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\n \u4e4b\u524d\u7528Myeclipse\u7f16\u8bd1\u8fd0\u884cJava<\/a>\u6ca1\u6709\u95ee\u9898<\/span> \n

\u4f46\u662f\u7a81\u7136\u60f3\u7528\u7b80\u5355\u70b9\u7684NotePad++\u4ee5\u53cacmd\u76f4\u63a5\u7f16\u8bd1\u8fd0\u884cJava<\/p> \n

\u8fd9\u5c31\u8ba9\u6211\u5012\u817e\u4e86\u4e00\u665a\u4e0a<\/p> \n

\u5148\u8bf4\u4e0b\u95ee\u9898\u7684\u89e3\u51b3\uff0c\u518d\u603b\u7ed3\u4e0b\u67e5\u9605\u7684\u4e00\u4e9b\u77e5\u8bc6\u3002<\/p> \n

1.\u8fdb\u884cwin8<\/a>\u4e0bJava\u73af\u5883\u53d8\u91cf\u914d\u7f6e\uff0c\u5728"\u7cfb\u7edf<\/a>\u53d8\u91cf"\u4e0b\u8fdb\u884c\u5982\u4e0b\u914d\u7f6e\uff1a<\/p> \n

(1)\u65b0\u5efa->\u53d8\u91cf\u540d\uff1aJAVA_HOME\u53d8\u91cf\u503c\uff1aC:\\Program Files\\Java\\jdk1.8.0_05(\u8fd9\u53ea\u662f\u6211\u7684JDK\u5b89\u88c5\u8def\u5f84)<\/p> \n

(2)\u7f16\u8f91->\u53d8\u91cf\u540d\uff1aPath\u5728\u53d8\u91cf\u503c\u7684\u540e\u9762\u52a0\u4e0a\uff1a;%JAVA_HOME%\\jre\\bin;%JAVA_HOME%\\bin;<\/p> \n

(3)\u65b0\u5efa->\u53d8\u91cf\u540d\uff1aCLASSPATH\u53d8\u91cf\u503c\uff1a.;%JAVA_HOME%\\lib;%JAVA_HOME%\\lib\\tools.jar;%JAVA_HOME%\\lib\\dt.jar\uff08\u6ce8\u610f\u6700\u524d\u9762\u6709\u4e2a"."\uff09<\/p> \n

2.\u6d4b\u8bd5\u4e0b\u73af\u5883\u53d8\u91cf\u662f\u5426\u8bbe\u7f6e\u6210\u529f\uff1a\u6309\u201cWIN\u201d\u952e+R\u201d\u952e\uff0c\u5206\u522b\u8f93\u5165java<\/a>\uff0cjava<\/a>c\uff0cjava -version \u547d\u4ee4<\/p> \n

\u95ee\u98981\uff1a\u2018javac\u2019\u4e0d\u662f\u5185\u90e8\u547d\u4ee4\u6216\u5916\u90e8\u547d\u4ee4\uff0c\u4e5f\u4e0d\u662f\u53ef\u8fd0\u884c\u7684\u7a0b\u5e8f\u6216\u6279\u5904\u7406\u3002<\/p> \n

\u89e3\u51b3\uff1aClASSPATH\u4e2d\uff0c\u5f53\u524d\u76ee\u5f55\u201c.\u201d\u4e5f\u5fc5\u987b\u52a0\u5165\u5230\u8be5\u53d8\u91cf\u4e2d\u3002"classpath"\uff0c\u8be5\u53d8\u91cf\u7684\u542b\u4e49\u4e3ajava\u52a0\u8f7d\u7c7b(bin or lib)\u7684\u8def\u5f84\uff0c\u8981\u4f7f\u7528\u5df2\u7ecf\u7f16\u5199\u597d\u7684\u7c7b\uff0c\u524d\u63d0\u5f53\u7136\u662f\u80fd\u591f\u627e\u5230\u5b83\u4eec\u4e86\uff0cJVM\u5c31\u662f\u901a\u8fc7CLASSPTH\u6765\u5bfb\u627e\u7c7b\u7684\uff0c\u56e0\u6b64\u4e0d\u80fd\u5fd8\u4e86"."\u3002<\/p> \n

