{"id":624,"date":"2022-02-18T22:53:31","date_gmt":"2022-02-18T14:53:31","guid":{"rendered":"https:\/\/axinyi.xuenixiang.com\/?p=624"},"modified":"2022-02-18T22:56:24","modified_gmt":"2022-02-18T14:56:24","slug":"javase","status":"publish","type":"post","link":"https:\/\/axinyi.xuenixiang.com\/index.php\/2022\/02\/18\/javase\/","title":{"rendered":"JavaSE-\u7b2c\u4e00\u7ae0"},"content":{"rendered":"\n

\u7b2c\u4e00\u7ae0 Java\u6982\u8981<\/strong> <\/h1>\n\n\n\n

1.1 \u8ba1\u7b97\u673a\u53d1\u5c55\u53f2 <\/h2>\n\n\n\n

1.1.1 \u8bed\u8a00\u5206\u4e3a3\u4e2a\u9636\u6bb5:<\/strong> <\/h3>\n\n\n\n
  • \u7b2c\u4e00\u4ee3\uff1a\u673a\u5668\u8bed\u8a00<\/strong><\/li>
  • \u7b2c\u4e8c\u4ee3\uff1a\u4f4e\u7ea7\u8bed\u8a00<\/strong><\/li>
  • \u7b2c\u4e09\u4ee3\uff1a\u9ad8\u7ea7\u8bed\u8a00<\/strong><\/li><\/ul>\n\n\n\n

    1.2 Java\u7684\u53d1\u5c55\u53f2<\/strong> <\/h2>\n\n\n\n
    1. java<\/strong> \u662f\u4e00\u79cd\u8bed\u8a00\uff0c\u5177\u6709\u81ea\u5df1\u7684\u8bed\u6cd5\u548c\u6570\u636e\u7ed3\u6784<\/li>
    2. java<\/strong> \u6765\u81ea\u4e8esun<\/strong>\uff08\u88aboracle<\/strong> \u516c\u53f8\u6536\u8d2d\uff09\uff0csun<\/strong> \u6307\u7684\u662f\u65af\u5766\u798f\u5927\u5b66\u7f51\u7edc<\/li><\/ol>\n\n\n\n

      \u5177\u4f53\u53d1\u5c55\u5386\u7a0b<\/p>\n\n\n\n

      \u65f6\u95f4<\/th>\u63cf\u8ff0<\/th><\/tr><\/thead>
      1991-1995<\/td>\u539f\u540d\u79f0oak\u8f6f\u4ef6<\/td><\/tr>
      1995<\/td>\u66f4\u540d\u4e3ajava<\/td><\/tr>
      1996<\/td>\u53d1\u5e03jdk1.0<\/td><\/tr>
      1997<\/td>\u53d1\u5e03jdk1.1<\/td><\/tr>
      1998<\/td>\u53d1\u5e03jdk1.2\uff0c\u66f4\u540djava2(java\u7684\u7b2c\u4e8c\u7248\u672c)<\/td><\/tr>
      1999<\/td>Java\u5206\u4e3a 3 \u4e2a\u5927\u5757\uff1aj2se(\u6807\u51c6\u7248)\u3001j2ee(\u4f01\u4e1a\u7248)\u3001j2me(\u5fae\u578b\u7248)<\/td><\/tr>
      2004<\/strong><\/td>\u66f4\u540d jdk5.0(\u91cc\u7a0b\u7891\u7248\u672c)<\/strong><\/td><\/tr>
      2005<\/td>10 \u5468\u5e74\uff0c\u66f4\u540d javaSe\u3001javaEE\u3001javaME<\/td><\/tr>
      2014<\/strong><\/td>Jdk8.0 (\u7ef4\u62a4\u65f6\u95f4 2030-12)<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
      • JDK 5\uff1aenum\u3001\u6cdb\u578b\u3001\u81ea\u52a8\u88c5\u7bb1\u4e0e\u62c6\u7bb1\u3001\u53ef\u53d8\u53c2\u6570\u3001\u589e\u5f3a\u5faa\u73af\u7b49<\/li>
      • JDK 6\uff1a\u652f\u6301\u811a\u672c\u8bed\u8a00\u3001JDBC 4.0 API<\/strong><\/li>
      • JDK 7\uff1a\u652f\u6301 try-with-resources\u3001switch \u8bed\u53e5\u5757\u589e\u52a0 String \u652f\u6301\u3001NIO 2.0\u5305<\/li>
      • JDK 8\uff1alambda \u8868\u8fbe\u5f0f\u3001Stream API\u3001\u65b0\u7684\u65e5\u671f\u65f6\u95f4\u7684 API\u3001\u65b9\u6cd5\u5f15\u7528\u3001\u6784\u9020\u5668\u5f15\u7528<\/li><\/ul>\n\n\n\n
        • JDK9\uff1a\u6a21\u5757\u5316\u7cfb\u7edf\u3001jshell<\/li>
        • JDK10\uff1a\u5c40\u90e8\u53d8\u91cf\u7684\u7c7b\u578b\u63a8\u65ad<\/li>
        • JDK11\uff1aZGC \u7684\u5f15\u5165\u3001Epsilon GC<\/li>
        • JDK12\uff1aswitch \u8868\u8fbe\u5f0f\u3001Shenandoah GC\u3001\u589e\u5f3a G1<\/li>
        • JDK13\uff1aswitch \u8868\u8fbe\u5f0f\u5f15\u5165 yield\u3001\u6587\u672c\u5757<\/li>
        • JDK14\uff1ainstanceof \u6a21\u5f0f\u8bc6\u522b\u3001Records\u3001\u5f03\u7528 Parallel Scavenge + Serial GC \u7ec4\u5408\u3001\u5220\u9664 CMS GC<\/li><\/ul>\n\n\n\n

