{"id":199,"date":"2014-08-27T09:28:14","date_gmt":"2014-08-27T01:28:14","guid":{"rendered":"http:\/\/www.codeeel.com\/?p=199"},"modified":"2014-08-27T09:28:14","modified_gmt":"2014-08-27T01:28:14","slug":"java%e7%9f%a5%e8%af%86%e5%ba%93","status":"publish","type":"post","link":"https:\/\/www.codeeel.com\/?p=199","title":{"rendered":"JAVA\u77e5\u8bc6\u5e93"},"content":{"rendered":"<div>\n<h4>JAVA\u7b80\u4ecb<\/h4>\n<p>\u5b83\u6700\u521d\u88ab\u547d\u540d\u4e3aOak\uff0c\u76ee\u6807\u8bbe\u5b9a\u5728\u5bb6\u7528\u7535\u5668\u7b49\u5c0f\u578b\u7cfb\u7edf\u7684\u7f16\u7a0b\u8bed\u8a00\uff0c\u6765\u89e3\u51b3\u8bf8\u5982\u7535\u89c6\u673a\u3001\u7535\u8bdd\u3001\u95f9\u949f\u3001\u70e4\u9762\u5305\u673a\u7b49\u5bb6\u7528\u7535\u5668\u7684\u63a7\u5236\u548c\u901a\u8baf\u95ee\u9898\u3002\u7531\u4e8e\u8fd9\u4e9b\u667a\u80fd\u5316\u5bb6\u7535\u7684\u5e02\u573a\u9700\u6c42\u6ca1\u6709\u9884\u671f\u7684\u9ad8\uff0cSun\u653e\u5f03\u4e86\u8be5\u9879\u8ba1\u5212\u3002\u5c31\u5728Oak\u51e0\u8fd1\u5931\u8d25\u4e4b\u65f6\uff0c\u968f\u7740\u4e92\u8054\u7f51\u7684\u53d1\u5c55\uff0cSun\u770b\u5230\u4e86Oak\u5728\u8ba1\u7b97\u673a\u7f51\u7edc\u4e0a\u7684\u5e7f\u9614\u5e94\u7528\u524d\u666f\uff0c\u4e8e\u662f\u6539\u9020\u4e86Oak\uff0c\u4ee5\u201cJava\u201d\u7684\u540d\u79f0\u6b63\u5f0f\u53d1\u5e03\u3002<br 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Java \u7a0b\u5e8f\u7684\u8fd0\u884c\u6548\u7387\u3002\u4f46\u5728 J2SE 1.4.2 \u53d1\u5e03\u540e\uff0cJava \u7684\u6267\u884c\u901f\u5ea6\u6709\u4e86\u5927\u5e45\u63d0\u5347\u3002<br \/>\n\u4e0e\u4f20\u7edf\u7a0b\u5e8f\u4e0d\u540c\uff0cSun \u516c\u53f8\u5728\u63a8\u51fa Java \u4e4b\u9645\u5c31\u5c06\u5176\u4f5c\u4e3a\u4e00\u79cd\u5f00\u653e\u7684\u6280\u672f\u3002\u5168\u7403\u6570\u4ee5\u4e07\u8ba1\u7684 Java \u5f00\u53d1\u516c\u53f8\u88ab\u8981\u6c42\u6240\u8bbe\u8ba1\u7684 Java \u8f6f\u4ef6\u5fc5\u987b\u76f8\u4e92\u517c\u5bb9\u3002\u201cJava \u8bed\u8a00\u9760\u7fa4\u4f53\u7684\u529b\u91cf\u800c\u975e\u516c\u53f8\u7684\u529b\u91cf\u201d\u662f Sun \u516c\u53f8\u7684\u53e3\u53f7\u4e4b\u4e00\uff0c\u5e76\u83b7\u5f97\u4e86\u5e7f\u5927\u8f6f\u4ef6\u5f00\u53d1\u5546\u7684\u8ba4\u540c\u3002\u8fd9\u4e0e\u5fae\u8f6f\u516c\u53f8\u6240\u5021\u5bfc\u7684\u6ce8\u91cd\u7cbe\u82f1\u548c\u5c01\u95ed\u5f0f\u7684\u6a21\u5f0f\u5b8c\u5168\u4e0d\u540c\u3002<br \/>\nSun \u516c\u53f8\u5bf9 Java 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\/>\n\u52a8\u6001\u8c03\u7528\u6bd4\u9759\u6001\u8c03\u7528\u82b1\u8d39\u7684\u65f6\u95f4\u8981\u957f\u3002<br \/>\n\u591a\u6001\u7c7b\uff1a\u5728java\u4e2d\uff0c\u5bf9\u8c61\u53d8\u91cf\u662f\u591a\u6001\u7684\u3002\u800cjava\u4e2d\u4e0d\u652f\u6301\u591a\u91cd\u7ee7\u627f\u3002<br \/>\n\u62bd\u8c61\u7c7b\uff1a\u89c4\u5b9a\u4e00\u4e2a\u6216\u591a\u4e2a\u62bd\u8c61\u65b9\u6cd5\u7684\u7c7b\u672c\u8eab\u5fc5\u987b\u5b9a\u4e49\u4e3aabstract\u3002 \u3000\u3000\u4f8b\uff1a public abstract string getDescripition<br \/>\nJava\u4e2d\u7684\u6bcf\u4e00\u4e2a\u7c7b\u90fd\u662f\u4eceObject\u7c7b\u6269\u5c55\u800c\u6765\u7684\u3002<br \/>\nobject\u7c7b\u4e2d\u7684equal\u548ctoString\u65b9\u6cd5\u3002<br \/>\nequal\u7528\u4e8e\u6d4b\u8bd5\u4e00\u4e2a\u5bf9\u8c61\u662f\u5426\u540c\u53e6\u4e00\u4e2a\u5bf9\u8c61\u76f8\u7b49\u3002<br \/>\ntoString\u8fd4\u56de\u4e00\u4e2a\u4ee3\u8868\u8be5\u5bf9\u8c61\u7684\u5b57\u7b26\u4e32\uff0c\u51e0\u4e4e\u6bcf\u4e00\u4e2a\u7c7b\u90fd\u4f1a\u91cd\u8f7d\u8be5\u65b9\u6cd5\uff0c\u4ee5\u4fbf\u8fd4\u56de\u5f53\u524d\u72b6\u6001\u7684\u6b63\u786e\u8868\u793a\u3002 \u3000\u3000\uff08toString \u65b9\u6cd5\u662f\u4e00\u4e2a\u5f88\u91cd\u8981\u7684\u65b9\u6cd5\uff09<br \/>\n\u901a\u7528\u7f16\u7a0b\uff1a\u4efb\u4f55\u7c7b\u7c7b\u578b\u7684\u6240\u6709\u503c\u90fd\u53ef\u4ee5\u540cobject\u7c7b\u578b\u7684\u53d8\u91cf\u6765\u4ee3\u66ff\u3002<br \/>\n\u5c01\u88c5\uff1a\u5c31\u662f\u628a\u6570\u636e\u548c\u884c\u4e3a\u7ed3\u5408\u8d77\u5728\u4e00\u4e2a\u5305\u4e2d\uff09\u5e76\u5bf9\u5bf9\u8c61\u4f7f\u7528\u8005\u9690\u85cf\u6570\u636e\u7684\u5b9e\u73b0\u8fc7\u7a0b\uff0c\u4e00\u4e2a\u5bf9\u8c61\u4e2d\u7684\u6570\u636e\u53eb\u4ed6\u7684\u5b9e\u4f8b\u5b57\u6bb5\uff08instance field\uff09\u3002<br 