Bind Ctrl+C to Copy function for eclipse on mac os x doesn't work I'm just moving my coding work from Windows to mac os x. It's really difficult to get used to the ctrl and command key behavior at beginning. 

Then I tried bind ctrl + C to Copy function instead of command + C in eclipse preferences setting. The setting was saved but took no effort. When I press ctrl + C on text and then pasted it, nothing happened.

I also don't want to switch the function of Ctrl and Command because many terminal operation still need the original Ctrl function.

Does Ctrl+C conflict with some system shortcut?

Could anybody tell me how to fix this? Or are there any better approaches?
Yes, there are better approaches.  Open:

System Preferences->Keyboard->Shortcuts

Highlight the App Shortcuts on left pane.  You will see a list of apps on the right.  Click the Plus sign and then select Eclipse for the app, type the menu item, type your new keyboard shortcut and you are done: