Java plugin "There is no site selected" Any idea on this?

trying to install checkstyle from : http://eclipse-cs.sourceforge.net/downloads.html when I click help->install software then add checkstyle link I got :There is no site selected

so next button is grayed, any idea 开发者_高级运维?

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I don't have eclipse here right now, but from memory you will need to specify the proxy server details in eclipse so that it can go past it. See this or this

hope that helps

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Did you read the page at http://eclipse-cs.sourceforge.net/downloads.html?

The site URL is http://eclipse-cs.sf.net/update/