          1.2.1 javaSE\u3001javaEE\u3001javaME \u4e09\u8005\u95f4\u7684\u5173\u7cfb <\/h3>\n\n\n\n
          \"\"<\/figure>\n\n\n\n

          1.2.2 JAVA \u8bed\u8a00\u7684\u7279\u6027 <\/h3>\n\n\n\n
          • \u7b80\u5355\u6027\uff1a\u76f8\u5bf9\u4e8ec++\u8bed\u8a00<\/li>
          • \u9762\u5411\u5bf9\u8c61\uff1a\u7eaf\u9762\u5411\u5bf9\u8c61\u7684\u8bed\u8a00<\/li>
          • \u53ef\u79fb\u690d\uff1a\u4e00\u6b21\u7f16\u8bd1\uff0c\u5230\u5904\u8fd0\u884c(\u53ef\u4ee5\u8de8\u5e73\u53f0)<\/li>
          • \u5065\u58ee\u6027\uff1a\u81ea\u52a8\u56de\u6536\u5783\u573e GC<\/li>
          • \u591a\u7ebf\u7a0b\uff1a<\/li>
          • \u5b89\u5168\u6027\uff1a\u5f00\u6e90(\u5f00\u653e\u6e90\u4ee3\u7801)<\/li><\/ul>\n\n\n\n

            1.2.3 Java \u7684\u52a0\u8f7d\u6267\u884c <\/h3>\n\n\n\n
            \"\"<\/figure>\n\n\n\n

            1.3 \u5f00\u59cb\u7b2c\u4e00\u4e2a Java \u7a0b\u5e8f <\/h2>\n\n\n\n

            1.3.1 \u5e38\u7528\u7684 dos \u547d\u4ee4 <\/h3>\n\n\n\n
            \"\"<\/figure>\n\n\n\n
            1. cls \u6e05\u5c4f\u547d\u4ee4<\/li>
            2. dir \u67e5\u770b\u76ee\u5f55<\/li>
            3. cd \u8fdb\u5165\u76ee\u5f55 <\/li><\/ol>\n\n\n\n

