{"id":181,"date":"2013-01-03T00:04:25","date_gmt":"2013-01-02T16:04:25","guid":{"rendered":"http:\/\/lg.yusemo.com\/?p=181"},"modified":"2013-01-03T00:04:26","modified_gmt":"2013-01-02T16:04:26","slug":"jdk-version-class","status":"publish","type":"post","link":"https:\/\/lg.yusemo.com\/?p=181","title":{"rendered":"\u67e5\u770bclass\u6587\u4ef6\u7684jdk\u7f16\u8bd1\u5668\u7248\u672c"},"content":{"rendered":"
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u8001\u7684\u9879\u76ee\u8fdb\u884c\u7ef4\u62a4\u65f6\uff0c\u90fd\u662f\u5728\u539f\u6709\u7684jar\u5305\u7684\u57fa\u7840\u4e0a\u6dfb\u52a0class\u6216\u8005\u4fee\u6539class\uff0c\u800c\u4e0d\u662f \u91cd\u65b0\u7f16\u8bd1jar\u5305\uff0c\u8fd9\u5c31\u8981\u6c42\u6240\u4f7f\u7528\u7684jdk\u7248\u672c\u5fc5\u987b\u4e00\u81f4\uff0c\u5426\u5219\u8fd0\u884c\u65f6\u53ef\u80fd\u4f1a\u9047\u5230\u7248\u672c\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\u3002\u67e5\u770b\u4e00\u4e2aclass\u6240\u4f7f\u7528\u7684jdk\u7248\u672c\uff0c\u6709\u4e24\u79cd\u65b9\u5f0f\u3002<\/div>\n
\u7b2c\u4e00\u79cd<\/span>\u5c31\u662f\u8fd0\u7528jdk\u81ea\u5e26\u7684\u53cd\u7f16\u8bd1\u547d\u4ee4\uff1a<\/strong><\/div>\n
javap -verbose classname<\/div>\n
<\/div>\n
\u793a\u4f8b\u5982\u4e0b\uff1a<\/div>\n
D:\\WorkSpace\\ThinkingInJava4\\bin\\thinkInJava\\observerMod>javap -verbose Client<\/div>\n
\u4f1a\u8f93\u51fa\u4e00\u4e9b\u4fe1\u606f\uff08\u4e00\u90e8\u5206\u7c7b\u4e2d\u7684\u5185\u5bb9\u65e0\u7528\u5c31\u4e0d\u7c98\u8d34\u4e86\uff0c\u76f4\u63a5\u770b\u6587\u4ef6\u5934\u4fe1\u606f\uff09\uff0c\u5927\u81f4\u5982\u4e0b:<\/div>\n
\n
Compiled from “Client.java”<\/div>\n
public class thinkInJava.observerMod.Client extends java.lang.Object<\/div>\n
\u00a0 SourceFile: “Client.java”<\/div>\n
\u00a0 minor version: 0<\/div>\n
\u00a0 major version: 49<\/div>\n
\u00a0 Constant pool:<\/div>\n
const #1 = class\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 #2;\u00a0\u00a0\u00a0\u00a0 \/\/\u00a0 thinkInJava\/observerMod\/Client<\/div>\n<\/blockquote>\n
\u540e\u9762\u7701\u7565\u4e86\uff0c\u53ef\u4ee5\u770b\u5230\u524d\u9762\u6709\u4e24\u884c:<\/div>\n
minor version:0<\/div>\n
major version: 49<\/div>\n
<\/div>\n
\u7b2c\u4e8c\u79cd\u65b9\u5f0f\uff1a<\/span><\/strong><\/div>\n
\n
\n

\u7528UE\u6253\u5f00class\u6587\u4ef6\uff0c\u67e5\u770b\u7b2c\u4e00\u884c\u4fe1\u606f\uff1a<\/p>\n

