I think you are using a Salesforce Enterprise Edition trial organization, or sandbox organization.In Enterprise Edition we cannot create classes.
This from the help & training link regarding Apex: "You can add, edit, or delete Apex using the Salesforce user interface only in a Developer Edition, a Salesforce Enterprise Edition trial organization, or sandbox organization. In a Salesforce production organization, you can only make changes to Apex by using the metadata API deploy call, the Force.com IDE, or the Force.com Migration Tool."
So you'll need to use a different tool if you're in the production environment.
I will suggest you to register for a developer account. It will give you full freedom to test almost all major feature of salesforce. Plus you can keep it as long as you want.
From setup --> Builder --> Develop --> Apex classes
or else goto Developer console,
Click on your name --> under Drop-down list --> Right click and open Developer console in new tab
After opening,
click File --> click New --> click Apex Class
Hope this might help you.
Thanks
I think you are using a Salesforce Enterprise Edition trial organization, or sandbox organization.In Enterprise Edition we cannot create classes.
This from the help & training link regarding Apex: "You can add, edit, or delete Apex using the Salesforce user interface only in a Developer Edition, a Salesforce Enterprise Edition trial organization, or sandbox organization. In a Salesforce production organization, you can only make changes to Apex by using the metadata API
deploy call, the Force.com IDE, or the Force.com Migration Tool."
So you'll need to use a different tool if you're in the production environment.
I will suggest you to register for a developer account. It will give you full freedom to test almost all major feature of salesforce. Plus you can keep it as long as you want.
http://www.developerforce.com/events/regular/registration.php?d=70130000000EjHb
Hope this helps you.
Thanks
Varaprasad
@For Support: varaprasad4sfdc@gmail.com