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Java\u4e2d\u5bf9\u5185\u5b58\u7684\u5206\u914d\u662f\u52a8\u6001\u7684,\u5b83\u91c7\u7528\u9762\u5411\u5bf9\u8c61\u7684\u673a\u5236\uff0c\u91c7\u7528\u8fd0\u7b97\u7b26new\u4e3a\u6bcf\u4e2a\u5bf9\u8c61\u5206\u914d\u5185\u5b58\u7a7a\u95f4,\u800c\u4e14\uff0c\u5b9e\u9645\u5185\u5b58\u8fd8\u4f1a\u968f\u7a0b\u5e8f\u8fd0\u884c\u60c5\u51b5\u800c\u6539\u53d8\u3002\u7a0b\u5e8f\u8fd0\u884c\u4e2d,\u6bcf\u4e2a\uff0c Java\u7cfb\u7edf\u81ea\u52a8\u5bf9\u5185\u5b58\u8fdb\u884c\u626b\u63cf,\u5bf9\u957f\u671f\u4e0d\u7528\u7684\u7a7a\u95f4\u4f5c\u4e3a\u201d\u5783\u573e\u201d\u8fdb\u884c\u6536\u96c6\uff0c\u4f7f\u5f97\u7cfb\u7edf\u8d44\u6e90\u5f97\u5230\u66f4\u5145\u5206\u5730\u5229\u7528.\u6309\u7167\u8fd9\u79cd\u673a\u5236,\u7a0b\u5e8f\u5458\u4e0d\u5fc5\u5173\u6ce8\u5185\u5b58\u7ba1\u7406\u95ee\u9898\uff0c\u8fd9\u4f7fJava\u7a0b\u5e8f\u7684\u7f16\u5199\u53d8\u5f97\u7b80\u5355\u660e\u4e86,\u5e76\u4e14\u907f\u514d\u4e86\u4e86\u7531\u4e8e\u5185\u5b58\u7ba1\u7406\u65b9\u9762\u7684\u5dee\u9519\u800c\u5bfc\u81f4\u7cfb\u7edf\u51fa\u95ee\u9898\u3002\u800cC\u8bed\u8a00\u901a\u8fc7malloc()\u548cfree()\u8fd9\u4e24\u4e2a\u5e93\u51fd\u6570\u6765\u5206\u522b\u5b9e\u73b0\u5206\u914d\u5185\u5728\u548c\u91ca\u653e\u5185\u5b58\u7a7a\u95f4\u7684\uff0cC<ins>{<\/ins>}\u8bed\u8a00\u4e2d\u5219\u901a\u8fc7\u8fd0\u7b97\u7b26new\u548cdelete\u6765\u5206\u914d\u548c\u91ca\u653e\u5185\u5b58.\u5728C\u548cC<ins>{<\/ins>}\u8fd9\u79cd\u673a\u5236\u4e2d,\u7a0b\u5e8f\u5458\u5fc5\u987b\u975e\u5e38\u4ed4\u7ec6\u5730\u5904\u7406\u5185\u5b58\u7684\u4f7f\u7528\u95ee\u9898\u3002\u4e00\u65b9\u9762\uff0c\u5982\u679c\u5bf9\u5df1\u91ca\u653e\u7684\u5185\u5b58\u518d\u4f5c\u91ca\u653e\u6216\u8005\u5bf9\u672a\u66fe\u5206\u914d\u7684\u5185\u5b58\u4f5c\u91ca\u653e,\u90fd\u4f1a\u9020\u6210\u6b7b\u673a\uff1b\u800c\u53e6\u4e00\u65b9\u9762\uff0c\u5982\u679c\u5bf9\u957f\u671f\u4e0d\u7528\u7684\u6216\u4e0d\u518d\u4f7f\u7528\u7684\u5185\u5b58\u4e0d\u91ca\u653e, \u5219\u4f1a\u6d6a\u8d39\u7cfb\u7edf\u8d44\u6e90\uff0c\u751a\u81f3\u56e0\u6b64\u9020\u6210\u8d44\u6e90\u67af\u7aed.