CA FE BA BE 00 00 00\u00a031<\/strong>…..<\/p>\n<\/div>\n

\n
\"ue\u6253\u5f00class\u6587\u4ef6\u7b2c\u4e00\u884c\u5185\u5bb9\"<\/a>
ue\u6253\u5f00class\u6587\u4ef6\u7b2c\u4e00\u884c\u5185\u5bb9<\/figcaption><\/figure>\n<\/div>\n
\u5bf9\u5e94\u4e0b\u8868\uff0c\u53ef\u4ee5\u627e\u5230\u5bf9\u5e94\u7684jdk\u7f16\u8bd1\u7248\u672c<\/div>\n<\/blockquote>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
JDK \u7f16\u8bd1\u5668\u7248\u672c<\/strong><\/td>\ntarget \u53c2\u6570<\/strong><\/td>\n(\u5341\u516d\u8fdb\u5236 )minor.major<\/strong><\/td>\n(\u5341\u8fdb\u5236)\u00a0<\/strong>major.<\/strong>minor<\/strong><\/td>\n<\/tr>\n
jdk1.1.8<\/td>\n\u4e0d\u80fd\u5e26 target \u53c2\u6570<\/td>\n00 03 00 2D<\/td>\n45.3<\/td>\n<\/tr>\n
jdk1.2.2<\/td>\n\u4e0d\u5e26(\u9ed8\u8ba4\u4e3a -target 1.1)<\/td>\n00 03 00 2D<\/td>\n45.3<\/td>\n<\/tr>\n
jdk1.2.2<\/td>\n-target 1.2<\/td>\n00 00\u00a0\u00a0 00 2E<\/td>\n46.0<\/td>\n<\/tr>\n
jdk1.3.1_19<\/td>\n\u4e0d\u5e26(\u9ed8\u8ba4\u4e3a -target 1.1)<\/td>\n00 03 00 2D<\/td>\n45.3<\/td>\n<\/tr>\n
jdk1.3.1_19<\/td>\n-target 1.3<\/td>\n00 00\u00a0\u00a0 00 2F<\/td>\n47.0<\/td>\n<\/tr>\n
j2sdk1.4.2_10<\/td>\n\u4e0d\u5e26(\u9ed8\u8ba4\u4e3a -target 1.2)<\/td>\n00 00\u00a0\u00a0 00 2E<\/td>\n46.0<\/td>\n<\/tr>\n
j2sdk1.4.2_10<\/td>\n-target 1.4<\/td>\n00 00\u00a0\u00a0 00 30<\/td>\n48.0<\/td>\n<\/tr>\n
jdk1.5.0_11<\/td>\n\u4e0d\u5e26(\u9ed8\u8ba4\u4e3a -target 1.5)<\/td>\n00 00\u00a0\u00a0 00 31<\/td>\n49.0<\/td>\n<\/tr>\n
jdk1.5.0_11<\/td>\n-target 1.4 -source 1.4<\/td>\n00 00\u00a0\u00a0 00 30<\/td>\n48.0<\/td>\n<\/tr>\n
jdk1.6.0_01<\/td>\n\u4e0d\u5e26(\u9ed8\u8ba4\u4e3a -target 1.6)<\/td>\n00 00\u00a0\u00a0 00 32<\/td>\n50.0<\/td>\n<\/tr>\n
jdk1.6.0_01<\/td>\n-target 1.5<\/td>\n00 00\u00a0\u00a0 00 31<\/td>\n49.0<\/td>\n<\/tr>\n
jdk1.6.0_01<\/td>\n-target 1.4 -source 1.4<\/td>\n00 00\u00a0\u00a0 00 30<\/td>\n48.0<\/td>\n<\/tr>\n
jdk1.7.0<\/td>\n\u4e0d\u5e26(\u9ed8\u8ba4\u4e3a -target 1.6)<\/td>\n00 00\u00a0\u00a0 00 32<\/td>\n50.0<\/td>\n<\/tr>\n
jdk1.7.0<\/td>\n-target 1.7<\/td>\n00 00\u00a0\u00a0 00 33<\/td>\n51.0<\/td>\n<\/tr>\n
jdk1.7.0<\/td>\n-target 1.4 -source 1.4<\/td>\n00 00\u00a0\u00a0 00 30<\/td>\n48.0<\/td>\n<\/tr>\n
Apache Harmony 5.0M3<\/td>\n\u4e0d\u5e26(\u9ed8\u8ba4\u4e3a -target 1.2)<\/td>\n00 00\u00a0\u00a0 00 2E<\/td>\n46.0<\/td>\n<\/tr>\n
Apache Harmony 5.0M3<\/td>\n-target 1.4<\/td>\n00 00\u00a0\u00a0 00 30<\/td>\n48.0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
<\/div>\n","protected":false},"excerpt":{"rendered":"

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u8001\u7684\u9879\u76ee\u8fdb\u884c\u7ef4\u62a4\u65f6\uff0c\u90fd\u662f\u5728\u539f\u6709\u7684jar\u5305\u7684\u57fa\u7840\u4e0a\u6dfb\u52a0class\u6216\u8005\u4fee\u6539class\uff0c\u800c\u4e0d\u662f \u91cd\u65b0\u7f16\u8bd1jar\u5305\uff0c\u8fd9\u5c31\u8981\u6c42\u6240\u4f7f\u7528\u7684jdk\u7248\u672c\u5fc5\u987b\u4e00\u81f4\uff0c\u5426\u5219\u8fd0\u884c\u65f6\u53ef\u80fd\u4f1a\u9047\u5230\u7248\u672c\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\u3002\u67e5\u770b\u4e00\u4e2aclass\u6240\u4f7f\u7528\u7684jdk\u7248\u672c\uff0c\u6709\u4e24\u79cd\u65b9\u5f0f\u3002 \u7b2c\u4e00\u79cd\u5c31\u662f\u8fd0\u7528jdk\u81ea\u5e26\u7684\u53cd\u7f16\u8bd1\u547d\u4ee4\uff1a java…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"https:\/\/lg.yusemo.com\/index.php?rest_route=\/wp\/v2\/posts\/181"}],"collection":[{"href":"https:\/\/lg.yusemo.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lg.yusemo.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lg.yusemo.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lg.yusemo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=181"}],"version-history":[{"count":2,"href":"https:\/\/lg.yusemo.com\/index.php?rest_route=\/wp\/v2\/posts\/181\/revisions"}],"predecessor-version":[{"id":184,"href":"https:\/\/lg.yusemo.com\/index.php?rest_route=\/wp\/v2\/posts\/181\/revisions\/184"}],"wp:attachment":[{"href":"https:\/\/lg.yusemo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lg.yusemo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=181"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lg.yusemo.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}