\u6ce8\uff1a\u5982\u679c\u5c06\u73af\u5883\u53d8\u91cf\u4fee\u6539\u597d\u4e86\u4e4b\u540e\uff0c\u4ecd\u51fa\u73b0\u4e0a\u8ff0\u95ee\u9898\uff0c\u90a3\u4e48\u53ef\u80fd\u662fcmd\u66f4\u65b0\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\uff0c\u5728\u522b\u5904\u770b\u5230\u5173\u95edCmd\u7a97\u53e3\uff0c\u91cd\u65b0\u6253\u5f00\u5c31\u597d\u4e86\uff0c\u4f46\u662f\u6211\u662f\u518d\u91cd\u542f\u4e00\u6b21\u7535\u8111\u4e4b\u540e\u624d\u597d~~<\/p> \n

\u95ee\u98982\uff1a\u89e3\u51b3\u4e86\u95ee\u98981\u4e4b\u540e\uff0c\u5bf9\u4e0eHelloWord.java \u8f93\u5165javac HelloWorld\u4e4b\u540e\u51fa\u73b0 UnsupportedClassVersionError \u9519\u8bef\uff1a<\/p> \n

HelloWorld Exception in thread "main" java.lang.UnsupportedClassVersionError:<\/p> \n

 HelloWorld : Unsupported major .minor version 52.0         <\/p> \n

at java.lang.ClassLoader.defineClass1(Native Method)        <\/p> \n

at java.lang.ClassLoader.defineClass(Unknown Source)         <\/p> \n

at java.security.SecureClassLoader.defineClass(Unknown Source)        <\/p> \n

\u3002\u3002\u3002\u3002<\/p> \n

\u8fd9\u4e2a\u5f88\u660e\u663e\u662f\u4e00\u4e2a\u7248\u672c\u4e0d\u652f\u6301\u7684\u95ee\u9898\uff0c\u7ecf\u8fc7\u641c\u7d22\u53d1\u73b0\u95ee\u9898\u6240\u5728\uff1a<\/p> \n

\u51fa\u73b0java.lang.UnsupportedClassVersionError \u9519\u8bef\u7684\u539f\u56e0\uff0c\u662f\u56e0\u4e3a\u6211\u4eec\u4f7f\u7528\u9ad8\u7248\u672c\u7684JDK\u7f16\u8bd1\u7684Java class\u6587\u4ef6\u8bd5\u56fe\u5728\u8f83\u4f4e\u7248\u672c\u7684JVM\u4e0a\u8fd0\u884c\uff0c\u6240\u62a5\u7684\u9519\u8bef\u3002<\/p> \n

\u56e0\u4e3a\uff0c\u9ad8\u7248\u672c\u7684JDK\u751f\u6210\u7684class\u6587\u4ef6\u4f7f\u7528\u7684\u683c\u5f0f\uff0c\u53ef\u80fd\u4e0e\u4f4e\u7248\u672c\u7684JDK\u7684.class\u6587\u4ef6\u683c\u5f0f\u4e0d\u540c\u3002\u8fd9\u6837\uff0c\u4f4e\u7248\u672c\u7684JVM\u65e0\u6cd5\u89e3\u91ca\u6267\u884c\u8fd9\u4e2a.class\u6587\u4ef6\uff0c\u4f1a\u629b\u51fajava.lang.UnsupportedClassVersionError\u4e0d\u652f\u6301\u7684Class\u7248\u672c\u9519\u8bef\u3002<\/p> \n

\u5206\u522b\u8f93\u5165java -version \u548cjavac -version<\/p> \n

\u679c\u7136\uff0cjava\u7248\u672c\u662f1.7\u800cjavac\u7248\u672c\u662f1.8\uff08o(\u256f\u25a1\u2570)o\u4f46\u662f\u6211\u7684JDK\u660e\u660e\u662f1.8\u7684\u54c7~~~~\uff09<\/p> \n

\u540e\u9762\u7684\u641c\u7d22\u95ee\u9898\u53d8\u6210\u4e86\uff0c\u5982\u4f55\u89e3\u51b3\u7248\u672c\u4e0d\u4e00\u81f4\u95ee\u9898\uff1a<\/p> \n

\u5728\u6ce8\u518c\u8868\u4e2d\u4fee\u6539\uff1aHKEY_LOCAL_MACHINE\/SOFTWARE\/JavaSoft\/Java Runtime Environment \u6539\u4e3a1.8<\/p> \n

