\u95ee\u5143\u7d20\u3002object \u6570\u7ec4\u53ef\u5bb9\u7eb3\u4efb\u4f55\u5bf9\u8c61\uff0c\u5305\u62ec\u5b50\u7c7b\u548c\u533f\u540d\u7c7b\uff0c\u5176\u5143\u7d20\u53ef\u4e3a null\u3002\n<\/p><\/blockquote>\n

\"object\u6570\u7ec4\u600e\u4e48\u7528JAVA\u63d2\u56fe\"<\/p>\n

Object \u6570\u7ec4\u5728 Java \u4e2d\u7684\u4f7f\u7528<\/strong><\/p>\n

\u4ec0\u4e48\u662f Object \u6570\u7ec4\uff1f<\/strong><\/p>\n

Object \u6570\u7ec4\u662f\u4e00\u79cd\u53ef\u4ee5\u5b58\u50a8\u4efb\u4f55\u6570\u636e\u7c7b\u578b\u7684 Java \u6570\u636e\u7ed3\u6784\u3002\u5b83\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u5305\u542b\u5f15\u7528\u5404\u5143\u7d20\u7684\u5f15\u7528\u6307\u9488\u7684\u6570\u7ec4\u3002<\/p>\n

\u5982\u4f55\u521b\u5efa Object \u6570\u7ec4\uff1f<\/strong><\/p>\n

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

\u521b\u5efa Object \u6570\u7ec4\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

Object[] array_name = new Object[size];<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6dfb\u52a0\u5143\u7d20<\/strong><\/p>\n
\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u5411 Object \u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\uff1a<\/p>\n
array_name[index] = element;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8bbf\u95ee\u5143\u7d20<\/strong><\/p>\n
\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff1a<\/p>\n
Object element = array_name[index];<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f7f\u7528\u793a\u4f8b<\/strong><\/p>\n
\u521b\u5efa\u4e00\u4e2a\u5b58\u50a8\u4e0d\u540c\u6570\u636e\u7c7b\u578b\u7684 Object \u6570\u7ec4\uff1a<\/p>\n
Object[] array = new Object[4];\narray[0] = \"Hello\";\narray[1] = 100;\narray[2] = true;\narray[3] = new int[]{1, 2, 3};<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u904d\u5386 Object \u6570\u7ec4\u5e76\u6253\u5370\u5176\u5143\u7d20\uff1a<\/p>\n
for (Object element : array) {\n  System.out.println(element);\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8f93\u51fa\uff1a<\/p>\n
Hello\n100\ntrue\n[1, 2, 3]<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6ce8\u610f\uff1a<\/strong><\/p>\n
    \n
  • Object \u6570\u7ec4\u53ef\u4ee5\u5bb9\u7eb3\u4efb\u4f55\u7c7b\u578b\u7684\u5bf9\u8c61\uff0c\u5305\u62ec\u5b50\u7c7b\u548c\u533f\u540d\u7c7b\u3002<\/li>\n
  • Object \u6570\u7ec4\u7684\u5143\u7d20\u53ef\u4ee5\u662f null\u3002<\/li>\n
  • \u7531\u4e8e Java \u7684\u7c7b\u578b\u64e6\u9664\uff0c\u5728\u7f16\u8bd1\u65f6\u65e0\u6cd5\u786e\u5b9a Object \u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u5b9e\u9645\u7c7b\u578b\u3002<\/li>\n
  • \u53ef\u4ee5\u4f7f\u7528 Class \u5bf9\u8c61\u6765\u786e\u5b9a\u5143\u7d20\u7684\u8fd0\u884c\u65f6\u7c7b\u578b\u3002<\/li>\n<\/ul>\n
    \u4ee5\u4e0a\u5c31\u662fobject\u6570\u7ec4\u600e\u4e48\u7528JAVA\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    object \u6570\u7ec4\u662f\u4e00\u79cd java \u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u4e0d\u540c\u6570\u636e\u7c7b\u578b\u7684\u5143\u7d20\u3002\u521b\u5efa object \u6570\u7ec4\u65f6\uff0c\u9700\u8981\u6307\u5b9a\u5176\u5927\u5c0f\u3002\u53ef\u901a\u8fc7 array_name[index] = element \u6dfb\u52a0\u5143\u7d20\u3002\u4f7f\u7528 array_name[index] \u8bbf\u95ee\u5143\u7d20\u3002object \u6570\u7ec4\u53ef\u5bb9\u7eb3\u4efb\u4f55\u5bf9\u8c61\uff0c\u5305\u62ec\u5b50\u7c7b\u548c\u533f\u540d\u7c7b\uff0c\u5176\u5143\u7d20\u53ef\u4e3a null\u3002 Object \u6570\u7ec4\u5728 Java \u4e2d\u7684\u4f7f\u7528 \u4ec0\u4e48\u662f Object \u6570\u7ec4\uff1f Object \u6570\u7ec4\u662f\u4e00\u79cd\u53ef\u4ee5\u5b58\u50a8\u4efb\u4f55\u6570\u636e\u7c7b\u578b\u7684 Java \u6570\u636e\u7ed3\u6784\u3002\u5b83\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u5305\u542b\u5f15\u7528\u5404\u5143\u7d20\u7684\u5f15\u7528\u6307\u9488\u7684\u6570\u7ec4\u3002 \u5982\u4f55\u521b\u5efa Object \u6570\u7ec4\uff1f \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u521b\u5efa Object \u6570\u7ec4\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a Object[] array_name = new Object[size]; \u767b\u5f55\u540e\u590d\u5236 \u6dfb\u52a0\u5143\u7d20 \u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u5411 Object \u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\uff1a array_name[index] = element; \u767b\u5f55\u540e\u590d\u5236 \u8bbf\u95ee\u5143\u7d20 \u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff1a Object element = array_name[index]; \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528\u793a\u4f8b \u521b\u5efa\u4e00\u4e2a\u5b58\u50a8\u4e0d\u540c\u6570\u636e\u7c7b\u578b\u7684 […]<\/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-36882","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36882","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=36882"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36882\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=36882"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=36882"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=36882"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}