Char i = 'd' ; char j = 'e' ; int n = 2 ; String s = "d + e" ; String t = "de" ; String u = i + "" + n + j + "?

Char i = 'd' ; char j = 'e' ; int n = 2 ; String s = "d + e" ; String t = "de" ; String u = i + "" + n + j + "! " ; System. Out. println (i) ; System. Out. println (j) ; System. Out. println (s) ; System. Out. println (t) ; System. Out. println (u) ;