{"rsdb":{"rid":"285638","subhead":"","postdate":"0","aid":"202315","fid":"76","uid":"1","topic":"1","content":"<div class=\"entry\"> \n <div class=\"copyright-area\">\n  \u539f\u6587\u51fa\u5904\uff1a \n  <a>Snailclimb<\/a>\n <\/div> \n <p>\u672c\u6587\u4ece JVM \u7ed3\u6784\u5165\u624b\uff0c\u4ecb\u7ecd\u4e86 Java \u5185\u5b58\u7ba1\u7406\u3001\u5bf9\u8c61\u521b\u5efa\u3001\u5e38\u91cf\u6c60\u7b49\u57fa\u7840\u77e5\u8bc6\uff0c\u5bf9\u9762\u8bd5\u4e2d JVM \u76f8\u5173\u7684\u57fa\u7840\u9898\u76ee\u8fdb\u884c\u4e86\u8bb2\u89e3\u3002<\/p> \n <h3>\u5199\u5728\u524d\u9762\uff08\u5e38\u89c1\u9762\u8bd5\u9898\uff09<\/h3> \n <h4>\u57fa\u672c\u95ee\u9898<\/h4> \n <ul> \n  <li>\u4ecb\u7ecd\u4e0b Java \u5185\u5b58\u533a\u57df\uff08\u8fd0\u884c\u65f6\u6570\u636e\u533a\uff09<\/li> \n  <li>Java \u5bf9\u8c61\u7684\u521b\u5efa\u8fc7\u7a0b\uff08\u4e94\u6b65\uff0c\u5efa\u8bae\u80fd\u9ed8\u5199\u51fa\u6765\u5e76\u4e14\u8981\u77e5\u9053\u6bcf\u4e00\u6b65\u865a\u62df\u673a\u505a\u4e86\u4ec0\u4e48\uff09<\/li> \n  <li>\u5bf9\u8c61\u7684\u8bbf\u95ee\u5b9a\u4f4d\u7684\u4e24\u79cd\u65b9\u5f0f\uff08\u53e5\u67c4\u548c\u76f4\u63a5\u6307\u9488\u4e24\u79cd\u65b9\u5f0f\uff09<\/li> \n <\/ul> \n <h4>\u62d3\u5c55\u95ee\u9898<\/h4> \n <ul> \n  <li>String\u7c7b\u548c\u5e38\u91cf\u6c60<\/li> \n  <li>8\u79cd\u57fa\u672c\u7c7b\u578b\u7684\u5305\u88c5\u7c7b\u548c\u5e38\u91cf\u6c60<\/li> \n <\/ul> \n <h3>1 \u6982\u8ff0<\/h3> \n <p>\u5bf9\u4e8e Java \u7a0b\u5e8f\u5458\u6765\u8bf4\uff0c\u5728\u865a\u62df\u673a\u81ea\u52a8\u5185\u5b58\u7ba1\u7406\u673a\u5236\u4e0b\uff0c\u4e0d\u518d\u9700\u8981\u50cfC\/<a href=https:\/\/www.cppentry.com\/list.php?fid=49 style=text-decoration:underline;font-size:14px;color:#F70968; target=_blank>C++<\/a>\u7a0b\u5e8f\u5f00\u53d1\u7a0b\u5e8f\u5458\u8fd9\u6837\u4e3a\u5185\u4e00\u4e2a new \u64cd\u4f5c\u53bb\u5199\u5bf9\u5e94\u7684 delete\/free \u64cd\u4f5c\uff0c\u4e0d\u5bb9\u6613\u51fa\u73b0\u5185\u5b58\u6cc4\u6f0f\u548c\u5185\u5b58\u6ea2\u51fa\u95ee\u9898\u3002\u6b63\u662f\u56e0\u4e3a Java \u7a0b\u5e8f\u5458\u628a\u5185\u5b58\u63a7\u5236\u6743\u5229\u4ea4\u7ed9 Java \u865a\u62df\u673a\uff0c\u4e00\u65e6\u51fa\u73b0\u5185\u5b58\u6cc4\u6f0f\u548c\u6ea2\u51fa\u65b9\u9762\u7684\u95ee\u9898\uff0c\u5982\u679c\u4e0d\u4e86\u89e3\u865a\u62df\u673a\u662f\u600e\u6837\u4f7f\u7528\u5185\u5b58\u7684\uff0c\u90a3\u4e48\u6392\u67e5\u9519\u8bef\u5c06\u4f1a\u662f\u4e00\u4e2a\u975e\u5e38\u8270\u5de8\u7684\u4efb\u52a1\u3002<\/p> \n <h3>2 \u8fd0\u884c\u65f6\u6570\u636e\u533a\u57df<\/h3> \n <p>Java \u865a\u62df\u673a\u5728\u6267\u884c Java \u7a0b\u5e8f\u7684\u8fc7\u7a0b\u4e2d\u4f1a\u628a\u5b83\u7ba1\u7406\u7684\u5185\u5b58\u5212\u5206\u6210\u82e5\u5e72\u4e2a\u4e0d\u540c\u7684\u6570\u636e\u533a\u57df\u3002<\/p> \n <p><a rel=\"attachment wp-att-31130\"><img class=\"aligncenter size-full wp-image-31130\" title=\"jvm-1\" src=\"http:\/\/incdn1.b0.upaiyun.com\/2019\/01\/f86d06376bc82eb44dd4d5f93030c970.jpg\" alt=\"\" \/><\/a><\/p> \n <p>\u8fd9\u4e9b\u7ec4\u6210\u90e8\u5206\u4e00\u4e9b\u662f\u7ebf\u7a0b\u79c1\u6709\u7684\uff0c\u5176\u4ed6\u7684\u5219\u662f\u7ebf\u7a0b\u5171\u4eab\u7684\u3002<\/p> \n <p>\u7ebf\u7a0b\u79c1\u6709\u7684\uff1a<\/p> \n <ul> \n  <li>\u7a0b\u5e8f\u8ba1\u6570\u5668<\/li> \n  <li>\u865a\u62df\u673a\u6808<\/li> \n  <li>\u672c\u5730\u65b9\u6cd5\u6808<\/li> \n <\/ul> \n <p>\u7ebf\u7a0b\u5171\u4eab\u7684\uff1a<\/p> \n <ul> \n  <li>\u5806<\/li> \n  <li>\u65b9\u6cd5\u533a<\/li> \n  <li>\u76f4\u63a5\u5185\u5b58<\/li> \n <\/ul> \n <h4>2.1 \u7a0b\u5e8f\u8ba1\u6570\u5668<\/h4> \n <p>\u7a0b\u5e8f\u8ba1\u6570\u5668\u662f\u4e00\u5757\u8f83\u5c0f\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u53ef\u4ee5\u770b\u4f5c\u662f\u5f53\u524d\u7ebf\u7a0b\u6240\u6267\u884c\u7684\u5b57\u8282\u7801\u7684\u884c\u53f7\u6307\u793a\u5668\u3002\u5b57\u8282\u7801\u89e3\u91ca\u5668\u5de5\u4f5c\u65f6\u901a\u8fc7\u6539\u53d8\u8fd9\u4e2a\u8ba1\u6570\u5668\u7684\u503c\u6765\u9009\u53d6\u4e0b\u4e00\u6761\u9700\u8981\u6267\u884c\u7684\u5b57\u8282\u7801\u6307\u4ee4\uff0c\u5206\u652f\u3001\u5faa\u73af\u3001\u8df3\u8f6c\u3001\u5f02\u5e38\u5904\u7406\u3001\u7ebf\u7a0b\u6062\u590d\u7b49\u529f\u80fd\u90fd\u9700\u8981\u4f9d\u8d56\u8fd9\u4e2a\u8ba1\u6570\u5668\u6765\u5b8c\u3002<\/p> \n <p>\u53e6\u5916\uff0c\u4e3a\u4e86\u7ebf\u7a0b\u5207\u6362\u540e\u80fd\u6062\u590d\u5230\u6b63\u786e\u7684\u6267\u884c\u4f4d\u7f6e\uff0c\u6bcf\u6761\u7ebf\u7a0b\u90fd\u9700\u8981\u6709\u4e00\u4e2a\u72ec\u7acb\u7684\u7a0b\u5e8f\u8ba1\u6570\u5668\uff0c\u5404\u7ebf\u7a0b\u4e4b\u95f4\u8ba1\u6570\u5668\u4e92\u4e0d\u5f71\u54cd\uff0c\u72ec\u7acb\u5b58\u50a8\uff0c\u6211\u4eec\u79f0\u8fd9\u7c7b\u5185\u5b58\u533a\u57df\u4e3a\u201c\u7ebf\u7a0b\u79c1\u6709\u201d\u7684\u5185\u5b58\u3002<\/p> \n <p>\u4ece\u4e0a\u9762\u7684\u4ecb\u7ecd\u4e2d\u6211\u4eec\u77e5\u9053\u7a0b\u5e8f\u8ba1\u6570\u5668\u4e3b\u8981\u6709\u4e24\u4e2a\u4f5c\u7528\uff1a<\/p> \n <ol> \n  <li>\u5b57\u8282\u7801\u89e3\u91ca\u5668\u901a\u8fc7\u6539\u53d8\u7a0b\u5e8f\u8ba1\u6570\u5668\u6765\u4f9d\u6b21\u8bfb\u53d6\u6307\u4ee4\uff0c\u4ece\u800c\u5b9e\u73b0\u4ee3\u7801\u7684\u6d41\u7a0b\u63a7\u5236\uff0c\u5982\uff1a\u987a\u5e8f\u6267\u884c\u3001\u9009\u62e9\u3001\u5faa\u73af\u3001\u5f02\u5e38\u5904\u7406\u3002<\/li> \n  <li>\u5728\u591a\u7ebf\u7a0b\u7684\u60c5\u51b5\u4e0b\uff0c\u7a0b\u5e8f\u8ba1\u6570\u5668\u7528\u4e8e\u8bb0\u5f55\u5f53\u524d\u7ebf\u7a0b\u6267\u884c\u7684\u4f4d\u7f6e\uff0c\u4ece\u800c\u5f53\u7ebf\u7a0b\u88ab\u5207\u6362\u56de\u6765\u7684\u65f6\u5019\u80fd\u591f\u77e5\u9053\u8be5\u7ebf\u7a0b\u4e0a\u6b21\u8fd0\u884c\u5230\u54ea\u513f\u4e86\u3002<\/li> \n <\/ol> \n <p><strong>\u6ce8\u610f\uff1a<\/strong>\u7a0b\u5e8f\u8ba1\u6570\u5668\u662f\u552f\u4e0d\u4f1a\u51fa\u73b0 OutOfMemoryError \u7684\u5185\u5b58\u533a\u57df\uff0c\u5b83\u7684\u751f\u547d\u5468\u671f\u968f\u7740\u7ebf\u7a0b\u7684\u521b\u5efa\u800c\u521b\u5efa\uff0c\u968f\u7740\u7ebf\u7a0b\u7684\u7ed3\u675f\u800c\u6b7b\u4ea1\u3002<\/p> \n <h4>2.2 Java \u865a\u62df\u673a\u6808<\/h4> \n <p>\u4e0e\u7a0b\u5e8f\u8ba1\u6570\u5668\u4e00\u6837\uff0cJava\u865a\u62df\u673a\u6808\u4e5f\u662f\u7ebf\u7a0b\u79c1\u6709\u7684\uff0c\u5b83\u7684\u751f\u547d\u5468\u671f\u548c\u7ebf\u7a0b\u76f8\u540c\uff0c\u63cf\u8ff0\u7684\u662f Java \u65b9\u6cd5\u6267\u884c\u7684\u5185\u5b58\u6a21\u578b\u3002<\/p> \n <p>Java \u5185\u5b58\u53ef\u4ee5\u7c97\u7cd9\u7684\u533a\u5206\u4e3a\u5806\u5185\u5b58\uff08Heap\uff09\u548c\u6808\u5185\u5b58\uff08Stack\uff09\u5176\u4e2d\u6808\u5c31\u662f\u73b0\u5728\u8bf4\u7684\u865a\u62df\u673a\u6808\uff0c\u6216\u8005\u8bf4\u662f\u865a\u62df\u673a\u6808\u4e2d\u5c40\u90e8\u53d8\u91cf\u8868\u90e8\u5206\u3002&nbsp;\uff08\u5b9e\u9645\u4e0a\uff0cJava\u865a\u62df\u673a\u6808\u662f\u7531\u4e00\u4e2a\u4e2a\u6808\u5e27\u7ec4\u6210\uff0c\u800c\u6bcf\u4e2a\u6808\u5e27\u4e2d\u90fd\u62e5\u6709\u5c40\u90e8\u53d8\u91cf\u8868\u3001\u64cd\u4f5c\u6570\u6808\u3001\u52a8\u6001\u94fe\u63a5\u3001\u65b9\u6cd5\u51fa\u53e3\u4fe1\u606f\uff09<\/p> \n <p>\u5c40\u90e8\u53d8\u91cf\u8868\u4e3b\u8981\u5b58\u653e\u4e86\u7f16\u8bd1\u5668\u53ef\u77e5\u7684\u5404\u79cd\u6570\u636e\u7c7b\u578b\uff08boolean\u3001byte\u3001char\u3001short\u3001int\u3001float\u3001long\u3001double\uff09\u3001\u5bf9\u8c61\u5f15\u7528\uff08reference\u7c7b\u578b\uff0c\u5b83\u4e0d\u540c\u4e8e\u5bf9\u8c61\u672c\u8eab\uff0c\u53ef\u80fd\u662f\u4e00\u4e2a\u6307\u5411\u5bf9\u8c61\u8d77\u59cb\u5730\u5740\u7684\u5f15\u7528\u6307\u9488\uff0c\u4e5f\u53ef\u80fd\u662f\u6307\u5411\u4e00\u4e2a\u4ee3\u8868\u5bf9\u8c61\u7684\u53e5\u67c4\u6216\u5176\u4ed6\u4e0e\u6b64\u5bf9\u8c61\u76f8\u5173\u7684\u4f4d\u7f6e\uff09\u3002<\/p> \n <p>Java \u865a\u62df\u673a\u6808\u4f1a\u51fa\u73b0\u4e24\u79cd\u5f02\u5e38\uff1aStackOverFlowError \u548c OutOfMemoryError\u3002<\/p> \n <ul> \n  <li>StackOverFlowError\uff1a&nbsp;\u82e5Java\u865a\u62df\u673a\u6808\u7684\u5185\u5b58\u5927\u5c0f\u4e0d\u5141\u8bb8\u52a8\u6001\u6269\u5c55\uff0c\u90a3\u4e48\u5f53\u7ebf\u7a0b\u8bf7\u6c42\u6808\u7684\u6df1\u5ea6\u8d85\u8fc7\u5f53\u524dJava\u865a\u62df\u673a\u6808\u7684\u6700\u5927\u6df1\u5ea6\u7684\u65f6\u5019\uff0c\u5c31\u629b\u51faStackOverFlowError\u5f02\u5e38\u3002<\/li> \n  <li>OutOfMemoryError\uff1a&nbsp;\u82e5 Java \u865a\u62df\u673a\u6808\u7684\u5185\u5b58\u5927\u5c0f\u5141\u8bb8\u52a8\u6001\u6269\u5c55\uff0c\u4e14\u5f53\u7ebf\u7a0b\u8bf7\u6c42\u6808\u65f6\u5185\u5b58\u7528\u5b8c\u4e86\uff0c\u65e0\u6cd5\u518d\u52a8\u6001\u6269\u5c55\u4e86\uff0c\u6b64\u65f6\u629b\u51faOutOfMemoryError\u5f02\u5e38\u3002<\/li> \n <\/ul> \n <p>Java \u865a\u62df\u673a\u6808\u4e5f\u662f\u7ebf\u7a0b\u79c1\u6709\u7684\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u5404\u81ea\u7684Java\u865a\u62df\u673a\u6808\uff0c\u800c\u4e14\u968f\u7740\u7ebf\u7a0b\u7684\u521b\u5efa\u800c\u521b\u5efa\uff0c\u968f\u7740\u7ebf\u7a0b\u7684\u6b7b\u4ea1\u800c\u6b7b\u4ea1\u3002<\/p> \n <h3>2.3 \u672c\u5730\u65b9\u6cd5\u6808<\/h3> \n <p>\u548c\u865a\u62df\u673a\u6808\u6240\u53d1\u6325\u7684\u4f5c\u7528\u975e\u5e38\u76f8\u4f3c\uff0c\u533a\u522b\u662f\uff1a&nbsp;\u865a\u62df\u673a\u6808\u4e3a\u865a\u62df\u673a\u6267\u884c Java \u65b9\u6cd5 \uff08\u4e5f\u5c31\u662f\u5b57\u8282\u7801\uff09\u670d\u52a1\uff0c\u800c\u672c\u5730\u65b9\u6cd5\u6808\u5219\u4e3a\u865a\u62df\u673a\u4f7f\u7528\u5230\u7684 Native \u65b9\u6cd5\u670d\u52a1\u3002&nbsp;\u5728 HotSpot \u865a\u62df\u673a\u4e2d\u548c Java \u865a\u62df\u673a\u6808\u5408\u4e8c\u4e3a\u4e00\u3002<\/p> \n <p>\u672c\u5730\u65b9\u6cd5\u88ab\u6267\u884c\u7684\u65f6\u5019\uff0c\u5728\u672c\u5730\u65b9\u6cd5\u6808\u4e5f\u4f1a\u521b\u5efa\u4e00\u4e2a\u6808\u5e27\uff0c\u7528\u4e8e\u5b58\u653e\u8be5\u672c\u5730\u65b9\u6cd5\u7684\u5c40\u90e8\u53d8\u91cf\u8868\u3001\u64cd\u4f5c\u6570\u6808\u3001\u52a8\u6001\u94fe\u63a5\u3001\u51fa\u53e3\u4fe1\u606f\u3002<\/p> \n <p>\u65b9\u6cd5\u6267\u884c\u5b8c\u6bd5\u540e\u76f8\u5e94\u7684\u6808\u5e27\u4e5f\u4f1a\u51fa\u6808\u5e76\u91ca\u653e\u5185\u5b58\u7a7a\u95f4\uff0c\u4e5f\u4f1a\u51fa\u73b0 StackOverFlowError \u548c OutOfMemoryError \u4e24\u79cd\u5f02\u5e38\u3002<\/p> \n <h3>2.4 \u5806<\/h3> \n <p>Java \u865a\u62df\u673a\u6240\u7ba1\u7406\u7684\u5185\u5b58\u4e2d\u6700\u5927\u7684\u4e00\u5757\uff0cJava \u5806\u662f\u6240\u6709\u7ebf\u7a0b\u5171\u4eab\u7684\u4e00\u5757\u5185\u5b58\u533a\u57df\uff0c\u5728\u865a\u62df\u673a\u542f\u52a8\u65f6\u521b\u5efa\u3002\u6b64\u5185\u5b58\u533a\u57df\u7684\u552f\u4e00\u76ee\u7684\u5c31\u662f\u5b58\u653e\u5bf9\u8c61\u5b9e\u4f8b\uff0c\u51e0\u4e4e\u6240\u6709\u7684\u5bf9\u8c61\u5b9e\u4f8b\u4ee5\u53ca\u6570\u7ec4\u90fd\u5728\u8fd9\u91cc\u5206\u914d\u5185\u5b58\u3002<\/p> \n <p>Java \u5806\u662f\u5783\u573e\u6536\u96c6\u5668\u7ba1\u7406\u7684\u4e3b\u8981\u533a\u57df\uff0c\u56e0\u6b64\u4e5f\u88ab\u79f0\u4f5cGC\u5806\uff08Garbage Collected Heap\uff09.\u4ece\u5783\u573e\u56de\u6536\u7684\u89d2\u5ea6\uff0c\u7531\u4e8e\u73b0\u5728\u6536\u96c6\u5668\u57fa\u672c\u90fd\u91c7\u7528\u5206\u4ee3\u5783\u573e\u6536\u96c6\u7b97\u6cd5\uff0c\u6240\u4ee5Java\u5806\u8fd8\u53ef\u4ee5\u7ec6\u5206\u4e3a\uff1a\u65b0\u751f\u4ee3\u548c\u8001\u5e74\u4ee3\uff1a\u518d\u7ec6\u81f4\u4e00\u70b9\u6709\uff1aEden\u7a7a\u95f4\u3001From Survivor\u3001To Survivor\u7a7a\u95f4\u7b49\u3002\u8fdb\u4e00\u6b65\u5212\u5206\u7684\u76ee\u7684\u662f\u66f4\u597d\u5730\u56de\u6536\u5185\u5b58\uff0c\u6216\u8005\u66f4\u5feb\u5730\u5206\u914d\u5185\u5b58\u3002<\/p> \n <p><a rel=\"attachment