{"id":11604,"date":"2023-08-07T22:22:06","date_gmt":"2023-08-07T14:22:06","guid":{"rendered":"http:\/\/92it.top\/?p=11604"},"modified":"2023-08-07T22:22:06","modified_gmt":"2023-08-07T14:22:06","slug":"object%e7%ae%80%e4%bb%8b","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=11604","title":{"rendered":"Object\u7b80\u4ecb"},"content":{"rendered":"\n<p><strong>1. \u7b80\u4ecb<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u5728\u4e86\u89e3Object\u4e2d\u7684\u5e38\u7528\u65b9\u6cd5\u4e4b\u524d\uff0c\u6211\u4eec\u5148\u6765\u770b\u770bObject\u7c7b\u7684\u6e90\u7801\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-1024x602.png\" alt=\"\" class=\"wp-image-11605\" width=\"528\" height=\"310\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-1024x602.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-300x176.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-768x452.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-830x488.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-230x135.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-350x206.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-480x282.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image.png 1258w\" sizes=\"(max-width: 528px) 100vw, 528px\" \/><\/figure><\/div>\n\n\n\n<p>\u4eceObject\u7c7b\u7684\u6e90\u7801\u6ce8\u91ca\u53ef\u4ee5\u77e5\u9053\uff0cObject\u7c7b\u662fJava\u4e2d\u6240\u6709\u7c7b\u7684\u7236\u7c7b\uff0c\u76f8\u5f53\u4e8e\u662fJava\u4e2d\u7684\u201d\u4e07\u7c7b\u4e4b\u738b\u201c\uff0c\u5904\u4e8e\u6700\u9876\u5c42\u3002\u6240\u4ee5\u5728Java\u4e2d\uff0c\u6240\u6709\u7684\u7c7b\u9ed8\u8ba4\u90fd\u7ee7\u627f\u81eaObject\u7c7b\u3002\u540c\u65f6Java\u4e2d\u7684\u6240\u6709\u7c7b\u5bf9\u8c61\uff0c\u5305\u62ec\u6570\u7ec4\uff0c\u4e5f\u90fd\u8981\u5b9e\u73b0\u8fd9\u4e2a\u7c7b\u4e2d\u7684\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\uff0cObject\u662fJava\u4e2d\u6240\u6709\u7c7b\u7684\u7236\u7c7b\u3001\u8d85\u7c7b\u3001\u57fa\u7c7b\uff0c\u4f4d\u4e8e\u7ee7\u627f\u6811\u7684\u6700\u9876\u5c42\u3002\u53ef\u4ee5\u8bf4\uff0c\u4efb\u4f55\u4e00\u4e2a\u6ca1\u6709\u663e\u5f0f\u5730\u7ee7\u627f\u522b\u7684\u7236\u7c7b\u7684\u7c7b\uff0c\u90fd\u4f1a\u76f4\u63a5\u7ee7\u627fObject\uff0c\u5426\u5219\u5c31\u662f\u95f4\u63a5\u5730\u7ee7\u627fObject\uff0c\u5e76\u4e14\u4efb\u4f55\u4e00\u4e2a\u7c7b\u4e5f\u90fd\u4f1a\u4eab\u6709Object\u63d0\u4f9b\u7684\u65b9\u6cd5\u3002\u53c8\u56e0\u4e3aObject\u662f\u6240\u6709\u7c7b\u7684\u7236\u7c7b\uff0c\u6240\u4ee5\u57fa\u4e8e\u591a\u6001\u7684\u7279\u6027\uff0c\u8be5\u7c7b\u53ef\u4ee5\u7528\u6765\u4ee3\u8868\u4efb\u4f55\u4e00\u4e2a\u7c7b\uff0c\u5141\u8bb8\u628a\u4efb\u4f55\u7c7b\u578b\u7684\u5bf9\u8c61\u8d4b\u7ed9 Object\u7c7b\u578b\u7684\u53d8\u91cf\uff0c\u4e5f\u53ef\u4ee5\u4f5c\u4e3a\u65b9\u6cd5\u7684\u53c2\u6570\u3001\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-1-1024x482.png\" alt=\"\" class=\"wp-image-11606\" width=\"497\" height=\"233\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-1-1024x482.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-1-300x141.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-1-768x361.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-1-830x391.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-1-230x108.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-1-350x165.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-1-480x226.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-1.png 1118w\" sizes=\"(max-width: 497px) 100vw, 497px\" \/><\/figure><\/div>\n\n\n\n<p><strong>\u4e8c. \u5e38\u7528\u65b9\u6cd5<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u5728Object\u7c7b\u4e2d\uff0c\u81ea\u5e26\u4e86\u51e0\u4e2a\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u8fd9\u51e0\u4e2a\u65b9\u6cd5\u4efb\u610f\u7684\u5b50\u7c7b\u90fd\u4f1a\u7ee7\u627f\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-2-1024x600.png\" alt=\"\" class=\"wp-image-11607\" width=\"506\" height=\"296\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-2-1024x600.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-2-300x176.