{"id":11292,"date":"2023-11-28T21:58:49","date_gmt":"2023-11-28T13:58:49","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=11292"},"modified":"2023-12-08T11:31:33","modified_gmt":"2023-12-08T03:31:33","slug":"jvm-zhong-you-na-xie-yin-yong-lei-xing","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/jvm-zhong-you-na-xie-yin-yong-lei-xing\/","title":{"rendered":"JVM\u4e2d\u6709\u54ea\u4e9b\u5f15\u7528\u7c7b\u578b\uff1f"},"content":{"rendered":"

Java\u865a\u62df\u673a\u4e2d\u6709\u56db\u79cd\u5f15\u7528\u7c7b\u578b\uff0c\u5b83\u4eec\u5206\u522b\u662f\uff1a<\/p>\n

    \n
  1. \n\u5f3a\u5f15\u7528\uff08Strong Reference\uff09\uff1a<\/strong><\/p>\n
      \n
    • \u5f3a\u5f15\u7528\u662f\u6700\u666e\u901a\u7684\u5f15\u7528\u7c7b\u578b\u3002\u5f53\u4e00\u4e2a\u5bf9\u8c61\u88ab\u5f3a\u5f15\u7528\u5173\u8054\u65f6\uff0c\u5b83\u5c31\u4e0d\u4f1a\u88ab\u5783\u573e\u56de\u6536\u5668\u56de\u6536\uff0c\u5373\u4f7f\u5185\u5b58\u4e0d\u8db3\u65f6\u4e5f\u4e0d\u4f1a\u56de\u6536\u3002\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u4f7f\u7528\u7684\u90fd\u662f\u5f3a\u5f15\u7528\u3002<\/li>\n<\/ul>\n
      Object obj = new Object(); \/\/ \u5f3a\u5f15\u7528\n<\/code><\/pre>\n<\/li>\n
    • \n\u8f6f\u5f15\u7528\uff08Soft Reference\uff09\uff1a<\/strong><\/p>\n
        \n
      • \u8f6f\u5f15\u7528\u7528\u4e8e\u63cf\u8ff0\u4e00\u4e9b\u8fd8\u6709\u7528\u4f46\u975e\u5fc5\u9700\u7684\u5bf9\u8c61\u3002\u5f53\u7cfb\u7edf\u5185\u5b58\u5145\u8db3\u65f6\uff0c\u8f6f\u5f15\u7528\u7684\u5bf9\u8c61\u4e0d\u4f1a\u88ab\u56de\u6536\uff1b\u5f53\u7cfb\u7edf\u5185\u5b58\u4e0d\u8db3\u65f6\uff0c\u5783\u573e\u56de\u6536\u5668\u53ef\u80fd\u4f1a\u56de\u6536\u8f6f\u5f15\u7528\u7684\u5bf9\u8c61\u3002\u8f6f\u5f15\u7528\u901a\u5e38\u7528\u4e8e\u5b9e\u73b0\u7f13\u5b58\u7b56\u7565\u3002<\/li>\n<\/ul>\n
        SoftReference<Object> softRef = new SoftReference<>(new Object()); \/\/ \u8f6f\u5f15\u7528\n<\/code><\/pre>\n<\/li>\n
      • \n\u5f31\u5f15\u7528\uff08Weak Reference\uff09\uff1a<\/strong><\/p>\n
          \n
        • \u5f31\u5f15\u7528\u7528\u4e8e\u63cf\u8ff0\u975e\u5fc5\u9700\u7684\u5bf9\u8c61\u3002\u5f53\u5783\u573e\u56de\u6536\u5668\u5de5\u4f5c\u65f6\uff0c\u65e0\u8bba\u5185\u5b58\u662f\u5426\u5145\u8db3\uff0c\u5f31\u5f15\u7528\u7684\u5bf9\u8c61\u90fd\u6709\u53ef\u80fd\u88ab\u56de\u6536\u3002\u5f31\u5f15\u7528\u901a\u5e38\u7528\u4e8e\u5b9e\u73b0\u4e00\u4e9b\u7f13\u5b58\u673a\u5236\u3002<\/li>\n<\/ul>\n
          WeakReference<Object> weakRef = new WeakReference<>(new Object()); \/\/ \u5f31\u5f15\u7528\n<\/code><\/pre>\n<\/li>\n
        • \n\u865a\u5f15\u7528\uff08Phantom Reference\uff09\uff1a<\/strong><\/p>\n
            \n
          • \u865a\u5f15\u7528\u662f\u6700\u5f31\u7684\u5f15\u7528\u7c7b\u578b\uff0c\u51e0\u4e4e\u6ca1\u6709\u76f4\u63a5\u7684\u8bbf\u95ee\u4ef7\u503c\u3002\u865a\u5f15\u7528\u7684\u4e3b\u8981\u4f5c\u7528\u662f\u5728\u5bf9\u8c61\u88ab\u56de\u6536\u65f6\u63a5\u6536\u4e00\u4e2a\u7cfb\u7edf\u901a\u77e5\uff0c\u53ef\u4ee5\u5728\u5bf9\u8c61\u88ab\u56de\u6536\u524d\u6216\u8005\u88ab\u56de\u6536\u540e\u6267\u884c\u4e00\u4e9b\u64cd\u4f5c\u3002\u865a\u5f15\u7528\u5fc5\u987b\u4e0e\u5f15\u7528\u961f\u5217\uff08ReferenceQueue\uff09\u4e00\u8d77\u4f7f\u7528\u3002<\/li>\n<\/ul>\n
            PhantomReference<Object> phantomRef = new PhantomReference<>(new Object(), referenceQueue); \/\/ \u865a\u5f15\u7528\n<\/code><\/pre>\n<\/li>\n<\/ol>\n
            \u8fd9\u4e9b\u5f15\u7528\u7c7b\u578b\u4e3b\u8981\u7528\u4e8e\u5e2e\u52a9\u7a0b\u5e8f\u5458\u66f4\u7075\u6d3b\u5730\u63a7\u5236\u5bf9\u8c61\u7684\u751f\u547d\u5468\u671f\uff0c\u5b9e\u73b0\u4e00\u4e9b\u7279\u5b9a\u7684\u9700\u6c42\uff0c\u5982\u7f13\u5b58\u3001\u5bf9\u8c61\u7684\u540e\u5904\u7406\u7b49\u3002\u5728\u4f7f\u7528\u4e0d\u540c\u7684\u5f15\u7528\u7c7b\u578b\u65f6\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u4e1a\u52a1\u573a\u666f\u548c\u9700\u6c42\u6765\u9009\u62e9\u5408\u9002\u7684\u5f15\u7528\u7c7b\u578b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
            Java\u865a\u62df\u673a\u4e2d\u6709\u56db\u79cd\u5f15\u7528\u7c7b\u578b\uff0c\u5b83\u4eec\u5206\u522b\u662f\uff1a \u5f3a\u5f15\u7528\uff08Strong Reference\uff09\uff1a \u5f3a\u5f15\u7528\u662f\u6700\u666e\u901a\u7684\u5f15 […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[119],"tags":[],"class_list":["post-11292","post","type-post","status-publish","format-standard","hentry","category-jvm"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11292","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\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=11292"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11292\/revisions"}],"predecessor-version":[{"id":16986,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11292\/revisions\/16986"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=11292"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=11292"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=11292"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}