Can't execute jar- file: "no main manifest attribute"
The "no main manifest attribute" error is usually caused by a missing or incorrect
Main-Class attribute in the manifest file of a Java
To fix this error, you need to ensure that the
.jar file has a valid
MANIFEST.MF file with a correctly defined
Main-Class attribute. The
Main-Class attribute specifies the class that contains the
main method, which is the entry point for the application.
Here is an example of a valid
MANIFEST.MF file with a
Manifest-Version: 1.0 Main-Class: com.example.MyClass
To create a
.jar file with a
MANIFEST.MF file, you can use the
jar tool that comes with the JDK (Java Development Kit). Here is an example of how to create a
.jar file with the
jar cfm MyJarFile.jar manifest.mf com/example/*.class
This command creates a
.jar file called
MyJarFile.jar that includes the
manifest.mf file and all the
.class files in the
I hope this helps. Let me know if you have any questions.