\u518d\u6b21\u8fd0\u884cjava -version<\/p> \n

\"\\\"<\/p> \n

\u7ed9\u8dea\u4e86\u54c7~~~\u81f3\u6b64\u7ec8\u4e8e\u641e\u5b9a~~~~<\/p> \n

\u6709\u4e9b\u539f\u7406\u7684\u95ee\u9898\u6682\u4e14\u8fd8\u4e0d\u61c2 <\/p> \n

\u5f85\u4ee5\u540e\u5f00\u53d1~~~~\uff01\uff01\uff01<\/p> \n

\"\\\"<\/p> \n

\u603b\u7ed3\u51e0\u4e2a\u77e5\u8bc6\u70b9\u5427~~<\/p> \n

JDK\u3001JRE\u6709\u4ec0\u4e48\u533a\u522b\uff1a<\/p> \n

Jre   \u662fjava   runtime   environment\u7684\u7f29\u5199,   \u662fjava\u7a0b\u5e8f\u7684\u8fd0\u884c\u73af\u5883\u3002\u65e2\u7136\u662f\u8fd0\u884c\uff0c\u5f53\u7136\u8981\u5305\u542bjvm\uff0c\u4e5f\u5c31\u662f\u5927\u5bb6\u719f\u6089\u7684\u865a\u62df\u673a<\/a>\u5566\uff0c \u8fd8\u6709\u6240\u6709java\u7c7b\u5e93\u7684class\u6587\u4ef6\uff0c\u90fd\u5728lib\u76ee\u5f55\u4e0b\u6253\u5305\u6210\u4e86jar\u3002\u5927\u5bb6\u53ef\u4ee5\u81ea\u5df1\u9a8c\u8bc1\u3002\u81f3\u4e8e\u5728windows\u4e0a\u7684\u865a\u62df\u673a\u662f\u54ea\u4e2a\u6587\u4ef6\u5462\uff1f  Java\\jdk\\ jre\\bin\\client\u91cc\u9762\u662f\u4e0d\u662f\u6709\u4e00\u4e2ajvm.dll\u5462\uff1f\u90a3\u5c31\u662f\u865a\u62df\u673a\u3002<\/p> \n

\"\\\"<\/p> \n

Jdk   \u662fjava   development   kit\uff0c\u662fjava\u7684\u5f00\u53d1\u5de5\u5177\u5305\uff0c\u91cc\u9762\u5305\u542b\u4e86\u5404\u79cd\u7c7b\u5e93\u548c\u5de5\u5177\u3002\u5f53\u7136\u4e5f\u5305\u62ec\u4e86\u53e6\u5916\u4e00\u4e2aJre--------Java\\jre.  \u90a3\u4e48\u4e3a\u4ec0\u4e48\u8981\u5305\u62ec\u53e6\u5916\u4e00\u4e2aJre\u5462\uff1f\u800c\u4e14jdk\\jre\\bin\u540c\u65f6\u6709client\u548cserver\u4e24\u4e2a\u6587\u4ef6\u5939\u4e0b\u90fd\u5305\u542b\u4e00\u4e2ajvm.dll\u3002   \u8bf4\u660e\u662f\u6709\u4e24\u4e2a\u865a\u62df\u673a\u7684\u3002<\/p> \n


Java\\jdk\\bin\u8fd9\u4e2abin\u4e0b\u6709\u5404\u79cdjava\u7a0b\u5e8f\u9700\u8981\u7528\u5230\u7684\u547d\u4ee4\uff0c\u4e0eJava\\jdk\\jre\\bin\u6216\u8005Java\\jre\\bin\u7684bin\u76ee\u5f55\u6700\u660e\u663e\u7684\u533a\u522b\u5c31\u662fJava\\jdk\\bin\u4e0b\u624d\u6709javac.exe\uff0c\u8fd9\u4e00\u70b9\u5f88\u597d\u7406\u89e3\uff0c\u56e0\u4e3a jre\u53ea\u662f\u4e00\u4e2a\u8fd0\u884c\u73af\u5883\u800c\u5df2\u3002\u4e0e\u5f00\u53d1\u65e0\u5173\uff0c\u6b63\u56e0\u4e3a\u5982\u6b64\uff0c\u5177\u5907\u5f00\u53d1\u529f\u80fd\u7684jdk\u81ea\u5df1\u7684jre\u4e0b\u624d\u4f1a\u540c\u65f6\u6709client\u6027\u8d28\u7684jvm\u548cserver\u6027\u8d28\u7684 jvm\uff0c \u800c\u4ec5\u4ec5\u4f5c\u4e3a\u8fd0\u884c\u73af\u5883\u7684jre\u4e0b\u53ea\u9700\u8981client\u6027\u8d28\u7684jvm.dll\u5c31\u591f\u4e86\u3002<\/p> \n

