Difference between sh file.sh and file.sh

Posted by RAS on Ask Ubuntu See other posts from Ask Ubuntu or by RAS
Published on 2012-10-16T10:23:14Z Indexed on 2012/10/16 11:24 UTC
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bash

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java

I have two questions :

What is the difference between executing sh filename.sh and filename.sh?
How can I make both of them giving me the same output ?

I'm asking this question as right now I'm facing a problem. I'm trying to run a Java + SWT application from terminal.

When I do filename.sh, it gives me the desired output. But when I do sh filename.sh or bash filename.sh, it throws me an error :

Exception in thread "main" java.lang.NoClassDefFoundError: MainForm/java
Caused by: java.lang.ClassNotFoundException: MainForm.java
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: MainForm.java.  Program will exit.

I know this question is already asked here but I'm still not clear about it.

I have gone through the following links :

What is the difference between ./ and sh to run a script?

Can scripts run even when they are not set as executable?

Can anyone help me with this?

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