Unicode in netbean (with pulpcore)

I have problem this p开发者_Go百科roblem:

if am using a string like this "Đăng nhập" it wouldnt display properly,

but if i'm using escaped sequence like this "\u0110\u0103ng nh\u1EADp" it display just fine.

(i mean after compiled and run the applet).

Is there any way to make string like ""Đăng nhập" display properly?I'm using netbean 7.0.