The jar file wouldnt run

[rohu meti]

I am begginer in Java. I tried to run Jar file from my desktop by double click or using command prompt. I created manifest and gave the class name [package name].[class name] of my java file.
With the command prompt I manage to create the class then jar file on desktop . The problem come when I try double click the jar file it just wont start. When I try to run it from the CMD Error ' the directory couldnt be found and some times It says main class couldnt be found. what shall i do??

[Tony Docherty]

What command did you issue from the command line?

[rohu meti]

Tony Docherty wrote:What command did you issue from the command line?

1. javac : [Youtube.java]
-----I got class name: Youtube.class
2. Jar cfm Youtube.jar manifest.txt example1.Youtube.class (as my class in inside the package name example1)
error comes

when i try writing with out package name
Jar cfm Youtube.jar manifest.txt Youtube.class
Youtube.jar would be created on desktop

however double clicking not work
when i give this cmd in the cmd promt;
java -jar Youtube.jar
error main class not found prompt


java -jar [name of my jar file].jar

[Tony Docherty]

2. Jar cfm Youtube.jar manifest.txt example1.Youtube.class (as my class in inside the package name example1)

Assuming you are running the command from the parent directory of example1 on a windows machine, that should be:

Jar cfm Youtube.jar manifest.txt example1\Youtube.class

You specify the file as a file path not as a Java package + name ie use '\' rather than '.'.