<br \/>\n(2) Java\u4e0d\u5728\u6240\u6709\u7c7b\u4e4b\u5916\u5b9a\u4e49\u5168\u5c40\u53d8\u91cf,\u800c\u662f\u5728\u67d0\u4e2a\u7c7b\u4e2d\u5b9a\u4e49\u4e00\u79cd\u516c\u7528\u9759\u6001\u7684\u53d8\u91cf\u6765\u5b8c\u6210\u5168\u5c40\u53d8\u91cf\u7684\u529f\u80fd\u3002<br \/>\n(3) Java\u4e0d\u7528goto\u8bed\u53e5,\u800c\u662f\u7528try-catch-finally\u5f02\u5e38\u5904\u7406\u8bed\u53e5\u6765\u4ee3\u66ffgoto\u8bed\u53e5\u5904\u7406\u51fa\u9519\u7684\u529f\u80fd.<br \/>\n(4) Java\u4e0d\u652f\u6301\u5934\u6587\u4ef6\uff0c\u800cC\u548cC<ins>{<\/ins>}\u8bed\u8a00\u4e2d\u90fd\u7528\u5934\u6587\u4ef6\u6765\u5b9a\u4e49\u7c7b\u7684\u539f\u578b,\u5168\u5c40\u53d8\u91cf\uff0c\u5e93\u51fd\u6570\u7b49,\u8fd9\u79cd\u91c7\u7528\u5934\u6587\u4ef6\u7684\u7ed3\u6784\u4f7f\u5f97\u7cfb\u7edf\u7684\u8fd0\u884c\u7ef4\u62a4\u76f8\u5f53\u7e41\u6742\u3002<br \/>\n(5) Java\u4e0d\u652f\u6301\u5b8f\u5b9a\u4e49\uff0c\u800c\u662f\u4f7f\u7528\u5173\u952e\u5b57final\u6765\u5b9a\u4e49\u5e38\u91cf,\u5728C<ins>{<\/ins>}\u4e2d\u5219\u91c7\u7528\u5b8f\u5b9a\u4e49\u6765\u5b9e\u73b0\u5e38\u91cf\u5b9a\u4e49\uff0c\u8fd9\u4e0d\u5229\u4e8e\u7a0b\u5e8f\u7684\u53ef\u8bfb\u6027.<br \/>\n(6) Java\u5bf9\u6bcf\u79cd\u6570\u636e\u7c7b\u578b\u90fd\u5206\u914d\u56fa\u5b9a\u957f\u5ea6\u3002\u6bd4\u5982,\u5728Java\u4e2d\uff0cint\u7c7b\u578b\u603b\u662f32\u4f4d\u7684,\u800c\u5728C\u548cC<ins>{<\/ins>}\u4e2d\uff0c\u5bf9\u4e8e\u4e0d\u540c\u7684\u5e73\u53f0,\u540c\u4e00\u4e2a\u6570\u636e\u7c7b\u578b\u5206\u914d\u4e0d\u540c\u7684\u5b57\u8282\u6570\uff0c\u540c\u6837\u662fint\u7c7b\u578b,\u5728PC\u673a\u4e2d\u4e3a\u4e8c\u5b57\u8282\u537316\u4f4d\uff0c\u800c\u5728VAX-11\u4e2d,\u5219\u4e3a32\u4f4d.\u8fd9\u4f7f\u5f97C\u8bed\u8a00\u9020\u6210\u4e0d\u53ef\u79fb\u690d\u6027\uff0c\u800cJava\u5219\u5177\u6709\u8de8\u5e73\u53f0\u6027(\u5e73\u53f0\u65e0\u5173\u6027).<br \/>\n(7) \u7c7b\u578b\u8f6c\u6362\u4e0d\u540c\u3002\u5728C\u548cC<ins>{<\/ins>}\u4e2d,\u53ef\u901a\u8fc7\u6307\u9488\u8fdb\u884c\u4efb\u610f\u7684\u7c7b\u578b\u8f6c\u6362\uff0c\u5e38\u5e38\u5e26\u6765\u4e0d\u5b89\u5168\u6027,\u800c\u5728Java\u4e2d\uff0c\u8fd0\u884c\u65f6\u7cfb\u7edf\u5bf9\u5bf9\u8c61\u7684\u5904\u7406\u8981\u8fdb\u884c\u7c7b\u578b\u76f8\u5bb9\u6027\u68c0\u67e5,\u4ee5\u9632\u6b62\u4e0d\u5b89\u5168\u7684\u8f6c\u6362.