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-2-768x450.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-2-830x486.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-2-230x135.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-2-350x205.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-2-480x281.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-2.png 1298w\" sizes=\"(max-width: 506px) 100vw, 506px\" \/><\/figure><\/div>\n\n\n\n<p><strong>\u6839\u636e\u4e0a\u56fe\uff0c\u6211\u4eec\u628aObject\u7c7b\u4e2d\u7684\u5e38\u7528\u65b9\u6cd5\u5f52\u7eb3\u4e3a\u8fd9\u4e48\u51e0\u79cd\uff1a<\/strong><\/p>\n\n\n\n<ul><li>1. \u6784\u9020\u65b9\u6cd5\uff1b<\/li><li>2. hashCode()\u548cequals()\u65b9\u6cd5\u7528\u6765\u5224\u65ad\u5bf9\u8c61\u662f\u5426\u76f8\u540c\uff1b<\/li><li>3. wait()\u3001wait(long)\u3001wait(long,int)\u3001notify()\u3001notifyAll()\uff1b<\/li><li>4. toString()\u548cgetClass();<\/li><li>5. clone();<\/li><li>6. finalize()<\/li><\/ul>\n\n\n\n<p>\u63a5\u4e0b\u6765\u5c31\u7ed9\u5404\u4f4d\u4ecb\u7ecdObject\u7c7b\u4e2d\u7684\u51e0\u4e2a\u5e38\u7528\u65b9\u6cd5\uff0c<strong>\u5206\u522b\u8bf4\u4e00\u4e0b\u8fd9\u4e9b\u65b9\u6cd5\u7684\u529f\u80fd\u4f5c\u7528\u3002<\/strong><\/p>\n\n\n\n<p><strong>1. clone()\u65b9\u6cd5<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><strong>1.1 clone\u65b9\u6cd5\u4f5c\u7528<\/strong><\/p>\n\n\n\n<p>Object\u4e2d\u6709\u4e24\u4e2aprotected\u4fee\u9970\u7684\u65b9\u6cd5\uff0c\u5176\u4e2d\u4e00\u4e2a\u5c31\u662fclone()\u65b9\u6cd5\uff0c\u5e76\u4e14\u8be5\u65b9\u6cd5\u8fd8\u662f\u4e00\u4e2anative\u65b9\u6cd5\u3002clone()\u65b9\u6cd5\u7528\u4e8e\u521b\u5efa\u590d\u5236\u51fa\u5f53\u524d\u7c7b\u5bf9\u8c61\u7684\u4e00\u4e2a\u526f\u672c\uff0c\u5f97\u5230\u4e00\u4e2a\u590d\u5236\u5bf9\u8c61\u3002\u6240\u8c13\u7684\u590d\u5236\u5bf9\u8c61\uff0c\u9996\u5148\u4f1a\u5206\u914d\u4e00\u4e2a\u548c\u6e90\u5bf9\u8c61(\u8c03\u7528clone\u65b9\u6cd5\u7684\u5bf9\u8c61)\u540c\u6837\u5927\u5c0f\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u5728\u8fd9\u4e2a\u5185\u5b58\u7a7a\u95f4\u4e2d\u4f1a\u521b\u5efa\u51fa\u4e00\u4e2a\u65b0\u5bf9\u8c61\uff1b\u7136\u540e\u518d\u4f7f\u7528\u6e90\u5bf9\u8c61\u4e2d\u5bf9\u5e94\u7684\u5404\u4e2a\u6210\u5458\uff0c\u586b\u5145\u65b0\u5bf9\u8c61\u7684\u6210\u5458\uff0c\u586b\u5145\u5b8c\u6210\u4e4b\u540e\uff0cclone\u65b9\u6cd5\u4f1a\u521b\u5efa\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u76f8\u540c\u5bf9\u8c61\u4f9b\u5916\u90e8\u5f15\u7528\u3002<\/p>\n\n\n\n<p><strong>1.2 clone\u6e90\u7801\u5206\u6790<\/strong><\/p>\n\n\n\n<p>\u6211\u4eec\u518d\u770b\u770bclone()\u65b9\u6cd5\u6e90\u7801\u4e0a\u7684\u6ce8\u91ca\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<br><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-3-1024x566.png\" alt=\"\" class=\"wp-image-11608\" width=\"536\" height=\"296\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-3-1024x566.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-3-300x166.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-3-768x425.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-3-830x459.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-3-230x127.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-3-350x194.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-3-480x265.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-3.png 1302w\" sizes=\"(max-width: 536px) 100vw, 536px\" \/><\/figure><\/div>\n\n\n\n<p>\u4ece\u8fd9\u6bb5\u6ce8\u91ca\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4e86\u89e3\u5230\uff1a<\/p>\n\n\n\n<p>1. \u4ee5x\u4e3a\u84dd\u672c\u521b\u5efa\u51fa\u7684\u526f\u672c\uff0c\u4e0ex\u5bf9\u8c61\u5e76\u4e0d\u76f8\u540c\uff0c\u8fd9\u4fdd\u8bc1\u4e86\u514b\u9686\u51fa\u7684\u5bf9\u8c61\u62e5\u6709\u5355\u72ec\u7684\u5185\u5b58\u7a7a\u95f4\uff1b<\/p>\n\n\n\n<p>2. \u6e90\u5bf9\u8c61\u548c\u514b\u9686\u7684\u65b0\u5bf9\u8c61\u5b57\u8282\u7801\u76f8\u540c\uff0c\u5b83\u4eec\u5177\u6709\u76f8\u540c\u7684\u7c7b\u7c7b\u578b\uff0c\u4f46\u8fd9\u5e76\u4e0d\u662f\u5f3a\u5236\u6027\u7684\uff1b<\/p>\n\n\n\n<p>3. \u6e90\u5bf9\u8c61\u548c\u514b\u9686\u7684\u65b0\u5bf9\u8c61\u5229\u7528equals()\u65b9\u6cd5\u6bd4\u8f83\u65f6\u662f\u76f8\u540c\u7684\uff0c\u4f46\u8fd9\u4e5f\u4e0d\u662f\u5f3a\u5236\u6027\u7684\u3002<\/p>\n\n\n\n<p><strong>1.3 Java\u7684\u6d45\u514b\u9686\u4e0e\u6df1\u514b\u9686<\/strong><\/p>\n\n\n\n<p>\u56e0\u4e3a\u6bcf\u4e2a\u7c7b\u7684\u76f4\u63a5\u6216\u95f4\u63a5\u7236\u7c7b\u90fd\u662fObject\uff0c\u56e0\u6b64\u5b83\u4eec\u90fd\u542b\u6709clone()\u65b9\u6cd5\uff0c\u4f46\u56e0\u8be5\u65b9\u6cd5\u662fprotected\u4fee\u9970\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u4e0d\u80fd\u5728\u7c7b\u5916\u8bbf\u95ee\u8be5\u65b9\u6cd5\u3002\u4f46\u5982\u679c\u6211\u4eec\u8981\u5bf9\u4e00\u4e2a\u5bf9\u8c61\u8fdb\u884c\u590d\u5236\uff0c\u53ef\u4ee5\u5bf9clone\u65b9\u6cd5\u8fdb\u884c\u590d\u5199\uff0c\u800cJava\u4e2d\u63d0\u4f9b\u4e86\u4e24\u79cd\u4e0d\u540c\u7684\u514b\u9686\u65b9\u5f0f\uff0c\u6d45\u514b\u9686(ShallowClone)\u548c\u6df1\u514b\u9686(DeepClone)\u3002<\/p>\n\n\n\n<p><strong>1.3.1 \u6d45\u514b\u9686<\/strong><\/p>\n\n\n\n<p>\u5728\u6d45\u514b\u9686\u4e2d\uff0c\u5982\u679c\u6e90\u5bf9\u8c61\u7684\u6210\u5458\u53d8\u91cf\u662f\u503c\u7c7b\u578b\uff0c\u5219\u590d\u5236\u4e00\u4efd\u7ed9\u514b\u9686\u5bf9\u8c61\uff1b\u5982\u679c\u6e90\u5bf9\u8c61\u7684\u6210\u5458\u53d8\u91cf\u662f\u5f15\u7528\u7c7b\u578b\uff0c\u5219\u5c06\u5f15\u7528\u5bf9\u8c61\u7684\u5730\u5740\u590d\u5236\u4e00\u4efd\u7ed9\u514b\u9686\u5bf9\u8c61\uff0c\u4e5f\u5c31\u662f\u8bf4\u6e90\u5bf9\u8c61\u548c\u514b\u9686\u5bf9\u8c61\u7684\u6210\u5458\u53d8\u91cf\u6307\u5411\u76f8\u540c\u7684\u5185\u5b58\u5730\u5740\u3002<\/p>\n\n\n\n<p>\u7b80\u5355\u8bf4\uff0c\u5728\u6d45\u514b\u9686\u4e2d\uff0c\u5f53\u5bf9\u8c61\u88ab\u590d\u5236\u65f6\u53ea\u590d\u5236\u5b83\u672c\u8eab\u548c\u5176\u4e2d\u5305\u542b\u7684\u503c\u7c7b\u578b\u7684\u6210\u5458\u53d8\u91cf\uff0c\u800c\u5f15\u7528\u7c7b\u578b\u7684\u6210\u5458\u5bf9\u8c61\u5e76\u6ca1\u6709\u590d\u5236\u3002\u6211\u4eec\u53ef\u4ee5\u7528\u4e0b\u56fe\u5bf9\u6d45\u514b\u9686\u8fdb\u884c\u5c55\u793a\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-4.png\" alt=\"\" class=\"wp-image-11609\" width=\"345\" height=\"200\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-4.png 688w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-4-300x174.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-4-230x133.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-4-350x202.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-4-480x278.png 480w\" sizes=\"(max-width: 345px) 100vw, 345px\" \/><\/figure><\/div>\n\n\n\n<p>\u5728Java\u8bed\u8a00\u4e2d\uff0c\u901a\u8fc7\u5b9e\u73b0Cloneable\u63a5\u53e3\uff0c\u9ed8\u8ba4\u8986\u76d6Object\u7c7b\u7684clone()\u65b9\u6cd5\u5c31\u53ef\u4ee5\u5b9e\u73b0\u6d45\u514b\u9686\u3002<\/p>\n\n\n\n<p><strong>1.3.2 \u6df1\u514b\u9686<\/strong><\/p>\n\n\n\n<p>\u5728\u6df1\u514b\u9686\u4e2d\uff0c\u65e0\u8bba\u6e90\u5bf9\u8c61\u7684\u6210\u5458\u53d8\u91cf\u662f\u503c\u7c7b\u578b\u8fd8\u662f\u5f15\u7528\u7c7b\u578b\uff0c\u90fd\u5c06\u590d\u5236\u4e00\u4efd\u7ed9\u514b\u9686\u5bf9\u8c61\uff0c\u5373\u6df1\u514b\u9686\u5c06\u6e90\u5bf9\u8c61\u7684\u6240\u6709\u5f15\u7528\u5bf9\u8c61\u4e5f\u590d\u5236\u4e00\u4efd\u7ed9\u514b\u9686\u5bf9\u8c61\u3002<\/p>\n\n\n\n<p>\u7b80\u5355\u6765\u8bf4\uff0c\u5728\u6df1\u514b\u9686\u4e2d\uff0c\u9664\u4e86\u5bf9\u8c61\u672c\u8eab\u88ab\u590d\u5236\u5916\uff0c\u5bf9\u8c61\u4e2d\u5305\u542b\u7684\u6240\u6709\u6210\u5458\u53d8\u91cf\u4e5f\u5c06\u590d\u5236\u3002\u6211\u4eec\u53ef\u4ee5\u7528\u4e0b\u56fe\u5bf9\u6df1\u514b\u9686\u8fdb\u884c\u5c55\u793a\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-5.png\" alt=\"\" class=\"wp-image-11610\" width=\"424\" height=\"241\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-5.png 714w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-5-300x171.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-5-230x131.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-5-350x199.