Could not find the main class JAR

Asked Mar 16 '18 at 10:12

Active Mar 16 '18 at 10:27

Viewed 35 times

I compile this:

"%JAVA_HOME%\bin\javac" -cp lib\* src\*.java -d classes
"%JAVA_HOME%\bin\jar" -cfmv jar\TestClient.jar Manifest.txt -C classes .

Manifest.txt contains:

Main-Class: JmsClient

In "classes" folder:

JmsClient.class
JmsClient$1.class

And I have this error:

Exception in thread "main" java.lang.UnsupportedClassVersionError: AluSamoNbiJmsClient : Unsupported major.minor version 52.0

Could not find the main class: JmsClient

edited Mar 16 '18 at 10:27

asked Mar 16 '18 at 10:12

rsa

Just to be sure, can you check that all class files are where they should be in the jar (open it in a zip viewer). Also, that the package declaration is correct. – kutschkem Mar 16 '18 at 10:18
Exception in thread "main" java.lang.UnsupportedClassVersionError: AluSamoNbiJmsClient : Unsupported major.minor version 52. And I have this exception – rsa Mar 16 '18 at 10:28
This I know what this means. You compiled with java 8 but executed with java 7 or lower. – kutschkem Mar 16 '18 at 10:35
I run with 1.8.0_144 and I compile with 1.8.0_162 How to solve? – rsa Mar 16 '18 at 10:39
Try running with 1.8.0_162 – kutschkem Mar 16 '18 at 10:42
It's not possible, because I run in production server – rsa Mar 16 '18 at 11:09
Then try compiling with 1.8.0_144 – kutschkem Mar 16 '18 at 11:11
https://stackoverflow.com/questions/22489398/unsupported-major-minor-version-52-0 – kutschkem Mar 16 '18 at 11:12
thanks kutschkem. i add flag -target 1.8 -source 1.8 and it's work! – rsa Mar 20 '18 at 15:57

Could not find the main class JAR

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