\u6211\u4eec\u7528\u7684java\u547d\u4ee4\u5e76\u4e0d\u662f Java\\jdk\\bin\u76ee\u5f55\u4e0b\u7684\u800c\u662fJava\\jdk\\jre\\bin\u76ee\u5f55\u4e0b\u7684\u3002\u4e0d\u4fe1\u53ef\u4ee5\u505a\u4e00\u4e2a\u5b9e\u9a8c\uff0c\u5927\u5bb6\u53ef\u4ee5\u628aJava\\jdk\\bin\u76ee\u5f55\u4e0b\u7684java.exe\u526a\u5207\u5230\u522b\u7684\u5730\u65b9\u518d\u8fd0\u884c java\u7a0b\u5e8f\uff0c\u53d1\u73b0\u4e86\u4ec0\u4e48\uff1f\u4e00\u5207OK\uff01<\/p> \n

\u5982\u679cjava\u4e3a\u4e86\u63d0\u4f9b\u7ed9\u5927\u591a\u6570\u4eba\u4f7f\u7528\uff0c\u4ed6\u4eec\u662f\u4e0d\u9700\u8981jdk\u505a\u5f00\u53d1\u7684\uff0c\u53ea\u9700\u8981jre\u80fd\u8ba9java\u7a0b\u5e8f\u8dd1\u8d77\u6765\u5c31\u53ef\u4ee5\u4e86\uff0c\u90a3\u4e48\u6bcf\u4e2a\u5ba2\u6237\u8fd8\u9700\u8981\u624b\u52a8\u53bb\u8bbe\u7f6e\u73af\u5883\u53d8\u91cf\u591a\u9ebb\u70e6\u554a\uff1f<\/p> \n

\u6240\u4ee5\u5b89\u88c5jre\u7684\u65f6\u5019\u5b89\u88c5\u7a0b\u5e8f\u81ea\u52a8\u5e2e\u4f60\u628ajre\u7684java.exe\u6dfb\u52a0\u5230\u4e86\u7cfb\u7edf\u53d8\u91cf\u4e2d\uff0c\u56e0\u6b64\u53bbC:\\Windows\\system32\u4e0b\u9762\u53bb\u770b\u770b\u5427\uff0c\u53d1\u73b0\u6709\u4e00\u4e2ajava.exe\u3002<\/p> \n<\/div>","orderid":"0","title":"Java\u73af\u5883\u53d8\u91cf\u914d\u7f6e&\u89e3\u51b3\u7248\u672c\u4e0d\u4e00\u81f4\u95ee\u9898","smalltitle":"","mid":"0","fname":"JAVA","special_id":"0","bak_id":"0","info":"0","hits":"9097","pages":"1","comments":"0","posttime":"2017-09-19 13:15:59","list":"1505798159","username":"admin","author":"","copyfrom":"","copyfromurl":"","titlecolor":"","fonttype":"0","titleicon":"0","picurl":"https:\/\/www.cppentry.com\/upload_files\/","ispic":"0","yz":"1","yzer":"","yztime":"0","levels":"0","levelstime":"0","keywords":"Java<\/A> \u73af\u5883<\/A> \u53d8\u91cf<\/A> \u914d\u7f6e<\/A> \u89e3\u51b3<\/A> \u7248\u672c<\/A> \u4e00\u81f4<\/A> \u95ee\u9898<\/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":"113.108.110.181","lastfid":"0","money":"0","buyuser":"","passwd":"","allowdown":"","allowview":"","editer":"","edittime":"0","begintime":"0","endtime":"0","description":"Java\u73af\u5883\u53d8\u91cf\u914d\u7f6e&\u89e3\u51b3\u7248\u672c\u4e0d\u4e00\u81f4\u95ee\u9898","lastview":"1714072188","digg_num":"993","digg_time":"0","forbidcomment":"0","ifvote":"0","heart":"","htmlname":"","city_id":"0"},"page":"1"}