              cd . \u5f53\u524d\u76ee\u5f55 <\/p>\n\n\n\n

              cd ..\u4e0a\u4e00\u7ea7\u76ee\u5f55 <\/p>\n\n\n\n

              cd \/ \u56de\u5230\u6839\u76ee\u5f55 <\/p>\n\n\n\n

              \"\"<\/figure>\n\n\n\n

              4.c: \u56de\u8f66 \u5207\u6362\u76d8\u7b26<\/p>\n\n\n\n

              \"\"<\/figure>\n\n\n\n

              5.mkdir \u521b\u5efa\u76ee\u5f55<\/p>\n\n\n\n

              \"\"<\/figure>\n\n\n\n

              1.3.2 \u5f00\u53d1\u73af\u5883\u642d\u5efa <\/h3>\n\n\n\n

              \u5b89\u88c5jdk8<\/p>\n\n\n\n

              \u8be6\u89e3jdk\u7684\u76ee\u5f55<\/strong><\/p>\n\n\n\n

              \"\"<\/figure>\n\n\n\n

              \u914d\u7f6e\u73af\u5883\u53d8\u91cf\uff1a<\/p>\n\n\n\n

              • \u914d\u7f6e path\uff1a\u5982\u679c\u6267\u884c\u67d0\u4e2a\u6587\u4ef6\u547d\u4ee4\uff0c\u4e0d\u9700\u8981\u5230\u547d\u4ee4\u6240\u5728\u7684\u8def\u5f84\u6267\u884c\uff0c\u53ef\u4ee5\u5728\u73af\u5883\u53d8\u91cf\u4e2d\u627e\u5230\u547d\u4ee4\u6240\u5728\u7684\u76ee\u5f55\u6267\u884c\u3002<\/li><\/ul>\n\n\n\n
                \"\"<\/figure>\n\n\n\n
                \"\"<\/figure>\n\n\n\n
                \"\"<\/figure>\n\n\n\n
                \"\"<\/figure>\n\n\n\n
                \"\"<\/figure>\n\n\n\n

                \u6d4b\u8bd5jdk8 \u5b89\u88c5\u662f\u5426\u6b63\u786e\uff1a<\/p>\n\n\n\n

                \u6ce8\u610f\uff1a\u9700\u8981\u91cd\u65b0\u6253\u5f00cmd \u9875\u9762<\/p>\n\n\n\n

                \"\"<\/figure>\n\n\n\n
                \"\"<\/figure>\n\n\n\n
                \"\"<\/figure>\n\n\n\n

                1.3.3 \u7f16\u5199\u4ee3\u7801HelloWorld.java <\/h3>\n\n\n\n
                • \u8bbe\u7f6e\u6587\u4ef6\u7684\u62d3\u5c55\u540d\u79f0<\/li><\/ul>\n\n\n\n
                  \"\"<\/figure>\n\n\n\n
                  • \u4f7f\u7528javac\uff08java complie\uff09\u7f16\u8bd1\u547d\u4ee4<\/li><\/ul>\n\n\n\n
                    \"\"<\/figure>\n\n\n\n
                    • \u6267\u884c\u65f6\u9700\u8981\u7684\u5c31\u662f\u5b57\u8282\u7801\u6587\u4ef6(.class)\u800c\u4e0d\u662f\u6e90\u6587\u4ef6(.java)<\/li><\/ul>\n\n\n\n