<br \/>\n(8) \u7ed3\u6784\u548c\u8054\u5408\u7684\u5904\u7406\u3002\u5728C\u548cC<ins>{<\/ins>}\u4e2d\uff0c\u7ed3\u6784\u548c\u8054\u5408\u7684\u6240\u6709\u6210\u5458\u5747\u4e3a\u516c\u6709,\u8fd9\u5c31\u5e26\u6765\u4e86\u5b89\u5168\u6027\u95ee\u9898\uff0c\u800c\u5728Java\u4e2d\u6839\u672c\u5c31\u4e0d\u5305\u542b\u7ed3\u6784\u548c\u8054\u5408,\u6240\u6709\u7684\u5185\u5bb9\u90fd\u5c01\u88c5\u5728\u7c7b\u91cc\u9762.<br \/>\n(9) Java\u4e0d\u518d\u4f7f\u7528\u6307\u9488\u3002\u6307\u9488\u662fC\u548cC<ins>{<\/ins>}\u4e2d\u6700\u7075\u6d3b\uff0c\u4e5f\u6700\u5bb9\u6613\u4ea7\u751f\u9519\u8bef\u7684\u6570\u636e\u7c7b\u578b.\u7531\u6307\u9488\u6240\u8fdb\u884c\u7684\u5185\u5b58\u5730\u5740\u64cd\u4f5c\u5e38\u4f1a\u9020\u6210\u4e0d\u53ef\u9884\u77e5\u7684\u9519\u8bef,\u540c\u65f6\u901a\u8fc7\u6307\u9488\u5bf9\u67d0\u4e2a\u5185\u5b58\u5730\u5740\u8fdb\u884c\u663e\u5f0f\u7c7b\u578b\u8f6c\u6362\u540e\uff0c\u53ef\u4ee5\u8bbf\u95ee\u4e00\u4e2aC++\u4e2d\u7684\u79c1\u6709\u6210\u5458,\u4ece\u800c\u7834\u574f\u5b89\u5168\u6027\u3002\u800cJava\u5bf9\u6307\u9488\u8fdb\u884c\u5b8c\u5168\u5730\u63a7\u5236\uff0c\u7a0b\u5e8f\u5458\u4e0d\u80fd\u76f4\u63a5\u8fdb\u884c\u4efb\u4f55\u6307\u9488\u64cd\u4f5c.<\/p>\n<h4><a name=\"JAVA%E7%9F%A5%E8%AF%86%E5%BA%93-%E5%8E%86%E5%8F%B2%E7%89%88%E6%9C%AC\"><\/a>\u5386\u53f2\u7248\u672c<\/h4>\n<p>1995\u5e745\u670823\u65e5\uff0cJava\u8bed\u8a00\u8bde\u751f<br \/>\n1996\u5e741\u6708\uff0c\u7b2c\u4e00\u4e2aJDK-JDK1.0\u8bde\u751f<br \/>\n1996\u5e744\u6708\uff0c10\u4e2a\u6700\u4e3b\u8981\u7684\u64cd\u4f5c\u7cfb\u7edf\u4f9b\u5e94\u5546\u7533\u660e\u5c06\u5728\u5176\u4ea7\u54c1\u4e2d\u5d4c\u5165JAVA\u6280\u672f<br \/>\n1996\u5e749\u6708\uff0c\u7ea68.3\u4e07\u4e2a\u7f51\u9875\u5e94\u7528\u4e86JAVA\u6280\u672f\u6765\u5236\u4f5c<br \/>\n1997\u5e742\u670818\u65e5\uff0cJDK1.1\u53d1\u5e03<br \/>\n1997\u5e744\u67082\u65e5\uff0cJavaOne\u4f1a\u8bae\u53ec\u5f00\uff0c\u53c2\u4e0e\u8005\u903e\u4e00\u4e07\u4eba\uff0c\u521b\u5f53\u65f6\u5168\u7403\u540c\u7c7b\u4f1a\u8bae\u89c4\u6a21\u4e4b\u7eaa\u5f55<br \/>\n1997\u5e749\u6708\uff0cJavaDeveloperConnection\u793e\u533a\u6210\u5458\u8d85\u8fc7\u5341\u4e07<br \/>\n1998\u5e742\u6708\uff0cJDK1.1\u88ab\u4e0b\u8f7d\u8d85\u8fc72,000,000\u6b21<br \/>\n1998\u5e7412\u67088\u65e5\uff0cJAVA2\u4f01\u4e1a\u5e73\u53f0J2EE\u53d1\u5e03<br \/>\n1999\u5e746\u6708\uff0cSUN\u516c\u53f8\u53d1\u5e03Java\u7684\u4e09\u4e2a\u7248\u672c\uff1a\u6807\u51c6\u7248\uff08J2SE\uff09\u3001\u4f01\u4e1a\u7248\uff08J2EE\uff09\u548c\u5fae\u578b\u7248\uff08J2ME\uff09<br \/>\n2000\u5e745\u67088\u65e5\uff0cJDK1.3\u53d1\u5e03<br \/>\n2000\u5e745\u670829\u65e5\uff0cJDK1.4\u53d1\u5e03<br \/>\n2001\u5e746\u67085\u65e5\uff0cNOKIA\u5ba3\u5e03\uff0c\u52302003\u5e74\u5c06\u51fa\u552e1\u4ebf\u90e8\u652f\u6301Java\u7684\u624b\u673a<br \/>\n2001\u5e749\u670824\u65e5\uff0cJ2EE1.3\u53d1\u5e03<br \/>\n2002\u5e742\u670826\u65e5\uff0cJ2SE1.4\u53d1\u5e03\uff0c\u81ea\u6b64Java\u7684\u8ba1\u7b97\u80fd\u529b\u6709\u4e86\u5927\u5e45\u63d0\u5347<br \/>\n2004\u5e749\u670830\u65e518:00PM\uff0cJ2SE1.5\u53d1\u5e03\uff0c\u6210\u4e3aJava\u8bed\u8a00\u53d1\u5c55\u53f2\u4e0a\u7684\u53c8\u4e00\u91cc\u7a0b\u7891\u3002\u4e3a\u4e86\u8868\u793a\u8be5\u7248\u672c\u7684\u91cd\u8981\u6027\uff0cJ2SE1.5\u66f4\u540d\u4e3aJava SE 5.0<br \/>\n2005\u5e746\u6708\uff0cJavaOne\u5927\u4f1a\u53ec\u5f00\uff0cSUN\u516c\u53f8\u516c\u5f00Java SE 6\u3002\u6b64\u65f6\uff0cJava\u7684\u5404\u79cd\u7248\u672c\u5df2\u7ecf\u66f4\u540d\uff0c\u4ee5\u53d6\u6d88\u5176\u4e2d\u7684\u6570\u5b57\u201c2\u201d\uff1aJ2EE\u66f4\u540d\u4e3aJava EE\uff0cJ2SE\u66f4\u540d\u4e3aJava SE\uff0cJ2ME\u66f4\u540d\u4e3aJava ME<br \/>\n2006\u5e7412\u6708\uff0cSUN\u516c\u53f8\u53d1\u5e03JRE6.0<br \/>\n2010\u5e749\u6708\uff0cJDK7.0\u5df2\u7ecf\u53d1\u5e03\uff0c\u589e\u52a0\u4e86\u7b80\u5355\u95ed\u5305\u529f\u80fd\u3002<\/p>\n<div><\/div>\n<\/div>\n<div id=\"labels-section\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>JAVA\u7b80\u4ecb 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