$1$ public class TaskThreadDemo $\{2$ public static void main $($String args $[])\{3$ String $[]$ sa $=\{"$a$","$X$","+",".")$; $4$ for $($String s: sa$)\{5$ Runnable ps $=$ new PrintChar $($s$,200)$; $6$ Thread ts $=$ new Thread $($ps$,$ s$)$; $7$ ts$.$start$()$; $8\}//$ end for each character $9\}//$end main $10\}//$ end class TaskThreadDemo $1112$ class PrintChar implements Runnable $\{13$ String ch; $14$ int times; $1516$ public PrintC XM$14$ har $($String c$,$ int n$)\{1718$ times $=$ n; $19\}//$ end constructor $2021$ public void run $()\{22$ for $($int i $=0$; i $<$ times; i$++)\{23$ System.out.print $($ch$)$; $24\}//$ end for loop $25\}//$ end method run $26\}//$ end class PrintChar ch $=$ C;