I already have word wrap for Eclipse PHP (How can I get word wrap to work in Eclipse PDT for PHP files?). What about Eclipse Java? Is there a similar tool to wrap Java code lines?
Ctrl+Shift+F will format a file in Eclipse, breaking long lines into multiple lines and nicely word-wrapping comments. You can also highlight just a section of text and format that.
I realize this is not an automatic soft/hard word wrap, but I don't think the question was asking for anything fancy.