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-5-480x273.png 480w\" sizes=\"(max-width: 424px) 100vw, 424px\" \/><\/figure><\/div>\n\n\n\n<p>\u5728Java\u8bed\u8a00\u4e2d\uff0c\u5982\u679c\u9700\u8981\u5b9e\u73b0\u6df1\u514b\u9686\uff0c\u53ef\u4ee5\u901a\u8fc7\u5b9e\u73b0Cloneable\u63a5\u53e3\uff0c\u81ea\u5b9a\u4e49\u8986\u76d6Object\u7c7b\u7684clone()\u65b9\u6cd5\u5b9e\u73b0\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u5e8f\u5217\u5316(Serialization)\u7b49\u65b9\u5f0f\u6765\u5b9e\u73b0\u3002\u5982\u679c\u5f15\u7528\u7c7b\u578b\u91cc\u9762\u8fd8\u5305\u542b\u5f88\u591a\u5f15\u7528\u7c7b\u578b\uff0c\u6216\u8005\u5185\u5c42\u5f15\u7528\u7c7b\u578b\u7684\u7c7b\u91cc\u9762\u53c8\u5305\u542b\u5f15\u7528\u7c7b\u578b\uff0c\u4f7f\u7528clone\u65b9\u6cd5\u5c31\u4f1a\u5f88\u9ebb\u70e6\u3002\u8fd9\u65f6\u6211\u4eec\u53ef\u4ee5\u7528\u5e8f\u5217\u5316\u7684\u65b9\u5f0f\u6765\u5b9e\u73b0\u5bf9\u8c61\u7684\u6df1\u514b\u9686\u3002<\/p>\n\n\n\n<p><strong>2. hashCode()\u65b9\u6cd5<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><strong>2.1 \u7b80\u4ecb<\/strong><\/p>\n\n\n\n<p>hashCode()\u662fObject\u4e2d\u7684\u4e00\u4e2anative\u65b9\u6cd5\uff0c\u4e5f\u662f\u6240\u6709\u7c7b\u90fd\u62e5\u6709\u7684\u4e00\u4e2a\u65b9\u6cd5\uff0c\u4e3b\u8981\u662f\u8fd4\u56de\u6bcf\u4e2a\u5bf9\u8c61\u5341\u8fdb\u5236\u7684hash\u503c\u3002hash\u503c\u662f\u7531hash\u7b97\u6cd5\u6839\u636e\u5bf9\u8c61\u7684\u5730\u5740\u3001\u5bf9\u8c61\u4e2d\u7684\u5b57\u7b26\u4e32\u3001\u6570\u5b57\u7b49\u8ba1\u7b97\u51fa\u6765\u7684\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u76f8\u540c\u7684\u5bf9\u8c61\u5e94\u4f1a\u8fd4\u56de\u76f8\u540c\u7684\u54c8\u5e0c\u5417\u503c\uff0c\u4e0d\u540c\u7684\u5bf9\u8c61\u4f1a\u8fd4\u56de\u4e0d\u540c\u7684\u54c8\u5e0c\u7801\u503c\u3002<\/p>\n\n\n\n<p><strong>2.2 hash\u503c<\/strong><\/p>\n\n\n\n<p>\u54c8\u5e0c\u503c\u662f\u6839\u636e\u5730\u5740\u503c\u6362\u7b97\u51fa\u6765\u7684\u4e00\u4e2a\u503c\uff0c\u5e76\u4e0d\u662f\u5b9e\u9645\u7684\u5730\u5740\u503c\uff0c\u5e38\u7528\u4e8e\u54c8\u5e0c\u8868\u4e2d\uff0c\u5982HashMap\u3001HashTable\u3001HashSet\u3002\u5173\u4e8e\u54c8\u5e0c\u503c\uff0c\u4e0d\u540c\u7684JDK\u7b97\u6cd5\u5176\u5b9e\u662f\u4e0d\u4e00\u6837\u7684\uff1a<\/p>\n\n\n\n<ul><li><strong>Java 6\u30017 \u4e2d\u4f1a\u9ed8\u8ba4\u8fd4\u56de\u4e00\u4e2a\u968f\u673a\u6570\uff1b<\/strong><\/li><li><strong>Java 8 \u4e2d\u9ed8\u8ba4\u901a\u8fc7\u548c\u5f53\u524d\u7ebf\u7a0b\u6709\u5173\u7684\u4e00\u4e2a\u968f\u673a\u6570 + \u4e09\u4e2a\u786e\u5b9a\u503c\uff0c\u8fd0\u7528Marsaglia\u2019s xorshift scheme\u7684\u968f\u673a\u6570\u7b97\u6cd5\u5f97\u5230\u7684\u4e00\u4e2a\u968f\u673a\u6570\u3002<\/strong><\/li><\/ul>\n\n\n\n<p><strong>2.3 \u6848\u4f8b<\/strong><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-6-1024x295.png\" alt=\"\" class=\"wp-image-11611\" width=\"557\" height=\"159\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-6-1024x295.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-6-300x87.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-6-768x221.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-6-830x239.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-6-230x66.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-6-350x101.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-6-480x138.png 480w\" sizes=\"(max-width: 557px) 100vw, 557px\" \/><\/figure><\/div>\n\n\n\n<p>\u4ee5\u4e0a\u4e24\u4e2a\u5bf9\u8c61\u7684hash\u503c\u662f\u4e0d\u540c\u7684\uff0c\u8868\u793a\u8fd9\u662f\u4e0d\u540c\u7684\u4e24\u4e2a\u5bf9\u8c61\u3002<\/p>\n\n\n\n<p><strong>3. equals(obj)\u65b9\u6cd5<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><strong>3.1 equals\u7b80\u4ecb<\/strong><\/p>\n\n\n\n<p>Object\u4e2d\u7684equals\u65b9\u6cd5\u7528\u4e8e\u5224\u65adthis\u5bf9\u8c61\u548cobj\u672c\u8eab\u7684\u503c\u662f\u5426\u76f8\u7b49\uff0c\u5373\u7528\u6765\u5224\u65ad\u8c03\u7528equals\u65b9\u6cd5\u7684\u5bf9\u8c61\u548c\u5f62\u53c2obj\u6240\u5f15\u7528\u7684\u5bf9\u8c61\u662f\u5426\u662f\u540c\u4e00\u5bf9\u8c61\u3002\u6240\u8c13\u540c\u4e00\u5bf9\u8c61\uff0c\u5c31\u662f\u6307\u4e24\u4e2a\u5bf9\u8c61\u662f\u5426\u6307\u5411\u4e86\u5185\u5b58\u4e2d\u7684\u540c\u4e00\u5757\u5b58\u50a8\u5355\u5143\u5730\u5740\u3002\u5982\u679cthis\u548cobj\u6307\u5411\u7684\u662f\u540c\u4e00\u5757\u5185\u5b58\u5