java - Creating jar from command prompt giving error -

java - Creating jar from command prompt giving error -

i have tried illustration same written reply link'how create .jar file using terminal' create jar file command prompt. getting error 'no main manifest attribute , in helloworld.jar'. problem? please help.i done same explained in method.

solved using instead 'jar cfe helloworld.jar helloworld helloworld.class' of 'jar cfm helloworld.jar manifest.txt helloworld.class'. guys!!

java jar