wp-att-31131\"><img class=\"aligncenter size-full wp-image-31131\" title=\"jvm-2\" src=\"http:\/\/incdn1.b0.upaiyun.com\/2019\/01\/19307619b4ddae3ef19002bc6ac51b5c.png\" alt=\"\" \/><\/a><\/p> \n <p>\u5728 JDK 1.8\u4e2d\u79fb\u9664\u6574\u4e2a\u6c38\u4e45\u4ee3\uff0c\u53d6\u800c\u4ee3\u4e4b\u7684\u662f\u4e00\u4e2a\u53eb\u5143\u7a7a\u95f4\uff08Metaspace\uff09\u7684\u533a\u57df\uff08\u6c38\u4e45\u4ee3\u4f7f\u7528\u7684\u662fJVM\u7684\u5806\u5185\u5b58\u7a7a\u95f4\uff0c\u800c\u5143\u7a7a\u95f4\u4f7f\u7528\u7684\u662f\u7269\u7406\u5185\u5b58\uff0c\u76f4\u63a5\u53d7\u5230\u672c\u673a\u7684\u7269\u7406\u5185\u5b58\u9650\u5236\uff09\u3002<\/p> \n <p><strong>\u63a8\u8350\u9605\u8bfb\uff1a<\/strong><a class=\"external\" rel=\"nofollow\" target=\"_blank\">Java8\u5185\u5b58\u6a21\u578b\u2014\u2014\u6c38\u4e45\u4ee3\uff08PermGen\uff09\u548c\u5143\u7a7a\u95f4\uff08Metaspace\uff09<\/a><\/p> \n <h3>2.5 \u65b9\u6cd5\u533a<\/h3> \n <p>\u65b9\u6cd5\u533a\u4e0e Java \u5806\u4e00\u6837\uff0c\u662f\u5404\u4e2a\u7ebf\u7a0b\u5171\u4eab\u7684\u5185\u5b58\u533a\u57df\uff0c\u5b83\u7528\u4e8e\u5b58\u50a8\u5df2\u88ab\u865a\u62df\u673a\u52a0\u8f7d\u7684\u7c7b\u4fe1\u606f\u3001\u5e38\u91cf\u3001\u9759\u6001\u53d8\u91cf\u3001\u5373\u65f6\u7f16\u8bd1\u5668\u7f16\u8bd1\u540e\u7684\u4ee3\u7801\u7b49\u6570\u636e\u3002\u867d\u7136Java\u865a\u62df\u673a\u89c4\u8303\u628a\u65b9\u6cd5\u533a\u63cf\u8ff0\u4e3a\u5806\u7684\u4e00\u4e2a\u903b\u8f91\u90e8\u5206\uff0c\u4f46\u662f\u5b83\u5374\u6709\u4e00\u4e2a\u522b\u540d\u53eb\u505a Non-Heap\uff08\u975e\u5806\uff09\uff0c\u76ee\u7684\u5e94\u8be5\u662f\u4e0e Java \u5806\u533a\u5206\u5f00\u6765\u3002<\/p> \n <p>HotSpot \u865a\u62df\u673a\u4e2d\u65b9\u6cd5\u533a\u4e5f\u5e38\u88ab\u79f0\u4e3a&nbsp;\u201c\u6c38\u4e45\u4ee3\u201d\uff0c\u672c\u8d28\u4e0a\u4e24\u8005\u5e76\u4e0d\u7b49\u4ef7\u3002\u4ec5\u4ec5\u662f\u56e0\u4e3a HotSpot \u865a\u62df\u673a\u8bbe\u8ba1\u56e2\u961f\u7528\u6c38\u4e45\u4ee3\u6765\u5b9e\u73b0\u65b9\u6cd5\u533a\u800c\u5df2\uff0c\u8fd9\u6837 HotSpot \u865a\u62df\u673a\u7684\u5783\u573e\u6536\u96c6\u5668\u5c31\u53ef\u4ee5\u50cf\u7ba1\u7406 Java \u5806\u4e00\u6837\u7ba1\u7406\u8fd9\u90e8\u5206\u5185\u5b58\u4e86\u3002\u4f46\u662f\u8fd9\u5e76\u4e0d\u662f\u4e00\u4e2a\u597d\u4e3b\u610f\uff0c\u56e0\u4e3a\u8fd9\u6837\u66f4\u5bb9\u6613\u9047\u5230\u5185\u5b58\u6ea2\u51fa\u95ee\u9898\u3002<\/p> \n <p>\u76f8\u5bf9\u800c\u8a00\uff0c\u5783\u573e\u6536\u96c6\u884c\u4e3a\u5728\u8fd9\u4e2a\u533a\u57df\u662f\u6bd4\u8f83\u5c11\u51fa\u73b0\u7684\uff0c\u4f46\u5e76\u975e\u6570\u636e\u8fdb\u5165\u65b9\u6cd5\u533a\u540e\u5c31\u201c\u6c38\u4e45\u5b58\u5728\u201d\u4e86\u3002<\/p> \n <h3>2.6 \u8fd0\u884c\u65f6\u5e38\u91cf\u6c60<\/h3> \n <p>\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u662f\u65b9\u6cd5\u533a\u7684\u4e00\u90e8\u5206\u3002Class \u6587\u4ef6\u4e2d\u9664\u4e86\u6709\u7c7b\u7684\u7248\u672c\u3001\u5b57\u6bb5\u3001\u65b9\u6cd5\u3001\u63a5\u53e3\u7b49\u63cf\u8ff0\u4fe1\u606f\u5916\uff0c\u8fd8\u6709\u5e38\u91cf\u6c60\u4fe1\u606f\uff08\u7528\u4e8e\u5b58\u653e\u7f16\u8bd1\u671f\u751f\u6210\u7684\u5404\u79cd\u5b57\u9762\u91cf\u548c\u7b26\u53f7\u5f15\u7528\uff09<\/p> \n <p>\u65e2\u7136\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u65f6\u65b9\u6cd5\u533a\u7684\u4e00\u90e8\u5206\uff0c\u81ea\u7136\u53d7\u5230\u65b9\u6cd5\u533a\u5185\u5b58\u7684\u9650\u5236\uff0c\u5f53\u5e38\u91cf\u6c60\u65e0\u6cd5\u518d\u7533\u8bf7\u5230\u5185\u5b58\u65f6\u4f1a\u629b\u51fa OutOfMemoryError \u5f02\u5e38\u3002<\/p> \n <p>JDK1.7\u53ca\u4e4b\u540e\u7248\u672c\u7684 JVM \u5df2\u7ecf\u5c06\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u4ece\u65b9\u6cd5\u533a\u4e2d\u79fb\u4e86\u51fa\u6765\uff0c\u5728 Java \u5806\uff08Heap\uff09\u4e2d\u5f00\u8f9f\u4e86\u4e00\u5757\u533a\u57df\u5b58\u653e\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u3002<\/p> \n <p><a rel=\"attachment wp-att-31132\"><img class=\"aligncenter size-full wp-image-31132\" title=\"jvm-3\" src=\"http:\/\/incdn1.b0.upaiyun.com\/2019\/01\/6b19f9fdeaa517c2e84370525a63c659.jpg\" alt=\"\" \/><\/a><\/p> \n <p>\u63a8\u8350\u9605\u8bfb\uff1a<a class=\"external\" rel=\"nofollow\" target=\"_blank\">Java \u4e2d\u51e0\u79cd\u5e38\u91cf\u6c60\u7684\u533a\u5206<\/a><\/p> \n <h3>2.7 \u76f4\u63a5\u5185\u5b58<\/h3> \n <p>\u76f4\u63a5\u5185\u5b58\u5e76\u4e0d\u662f\u865a\u62df\u673a\u8fd0\u884c\u65f6\u6570\u636e\u533a\u7684\u4e00\u90e8\u5206\uff0c\u4e5f\u4e0d\u662f\u865a\u62df\u673a\u89c4\u8303\u4e2d\u5b9a\u4e49\u7684\u5185\u5b58\u533a\u57df\uff0c\u4f46\u662f\u8fd9\u90e8\u5206\u5185\u5b58\u4e5f\u88ab\u9891\u7e41\u5730\u4f7f\u7528\u3002\u800c\u4e14\u4e5f\u53ef\u80fd\u5bfc\u81f4OutOfMemoryError\u5f02\u5e38\u51fa\u73b0\u3002<\/p> \n <p>JDK1.4\u4e2d\u65b0\u52a0\u5165\u7684&nbsp;NIO(New Input\/Output) \u7c7b\uff0c\u5f15\u5165\u4e86\u4e00\u79cd\u57fa\u4e8e\u901a\u9053\uff08Channel\uff09&nbsp;\u4e0e\u7f13\u5b58\u533a\uff08Buffer\uff09&nbsp;\u7684 I\/O \u65b9\u5f0f\uff0c\u5b83\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528Native\u51fd\u6570\u5e93\u76f4\u63a5\u5206\u914d\u5806\u5916\u5185\u5b58\uff0c\u7136\u540e\u901a\u8fc7\u4e00\u4e2a\u5b58\u50a8\u5728 Jav","orderid":"0","title":"JVM\u57fa\u7840\u9762\u8bd5\u9898\u53ca\u539f\u7406\u8bb2\u89e3(\u4e00)","smalltitle":"","mid":"0","fname":"JAVA","special_id":"0","bak_id":"0","info":"0","hits":"475","pages":"3","comments":"0","posttime":"2019-01-03 20:09:05","list":"1546517345","username":"admin","author":"","copyfrom":"","copyfromurl":"","titlecolor":"","fonttype":"0","titleicon":"0","picurl":"http:\/\/incdn1.b0.upaiyun.com\/2019\/01\/f86d06376bc82eb44dd4d5f93030c970.jpg","ispic":"1","yz":"1","yzer":"","yztime":"0","levels":"0","levelstime":"0","keywords":"<A HREF='https:\/\/www.cppentry.com\/do\/search.php?type=keyword&keyword=JVM' target=_blank>JVM<\/A> <A HREF='https:\/\/www.cppentry.com\/do\/search.php?type=keyword&keyword=%BB%F9%B4%A1' target=_blank>\u57fa\u7840<\/A> <A HREF='https:\/\/www.cppentry.com\/do\/search.php?type=keyword&keyword=%CA%D4%CC%E2' target=_blank>\u8bd5\u9898<\/A> <A HREF='https:\/\/www.cppentry.com\/do\/search.php?type=keyword&keyword=%D4%AD%C0%ED' target=_blank>\u539f\u7406<\/A> <A HREF='https:\/\/www.cppentry.com\/do\/search.php?type=keyword&keyword=%BD%B2%BD%E2' target=_blank>\u8bb2\u89e3<\/A>","jumpurl":"","iframeurl":"","style":"","template":"a:3:{s:4:\"head\";s:0:\"\";s:4:\"foot\";s:0:\"\";s:8:\"bencandy\";s:0:\"\";}","target":"0","ip":"47.106.78.186","lastfid":"0","money":"0","buyuser":"","passwd":"","allowdown":"","allowview":"","editer":"","edittime":"0","begintime":"0","endtime":"0","description":"JVM\u57fa\u7840\u9762\u8bd5\u9898\u53ca\u539f\u7406\u8bb2\u89e3","lastview":"1714024375","digg_num":"0","digg_time":"0","forbidcomment":"0","ifvote":"0","heart":"","htmlname":"","city_id":"0"},"page":"1"}