355\u5143\u5730\u5740\uff0c\u5219\u8fd4\u56detrue\uff1b\u5982\u679cthis\u548cobj\u6307\u5411\u7684\u4e0d\u662f\u540c\u4e00\u5757\u5185\u5b58\u5355\u5143\u5730\u5740\uff0c\u5219\u8fd4\u56defalse\u3002\u5982\u679c\u6ca1\u6709\u6307\u5411\u540c\u4e00\u5185\u5b58\u5355\u5143\uff0c\u5373\u4fbf\u662f\u5185\u5bb9\u5b8c\u5168\u76f8\u7b49\uff0c\u4e5f\u4f1a\u8fd4\u56defalse\u3002<\/p>\n\n\n\n<p>Object\u7c7b\u7684equals\u65b9\u6cd5\uff0c\u5176\u4f5c\u7528\u662f\u6bd4\u8f83\u4e24\u4e2a\u5bf9\u8c61\u662f\u5426\u76f8\u540c\uff0c\u9ed8\u8ba4\u6bd4\u8f83\u7684\u662f\u5185\u5b58\u5730\u5740\uff0c\u5176\u5e95\u5c42\u662f\u901a\u8fc7==\u5b9e\u73b0\u7684\u3002\u5982\u679c\u6211\u4eec\u4e0d\u60f3\u6bd4\u8f83\u5185\u5b58\u5730\u5740\uff0c\u90a3\u4e48\u5c31\u9700\u8981\u91cd\u5199equals\u65b9\u6cd5\u3002\u9ed8\u8ba4\u7684\u5b9e\u73b0\u6e90\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-7-1024x210.png\" alt=\"\" class=\"wp-image-11613\" width=\"552\" height=\"113\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-7-1024x210.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-7-300x61.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-7-768x157.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-7-830x170.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-7-230x47.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-7-350x72.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-7-480x98.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-7.png 1300w\" sizes=\"(max-width: 552px) 100vw, 552px\" \/><\/figure><\/div>\n\n\n\n<p>\u6211\u4eec\u77e5\u9053\uff0cJava\u4e2d\u8fd8\u6709\u4e00\u4e2a==\u8fd0\u7b97\u7b26\uff0c\u4e5f\u53ef\u4ee5\u5bf9\u4e24\u4e2a\u5bf9\u8c61\u8fdb\u884c\u6bd4\u8f83\u3002\u5982\u679c\u662f\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff0c==\u6bd4\u8f83\u7684\u662f\u5b83\u4eec\u7684\u503c\u662f\u5426\u76f8\u540c\uff1b\u5982\u679c\u662f\u5f15\u7528\u6570\u636e\u7c7b\u578b\uff0c\u6bd4\u8f83\u7684\u662f\u5b83\u4eec\u7684\u5185\u5b58\u5730\u5740\u662f\u5426\u76f8\u540c\u3002\u800cequals()\u65b9\u6cd5\u5219\u662f\u6bd4\u8f83\u4e24\u4e2a\u5bf9\u8c61\u7684\u5185\u5bb9\u662f\u5426\u76f8\u7b49\u3002<\/p>\n\n\n\n<p><strong>3.2 \u4f7f\u7528\u539f\u5219<\/strong><\/p>\n\n\n\n<p>\u6211\u4eec\u5728\u4f7f\u7528equals()\u65b9\u6cd5\u65f6\uff0c\u9700\u6ce8\u610f\u4e0b\u9762\u8fd9\u4e9b\u539f\u5219\uff1a<\/p>\n\n\n\n<ul><li>(1).equals()\u53ea\u80fd\u5904\u7406\u5f15\u7528\u7c7b\u578b\u53d8\u91cf\uff1b<\/li><li>(2).\u4e00\u822c\u60c5\u51b5\u4e0b\uff0cequals()\u65b9\u6cd5\u6bd4\u8f83\u7684\u662f\u4e24\u4e2a\u5f15\u7528\u7c7b\u578b\u53d8\u91cf\u7684\u5730\u5740\u503c\u662f\u5426\u76f8\u7b49\uff1b<\/li><li>(3).\u4f46\u662fString\u7c7b\u3001\u57fa\u672c\u7c7b\u578b\u5305\u88c5\u7c7b\u3001File\u7c7b\u3001Date\u7c7b\u7b49\uff0c\u90fd\u91cd\u5199\u4e86Object\u7c7b\u7684equals()\u65b9\u6cd5\uff0c\u6bd4\u8f83\u662f\u4e24\u4e2a\u5bf9\u8c61\u7684&#8221;\u5177\u4f53\u5185\u5bb9&#8221;\u662f\u5426\u76f8\u540c\u3002<\/li><\/ul>\n\n\n\n<p><strong>3.3 \u57fa\u672c\u7279\u6027<\/strong><\/p>\n\n\n\n<p>\u53e6\u5916Java\u8bed\u8a00\u89c4\u8303\u4e5f\u8981\u6c42equals\u65b9\u6cd5\u5177\u6709\u4e0b\u9762\u7684\u7279\u6027:<\/p>\n\n\n\n<ul><li>1. \u81ea\u53cd\u6027\uff1a\u5bf9\u4e8e\u4efb\u4f55\u975e\u7a7a\u5f15\u7528x\uff0cx.equals(x)\u5e94\u8be5\u8fd4\u56detrue\uff1b<\/li><li>2. \u5bf9\u79f0\u6027\uff1a\u5bf9\u4e8e\u4efb\u4f55\u5f15\u7528x\u548cy\uff0c\u5f53\u4e14\u4ec5\u5f53y.equals(x)\u8fd4\u56detrue\uff0cx.equals(y)\u4e5f\u5e94\u8be5\u8fd4\u56detrue\uff1b<\/li><li>3. \u4f20\u9012\u6027\uff1a\u5bf9\u4e8e\u4efb\u4f55\u5f15\u7528x\uff0cy\u548cz\uff0c\u5982\u679cx.equals(y)\u8fd4\u56detrue\uff0cy.equals(z)\u8fd4\u56detrue\uff0cx.equals(z)\u4e5f\u5e94\u8be5\u8fd4\u56detrue\uff1b<\/li><li>4. \u4e00\u81f4\u6027\uff1a\u5982\u679cx\u548cy\u5f15\u7528\u7684\u5bf9\u8c61\u6ca1\u6709\u53d1\u751f\u53d8\u5316\uff0c\u53cd\u590d\u8c03\u7528x.equals(y)\u5e94\u8be5\u8fd4\u56de\u540c\u6837\u7684\u7ed3\u679c\uff1b<\/li><li>5. \u5bf9\u4e8e\u4efb\u4f55\u975e\u7a7a\u5f15\u7528x\uff0cx.equals(null)\u5e94\u8be5\u8fd4\u56defalse\u3002<\/li><\/ul>\n\n\n\n<p><strong>3.4 \u6848\u4f8b<\/strong><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-8-1024x650.png\" alt=\"\" class=\"wp-image-11614\" width=\"515\" height=\"327\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-8-1024x650.