                      \u4f7f\u7528java\u6267\u884c\u547d\u4ee4<\/p>\n\n\n\n

                      \"\"<\/figure>\n\n\n\n
                      • java\u4ee3\u7801\u52a0\u8f7d\u548c\u6267\u884c\u7684\u8fc7\u7a0b<\/li><\/ul>\n\n\n\n
                        \"\"<\/figure>\n\n\n\n
                        • \u6e90\u4ee3\u7801<\/li><\/ul>\n\n\n\n
                          public class HelloWorld {\n    public static void main(String[] args){\n        System.out.println(\"HelloWorld\");\n    }\n}<\/code><\/pre>\n\n\n\n
                          • \u8be6\u89e3HelloWorld\u4ee3\u7801<\/li><\/ul>\n\n\n\n
                            \/**\n\tpublic\u8868\u793a\u516c\u6709\u7684\n\tclass\u7c7b\u7684\u5173\u952e\u5b57(java\u4e2d\u7684\u5173\u952e\u5b57\u90fd\u662f\u5c0f\u5199\u7684)\n\tHelloWorld\u8868\u793a\u7c7b\u540d\u79f0\uff1a\u6ce8\u610f\uff1a\u9996\u5b57\u6bcd\u5fc5\u987b\u5927\u5199\u7684(\u7f16\u7801\u89c4\u8303)\n*\/\npublic class HelloWorld {\n\t\/**\n\t\tstaic\u8868\u793a\u9759\u6001\u7684\n\t\tvoid\u8868\u793a\u65b9\u6cd5\u6ca1\u6709\u8fd4\u56de\u503c\n\t\tmain\u4e3b\u65b9\u6cd5\u540d\u79f0\n\t*\/\n    public static void main(String[] args){\n\t\t\/\/\u8f93\u51fa\u4fe1\u606f\uff0c\u4e00\u53e5\u4ee3\u7801\u5b8c\u6210\u5fc5\u987b\u4f7f\u7528\u5206\u53f7\u7ed3\u675f\n        System.out.println(\"HelloWorld\");\n    }\n}<\/code><\/pre>\n\n\n\n
                            1.3.4 java\u4e2d\u7684\u6ce8\u91ca <\/h3>\n\n\n\n
                            1. \u5355\u884c\u6ce8\u91ca\uff1a\/\/<\/li>
                            2. \u591a\u884c\u6ce8\u91ca\uff1a\/* \u6ce8\u91ca\u8bf4\u660e*\/<\/li>
                            3. \u6587\u6863\u6ce8\u91ca\uff1a\/**\u6ce8\u91ca\u8bf4\u660e *\/<\/li><\/ol>\n\n\n\n
                              \u6ce8\u610f\uff1a\u5355\u884c\u548c\u591a\u884c\u6ce8\u91ca\u5fc5\u987b\u8fdb\u5165\u6e90\u4ee3\u7801\u540e\u624d\u53ef\u4ee5\u770b\u5230<\/strong><\/p>\n\n\n\n
                              1.3.5 \u9762\u8bd5\u9898<\/h3>\n\n\n\n
                              • \u4e00\u4e2a\u6e90\u6587\u4ef6\u53ef\u4ee5\u7f16\u5199\u591a\u4e2a\u7c7b\u4ee3\u7801\u5417\uff1f<\/li>
                              • \u7b54\uff1a\u53ef\u4ee5\uff0c\u9700\u8981\u6ce8\u610f\uff0cpublic\u5173\u952e\u5b57\u53ea\u80fd\u51fa\u73b0\u4e00\u6b21\uff0c\u5e76\u4e14\uff0cpublic\u4fee\u6539\u7684\u7c7b\u540d\u79f0\u5fc5\u987b\u4e0e\u6e90\u6587\u4ef6\u540d\u79f0\u4e00\u81f4<\/strong><\/li><\/ul>\n\n\n\n
                                \"\"<\/figure>\n\n\n\n
                                <\/div><\/p>\n","protected":false},"excerpt":{"rendered":"
                                \u7b2c\u4e00\u7ae0 Java\u6982\u8981 1.1 \u8ba1\u7b97\u673a\u53d1\u5c55\u53f2 1.1.1 \u8bed\u8a00\u5206\u4e3a3\u4e2a\u9636\u6bb5: \u7b2c\u4e00\u4ee3\uff1a\u673a\u5668\u8bed\u8a00 \u7b2c\u4e8c\u4ee3\uff1a\u4f4e\u7ea7\u8bed\u8a00 \u7b2c\u4e09\u4ee3\uff1a\u9ad8\u7ea7\u8bed\u8a00  …<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[10],"tags":[],"_links":{"self":[{"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/posts\/624"}],"collection":[{"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/comments?post=624"}],"version-history":[{"count":9,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/posts\/624\/revisions"}],"predecessor-version":[{"id":654,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/posts\/624\/revisions\/654"}],"wp:attachment":[{"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/media?parent=624"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/categories?post=624"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/tags?post=624"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}