Скачать или смотреть How To DETERMINE the JAVA VERSION Used to Compile a Class File

Learn now to determine Java version used to compile a class file. Having trouble running code with your installed JRE/JDK, this video will show you how to determine the correct version of Java to use. We'll look at solutions in Windows and Linux, whether you have access to the JDK or not.

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Chapters

00:00 Introduction
00:23 Java unsupported major/minor version
01:23 Coding example to demonstrate the problem and the fix
03:17 Dump the contents of a Java class file in hex to read the version information
03:45 Convert hex to integer
04:41 Lookup table of Java version hex and decimal number values
06:02 Discuss application security issues around Java version of a class file errors java class file 52.0 java class file version 62 java class file version 61.0 java class file 61