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-8-300x191.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-8-768x488.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-8-830x527.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-8-230x146.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-8-350x222.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-8-480x305.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-8.png 1288w\" sizes=\"(max-width: 515px) 100vw, 515px\" \/><\/figure><\/div>\n\n\n\n<p>\u4ece\u4e0a\u9762\u7684\u6848\u4f8b\u4e2d\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u8bc1\u660e\uff0cequals()\u65b9\u6cd5\u7528\u4e8e\u5904\u7406\u5f15\u7528\u7c7b\u578b\u7684\u53d8\u91cf\uff0c\u9ed8\u8ba4\u6bd4\u8f83\u7684\u662f\u4e24\u4e2a\u5f15\u7528\u7c7b\u578b\u7684\u53d8\u91cf\u5730\u5740\u662f\u5426\u76f8\u7b49\u3002<\/p>\n\n\n\n<p><strong>4. getClass()\u65b9\u6cd5<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><strong>4.1 \u7b80\u4ecb<\/strong><\/p>\n\n\n\n<p>getClass()\u65b9\u6cd5\u53ef\u4ee5\u7528\u4e8e\u83b7\u53d6\u5bf9\u8c61\u8fd0\u884c\u65f6\u7684\u5b57\u8282\u7801\u7c7b\u578b\uff0c\u5f97\u5230\u8be5\u5bf9\u8c61\u7684\u8fd0\u884c\u65f6\u7684\u771f\u5b9e\u7c7b\u578b\u3002\u8be5\u65b9\u6cd5\u5c5e\u4e8eJava\u7684\u53cd\u5c04\u673a\u5236\uff0c\u5176\u8fd4\u56de\u503c\u662fClass\u7c7b\u578b\uff0c\u4f8b\u5982 Class c = obj.getClass();\u3002\u901a\u8fc7\u5bf9\u8c61c\uff0c\u6211\u4eec\u53ef\u4ee5\u8fdb\u4e00\u6b65\u83b7\u53d6\u8be5\u5bf9\u8c61\u7684\u6240\u6709\u6210\u5458\u65b9\u6cd5\uff0c\u6bcf\u4e2a\u6210\u5458\u65b9\u6cd5\u90fd\u662f\u4e00\u4e2aMethod\u5bf9\u8c61\u3002\u6211\u4eec\u4e5f\u53ef\u4ee5\u83b7\u53d6\u8be5\u5bf9\u8c61\u7684\u6240\u6709\u6210\u5458\u53d8\u91cf\uff0c\u6bcf\u4e2a\u6210\u5458\u53d8\u91cf\u90fd\u662f\u4e00\u4e2aField\u5bf9\u8c61\u3002\u540c\u6837\u7684\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u83b7\u53d6\u8be5\u5bf9\u8c61\u7684\u6784\u9020\u51fd\u6570\uff0c\u6784\u9020\u51fd\u6570\u5219\u662f\u4e00\u4e2aConstructor\u5bf9\u8c61\u3002<\/p>\n\n\n\n<p><strong>4.2 \u6848\u4f8b<\/strong><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-9-899x1024.png\" alt=\"\" class=\"wp-image-11615\" width=\"480\" height=\"546\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-9-899x1024.png 899w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-9-263x300.png 263w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-9-768x875.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-9-830x945.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-9-230x262.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-9-350x399.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-9-480x547.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-9.png 1298w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/figure><\/div>\n\n\n\n<p>\u4ece\u4e0a\u9762\u7684\u4ee3\u7801\u6848\u4f8b\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u5f97\u77e5\uff0cgetClass\u65b9\u6cd5\u7528\u4e8e\u8fd4\u56de\u8be5\u5bf9\u8c61\u7684\u771f\u5b9e\u7c7b\u578b(\u8fd0\u884c\u65f6\u7684\u7c7b\u578b)\uff0c\u53ef\u4ee5\u6839\u636e\u5bf9\u8c61\u7684\u5b57\u8282\u7801\u6765\u5224\u65ad\u4e24\u4e2a\u5bf9\u8c61\u662f\u5426\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61\u3002<\/p>\n\n\n\n<p><strong>5. toString()\u65b9\u6cd5<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><strong>5.1 \u7b80\u4ecb<\/strong><\/p>\n\n\n\n<p>toString()\u65b9\u6cd5\u53ef\u4ee5\u8bf4\u662f\u4e00\u4e2a\u8fdb\u884c\u201c\u81ea\u6211\u63cf\u8ff0\u201d\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8fd4\u56de\u67d0\u4e2a\u5bf9\u8c61\u7684\u5b57\u7b26\u4e32\uff0c\u5f53\u8981\u8f93\u51fa\u67d0\u4e2a\u5b9e\u4f8b\u5bf9\u8c61\u7684\u4fe1\u606f\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u91cd\u5199\u8be5\u65b9\u6cd5\u6765\u8f93\u51fa\u81ea\u6211\u63cf\u8ff0\u7684\u4fe1\u606f\u3002\u8be5\u65b9\u6cd5\u901a\u5e38\u53ea\u662f\u4e3a\u4e86\u65b9\u4fbf\u8f93\u51fa\u672c\u7c7b\u7684\u63cf\u8ff0\u4fe1\u606f\uff0c\u6bd4\u5982\u6267\u884cSystem.out.println(&#8220;xyz&#8221;)\u8fd9\u6837\u7684\u65e5\u5fd7\u8bed\u53e5\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u5f53\u7a0b\u5e8f\u8981\u8f93\u51fa\u4e00\u4e2a\u5bf9\u8c61\u6216\u8005\u628a\u67d0\u4e2a\u5bf9\u8c61\u548c\u5b57\u7b26\u4e32\u8fdb\u884c\u8fde\u63a5\u8fd0\u7b97\u65f6\uff0c\u7cfb\u7edf\u5c31\u4f1a\u81ea\u52a8\u8c03\u7528\u8be5\u5bf9\u8c61\u7684toString()\u65b9\u6cd5\u8fd4\u56de\u8be5\u5bf9\u8c61\u7684\u5b57\u7b26\u4e32\u8868\u793a\u3002<\/p>\n\n\n\n<p>Object\u7c7b\u7684toString()\u65b9\u6cd5\u4f1a\u8fd4\u56de\u201c\u8fd0\u884c\u65f6\u7684\u7c7b\u540d@\u5341\u516d\u8fdb\u5236\u54c8\u5e0c\u7801\u201d\u683c\u5f0f\u7684\u5b57\u7b26\u4e32\uff0c\u4f46\u5f88\u591a\u7c7b\u90fd\u91cd\u5199\u4e86 Object\u7c7b\u7684toString()\u65b9\u6cd5\uff0c\u7528\u4e8e\u8fd4\u56de\u53ef\u4ee5\u8868\u8ff0\u8be5\u5bf9\u8c61\u4fe1\u606f\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n<p><strong>5.2 \u6848\u4f8b<\/strong><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-10-665x1024.png\" alt=\"\" class=\"wp-image-11616\" width=\"372\" height=\"573\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-10-665x1024.png 665w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-10-195x300.png 195w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-10-768x1183.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-10-830x1279.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-10-230x354.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-10-350x539.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-10-480x739.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-10.png 862w\" sizes=\"(max-width: 372px) 100vw, 372px\" \/><\/figure><\/div>\n\n\n\n<p>\u4e0a\u8ff0\u4ee3\u7801\u6267\u884c\u7ed3\u679c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-11.png\" alt=\"\" class=\"wp-image-11617\" width=\"385\" height=\"112\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-11.png 860w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-11-300x88.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-11-768x225.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-11-830x243.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-11-230x67.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-11-350x103.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-11-480x141.png 480w\" sizes=\"(max-width: 385px) 100vw, 385px\" \/><\/figure><\/div>\n\n\n\n<p>\u4ece\u4e0a\u9762\u7a0b\u5e8f\u7684\u8fd0\u884c\u7ed3\u679c\u53ef\u4ee5\u53d1\u73b0\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5bf9\u8c61\u5e26\u4e0d\u5e26toString()\u65b9\u6cd5\uff0c\u5176\u6700\u7ec8\u7684\u8f93\u51fa\u7ed3\u679c\u662f\u4e00\u6837\u7684\uff0c\u5373\u5bf9\u8c61\u8f93\u51fa\u65f6\u4e00\u5b9a\u4f1a\u8c03\u7528 Object\u7c7b\u4e2d\u7684 toString()\u65b9\u6cd5\u6253\u5370\u5185\u5bb9\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u6b64\u7279\u6027\u6765\u901a\u8fc7 toString()\u65b9\u6cd5\u53d6\u5f97\u4e00\u4e9b\u5bf9\u8c61\u7684\u4fe1\u606f\u3002<\/p>\n\n\n\n<p><strong>6. wait()\u3001wait(long)\u3001wait(long,int)\u3001notify()\u3001notifyAll()\u65b9\u6cd5<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><strong>\u8fd9\u51e0\u4e2a\u51fd\u6570\u4f53\u73b0\u7684\u662fJava\u7684\u591a\u7ebf\u7a0b\u673a\u5236\uff0c\u4e00\u822c\u662f\u7ed3\u5408synchronize\u8bed\u53e5\u4f7f\u7528\u3002<\/strong><\/p>\n\n\n\n<ul><li>wait()\u7528\u4e8e\u8ba9\u5f53\u524d\u7ebf\u7a0b\u5931\u53bb\u64cd\u4f5c\u6743\u9650\uff0c\u5f53\u524d\u7ebf\u7a0b\u8fdb\u5165\u7b49\u5f85\u5e8f\u5217\uff1b<\/li><li>notify()\u7528\u4e8e\u968f\u673a\u901a\u77e5\u4e00\u4e2a\u6301\u6709\u5bf9\u8c61\u7684\u9501\u7684\u7ebf\u7a0b\u83b7\u53d6\u64cd\u4f5c\u6743\u9650\uff1b<\/li><li>wait(long) \u548cwait(long,int)\u7528\u4e8e\u8bbe\u5b9a\u4e0b\u4e00\u6b21\u83b7\u53d6\u9501\u7684\u8ddd\u79bb\u5f53\u524d\u91ca\u653e\u9501\u7684\u65f6\u95f4\u95f4\u9694\uff1b<\/li><li>notifyAll()\u7528\u4e8e\u901a\u77e5\u6240\u6709\u6301\u6709\u5bf9\u8c61\u7684\u9501\u7684\u7ebf\u7a0b\u83b7\u53d6\u64cd\u4f5c\u6743\u9650\u3002<\/li><\/ul>\n\n\n\n<p>\u8fd9\u51e0\u4e2a\u65b9\u6cd5\u6211\u4eec\u540e\u9762\u5728\u5206\u6790\u591a\u7ebf\u7a0b\u7684\u9762\u8bd5\u9898\u65f6\u518d\u7ec6\u8bf4\uff0c\u6b64\u5904\u5148\u4ec5\u505a\u4e86\u89e3\u3002<\/p>\n\n\n\n<p><strong>7. finalize()\u65b9\u6cd5<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><strong>7.1 \u7b80\u4ecb<\/strong><\/p>\n\n\n\n<p>finalize()\u65b9\u6cd5\u5728\u8fdb\u884c\u5783\u573e\u56de\u6536\u7684\u65f6\u5019\u4f1a\u7528\u5230\uff0c\u4e3b\u8981\u662f\u5728\u5783\u573e\u56de\u6536\u65f6\uff0c\u7528\u4e8e\u4f5c\u4e3a\u786e\u8ba4\u8be5\u5bf9\u8c61\u662f\u5426\u786e\u8ba4\u88ab\u56de\u6536\u7684\u4e00\u4e2a\u6807\u8bb0\u3002\u6211\u4eec\u5728\u4f7f\u7528finalize()\u65b9\u6cd5\u65f6\u8981\u6ce8\u610f\uff1a<\/p>\n\n\n\n<ul><li>finalize\u65b9\u6cd5\u4e0d\u4e00\u5b9a\u4f1a\u6267\u884c\uff0c\u53ea\u6709\u5728\u8be5\u65b9\u6cd5\u88ab\u91cd\u5199\u7684\u65f6\u5019\u624d\u4f1a\u6267\u884c\uff1b<\/li><li>finalize\u65b9\u6cd5\u53ea\u4f1a\u88ab\u6267\u884c\u4e00\u6b21\uff1b<\/li><li>\u5bf9\u8c61\u53ef\u4ee5\u5728finalize\u65b9\u6cd5\u4e2d\u83b7\u5f97\u81ea\u6551\uff0c\u907f\u514d\u81ea\u5df1\u88ab\u5783\u573e\u56de\u6536\uff0c\u540c\u6837\u7684\u81ea\u6551\u4e5f\u53ea\u80fd\u8fdb\u884c\u4e00\u6b21\uff1b<\/li><li>\u4e0d\u63a8\u8350Java\u7a0b\u5e8f\u5458\u624b\u52a8\u8c03\u7528\u8be5\u65b9\u6cd5\uff0c\u56e0\u4e3afinalize\u65b9\u6cd5\u4ee3\u4ef7\u5f88\u5927\u3002<\/li><\/ul>\n\n\n\n<p><strong>7.2 \u6848\u4f8b<\/strong><\/p>\n\n\n\n<p>\u4e3a\u4e86\u6d4b\u8bd5\u51fafinalize()\u65b9\u6cd5\u7684\u4f5c\u7528\uff0c\u7ed9\u5927\u5bb6\u8bbe\u8ba1\u4e86\u5982\u4e0b\u6848\u4f8b\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-12.png\" alt=\"\" class=\"wp-image-11618\" width=\"470\" height=\"539\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-12.png 850w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-12-261x300.png 261w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-12-768x882.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-12-830x953.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-12-230x264.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-12-350x402.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-12-480x551.png 480w\" sizes=\"(max-width: 470px) 100vw, 470px\" \/><\/figure><\/div>\n\n\n\n<p>\u7136\u540e\u6211\u4eec\u5bf9Dog\u5bf9\u8c61\u8fdb\u884c\u56de\u6536\u6d4b\u8bd5\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-13.png\" alt=\"\" class=\"wp-image-11619\" width=\"479\" height=\"306\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-13.png 878w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-13-300x192.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-13-768x492.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-13-830x531.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-13-230x147.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-13-350x224.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2023\/08\/image-13-480x307.png 480w\" sizes=\"(max-width: 479px) 100vw, 479px\" \/><\/figure><\/div>\n\n\n\n<p>\u8981\u60f3\u786e\u4fddfinalize()\u65b9\u6cd5\u7684\u6267\u884c\uff0c\u6211\u4eec\u9996\u5148\u9700\u8981\u5728\u76f8\u5173\u5bf9\u8c61\u4e2d\u91cd\u65b0finalize()\u65b9\u6cd5\uff0c\u7136\u540e\u5c06\u5f85\u56de\u6536\u7684\u5bf9\u8c61\u624b\u52a8\u6807\u8bb0\u4e3anull\uff0c\u6700\u540e\u518d\u624b\u52a8\u8c03\u7528gc()\u65b9\u6cd5\uff0c\u8fd9\u6837\u624d\u6709\u53ef\u80fd\u786e\u4fddfinalize()\u65b9\u6cd5\u4e00\u5b9a\u6267\u884c\u3002<\/p>\n\n\n\n<p>\u81f3\u6b64\u5c31\u628aObject\u7c7b\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u5b8c\u6bd5\u4e86\uff0c\u8fd9\u4e2a\u7c7b\u7684\u5185\u5bb9\u5e76\u4e0d\u662f\u5f88\u96be\uff0c<strong>\u4e3b\u8981\u662f\u638c\u63e1\u51e0\u4e2a\u5e38\u7528\u7684\u65b9\u6cd5\u5c31\u53ef\u4ee5\u4e86\uff0c\u5c24\u5176\u662fequals()\u3001hashCode()\u3001toString()\u3001getClass()\u7b49\u65b9\u6cd5\u3002<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. \u7b80\u4ecb 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