unable to run the jar using flink

[karthik-swim]

I tried running the jar as a flink job using the following command. I am receiving a class not found exception.

org.apache.flink.client.program.ProgramInvocationException: The program's entry point class 'package.Main' was not found in the jar file.
at org.apache.flink.client.program.PackagedProgram.loadMainClass(PackagedProgram.java:422)
at org.apache.flink.client.program.PackagedProgram.(PackagedProgram.java:146)
at org.apache.flink.client.program.PackagedProgram.(PackagedProgram.java:68)
at org.apache.flink.client.program.PackagedProgram$Builder.build(PackagedProgram.java:590)
at org.apache.flink.client.cli.CliFrontend.buildProgram(CliFrontend.java:705)
at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:200)
at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:895)
at org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:968)
at org.apache.flink.runtime.security.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30)
at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:968)
Caused by: java.lang.ClassNotFoundException: package.Main
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at org.apache.flink.util.ChildFirstClassLoader.loadClass(ChildFirstClassLoader.java:69)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at org.apache.flink.client.program.PackagedProgram.loadMainClass(PackagedProgram.java:420)
... 9 more