您的位置: 首页  >  文章  >  Exception in thread “main” java.lang.UnsupportedClassVersionError: com/crunchify/Main : Unsupported

Exception in thread “main” java.lang.UnsupportedClassVersionError: com/crunchify/Main : Unsupported

分类: 文章 • 2023-11-24 21:50:40

https://crunchify.com/exception-in-thread-main-java-lang-unsupportedclassversionerror-comcrunchifymain-unsupported-major-minor-version-51-0/

完美解决！！！！

Recently I faced this wired exception while running my Java application on Linux environment.

Javaa Error Message
1
2
3
4
5
java.lang.UnsupportedClassVersionError: com.crunchify.testClass :
Unsupported major.minor version 51.0
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClassCond(Unknown Source)
       .........................................

The only difference I noticed in about Java Version. I compiled all code on my laptop with version 7 and Linux had version 6. java.lang.UnsupportedClassVersionError happens because of a higher JDK during compile time and lower JDK during runtime.

Now how to solve it?

  1. Project -> Properties -> Java Compiler
  2. Enable project specific settings.
  3. Then select Compiler Compliance Level to 1.6 or 1.5, build and test your app.

Exception in thread “main” java.lang.UnsupportedClassVersionError: com/crunchify/Main : Unsupported

And that’s all.

Java Version and Versions
1
2
3
4
5
6
7
8
J2SE 8=52,
J2SE 7=51,
J2SE 6.0=50,
J2SE 5.0=49,
JDK 1.4=48,
JDK 1.3=47,
JDK 1.2=46,
JDK 1.1=45

The version numbers mentioned above are the version of the JRE the class file is compatible with. There is another way to fix this problem – try bundling your own required JVM with your application and set JAVA_HOME from your startup.shscript.

Would love to know what you think. Chime in and share it as a comment. Don’t forget to share this guide!

相关推荐