知識過客

檢視Java Binary File編譯版本 方法一： >javap -verbose Employee Compiled from "Employee.java" public class test.Employee extends java.lang.Object   SourceFile: "Employee.java"   minor version: 0    major version: 50   Constant pool: ..... 方法二： 使用文字工具開啟class檔案，檢視前面的binary code javac -target 1.1  ==>  CA FE BA BE 00 03 00 2D javac -target 1.2  ==>  CA FE BA BE 00 00 00 2E javac -target 1.3  ==>  CA FE BA BE 00 00 00 2F javac -target 1.4  ==>  CA FE BA BE 00 00 00 30 看起來新版本就往下推最後一碼了... :P

Character Entity Decimal Hex Rendering in Your Browser Entity Decimal Hex quotation mark = APL quote &quot; &#34; &#x22; " " " ampersand &amp; &#38; &#x26; & & & less-than sign &lt; &#60; &#x3C; < < < greater-than sign &gt; &#62; &#x3E; > > > Latin capital ligature OE &OElig; &#338; &#x152; Œ Œ Œ Latin small ligature oe &oelig; &#339; &#x153; œ œ œ Latin capital letter S with caron &Scaron; &#352; &#x160; Š Š Š Latin small letter s with caron &scaron; &#353; &#x161; š š š Latin capital letter Y with diaeresis &Yuml; &#376; &#x178; Ÿ Ÿ Ÿ modifier letter circumflex accent &circ; &#710; &#x2C6; ˆ ˆ ˆ small tilde &tilde; &#732; &#x2DC; ˜ ˜ ˜ en space &ensp; &#8194; &#x2002; em space &emsp; &#8195; &#x2003; thin space &thinsp; &#8201; &#x2009; zero width non-