I just download new version of eclipe on to my computer and it create a folder called 'workspace'. Is there way i can put all my project from my old workspace in to new workspace? i tried copying from old workspace and pasting in to new workspace. than i open eclipse but no changes.

File -> Import -> Existing Projects into Workspace (under General) -> Next
-> Select root directory: use the Browse... button and browse to the Workspace directory which contains the projects to be imported.
-> from the Projects list select the projects you want to import into the Workspace
(or use the Select All button to select all projects that are not yet into your workspace).

If you've copied your projects to your target Workspace already, and selected this Workspace as root directory, then click Finish.
Otherwise make sure that the Copy projects into workspace checkbox is checked.