how to make sql developer display non-English character correctly instread of displaying squares?
in sql developer--preference Environment--encoding is already set to 'UTF-8' Code Editor--fonts was set to 'Verdana' Database--NLS--Language was set to 'American' The data in db was written by Java in UTF-8 encoding (95% percent sure) What else I need to do to make it displayed correctly? Note: the squares characters are actually Chinese characters. Problem solved. Using font 'Microsoft YaHei' sqldeveloper uses the system fonts from the host machine. On my Win8 system there is a font that has glyphs for very many unicode characters and thus works for many unicode characters. 'Arial Unicode MS'