I found some handy keyboard shortcuts for working with Eclipse (these are actually part of the general text editor component, so they work with pretty much any editor including the cfeclipse editor)

• Alt+Up - Swap the current line with the line above it
• Alt+Down - Swap the current line with the one below it
• Ctrl+D - delete the current line
• Shift+Enter - adds a blank line below the current one
• Ctrl+Shift+Enter - adds a blank line above the current one

You can find more keyboard shortcuts by going to Window - Preferences - General - Keys