jad“版本不匹配:major.minor = 49.0，预期= 45.3"，.class文件的版本是什么? [英] jad "Version mismatch: major.minor = 49.0, expected = 45.3", what's version of .class file?

问题描述

我用jad来反编译该类，但是在AIX系统中，会抛出此类错误.

I used jad to decompile the class but in AIX system, such error thrown.

Version mismatch: major.minor = 49.0, expected = 45.3

我不知道.class文件的版本是什么，如何避免这种情况?

I don't know what's the version of .class file, how can I avoid this?

推荐答案

该类是为JDK5编译的，您的工具仅支持JDK1.1.

The class was compiled for JDK5, your tools only support JDK1.1.

您可能需要在该计算机上使用jad的较新版本(或整个JDK)(或为Java的较旧版本编译代码).

You probably need a newer version of jad (or the whole JDK) on that machine (or compile your code for an older version of Java).

正在使用的类文件格式的主要版本号:

J2SE 7 = 51 (0x33 hex),
J2SE 6.0 = 50 (0x32 hex),
J2SE 5.0 = 49 (0x31 hex),
JDK 1.4 = 48 (0x30 hex),
JDK 1.3 = 47 (0x2F hex),
JDK 1.2 = 46 (0x2E hex),
JDK 1.1 = 45 (0x2D hex).

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