{"id":37406,"date":"2023-12-11T14:41:19","date_gmt":"2023-12-11T06:41:19","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=37406"},"modified":"2023-12-11T14:41:19","modified_gmt":"2023-12-11T06:41:19","slug":"hashset%e5%a6%82%e4%bd%95%e6%a3%80%e6%9f%a5%e9%87%8d%e5%a4%8d","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/11\/hashset%e5%a6%82%e4%bd%95%e6%a3%80%e6%9f%a5%e9%87%8d%e5%a4%8d\/","title":{"rendered":"HashSet\u5982\u4f55\u68c0\u67e5\u91cd\u590d"},"content":{"rendered":"

“`” \u5f53\u4f60\u628a\u5bf9\u8c61\u52a0\u5165HashSet<\/code>\u65f6\uff0cHashSet\u4f1a\u5148\u8ba1\u7b97\u5bf9\u8c61\u7684hashcode<\/code>\u503c\u6765\u5224\u65ad\u5bf9\u8c61\u52a0\u5165\u7684\u4f4d\u7f6e\uff0c\u540c\u65f6\u4e5f\u4f1a\u4e0e\u5176\u4ed6\u52a0\u5165\u7684\u5bf9\u8c61\u7684hashcode\u503c\u4f5c\u6bd4\u8f83\uff0c\u5982\u679c\u6ca1\u6709\u76f8\u7b26\u7684hashcode\uff0cHashSet\u4f1a\u5047\u8bbe\u5bf9\u8c61\u6ca1\u6709\u91cd\u590d\u51fa\u73b0\u3002\u4f46\u662f\u5982\u679c\u53d1\u73b0\u6709\u76f8\u540chashcode\u503c\u7684\u5bf9\u8c61\uff0c\u8fd9\u65f6\u4f1a\u8c03\u7528equals\uff08\uff09<\/code>\u65b9\u6cd5\u6765\u68c0\u67e5hashcode\u76f8\u7b49\u7684\u5bf9\u8c61\u662f\u5426\u771f\u7684\u76f8\u540c\u3002\u5982\u679c\u4e24\u8005\u76f8\u540c\uff0cHashSet\u5c31\u4e0d\u4f1a\u8ba9\u52a0\u5165\u64cd\u4f5c\u6210\u529f\u3002\uff08\u6458\u81ea\u6211\u7684Java\u542f\u8499\u4e66\u300aHead fist java\u300b\u7b2c\u4e8c\u7248\uff09<\/p>\n

<strong>hashCode\uff08\uff09\u4e0eequals\uff08\uff09\u7684\u76f8\u5173\u89c4\u5b9a\uff1a<\/strong><\/p>\n

<ol><li>\u5982\u679c\u4e24\u4e2a\u5bf9\u8c61\u76f8\u7b49\uff0c\u5219hashcode\u4e00\u5b9a\u4e5f\u662f\u76f8\u540c\u7684<\/li><li>\u4e24\u4e2a\u5bf9\u8c61\u76f8\u7b49,\u5bf9\u4e24\u4e2aequals\u65b9\u6cd5\u8fd4\u56detrue<\/li><li>\u4e24\u4e2a\u5bf9\u8c61\u6709\u76f8\u540c\u7684hashcode\u503c\uff0c\u5b83\u4eec\u4e5f\u4e0d\u4e00\u5b9a\u662f\u76f8\u7b49\u7684<\/li><li>\u7efc\u4e0a\uff0cequals\u65b9\u6cd5\u88ab\u8986\u76d6\u8fc7\uff0c\u5219hashCode\u65b9\u6cd5\u4e5f\u5fc5\u987b\u88ab\u8986\u76d6<\/li><li>hashCode()\u7684\u9ed8\u8ba4\u884c\u4e3a\u662f\u5bf9\u5806\u4e0a\u7684\u5bf9\u8c61\u4ea7\u751f\u72ec\u7279\u503c\u3002\u5982\u679c\u6ca1\u6709\u91cd\u5199hashCode()\uff0c\u5219\u8be5class\u7684\u4e24\u4e2a\u5bf9\u8c61\u65e0\u8bba\u5982\u4f55\u90fd\u4e0d\u4f1a\u76f8\u7b49\uff08\u5373\u4f7f\u8fd9\u4e24\u4e2a\u5bf9\u8c61\u6307\u5411\u76f8\u540c\u7684\u6570\u636e\uff09\u3002<\/li><\/ol><\/p>\n

<strong>==\u4e0eequals\u7684\u533a\u522b<\/strong><\/p>\n

<ol><li>==\u662f\u5224\u65ad\u4e24\u4e2a\u53d8\u91cf\u6216\u5b9e\u4f8b\u662f\u4e0d\u662f\u6307\u5411\u540c\u4e00\u4e2a\u5185\u5b58\u7a7a\u95f4 equals\u662f\u5224\u65ad\u4e24\u4e2a\u53d8\u91cf\u6216\u5b9e\u4f8b\u6240\u6307\u5411\u7684\u5185\u5b58\u7a7a\u95f4\u7684\u503c\u662f\u4e0d\u662f\u76f8\u540c<\/li><li>==\u662f\u6307\u5bf9\u5185\u5b58\u5730\u5740\u8fdb\u884c\u6bd4\u8f83 equals()\u662f\u5bf9\u5b57\u7b26\u4e32\u7684\u5185\u5bb9\u8fdb\u884c\u6bd4\u8f83<\/li><li>==\u6307\u5f15\u7528\u662f\u5426\u76f8\u540c equals()\u6307\u7684\u662f\u503c\u662f\u5426\u76f8\u540c<\/li><\/ol><\/p>\n

<pre><code> "“`
\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"

“`” \u5f53\u4f60\u628a\u5bf9\u8c61\u52a0\u5165HashSet\u65f6\uff0cHashSet\u4f1a\u5148\u8ba1\u7b97\u5bf9\u8c61\u7684hashcode\u503c […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-37406","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/37406","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=37406"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/37406\/revisions"}],"predecessor-version":[{"id":37407,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/37406\/revisions\/37407"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=37406"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=37406"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=37406"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}