import java.lang.*; import java.io.*; class MatMulti extends Thread { static int in1[][]; static int in2[][]; static int out[][]; static int n=2; int row; MatMulti(int i) { row=i; this.start(); } public void run() { int i,j; for(i=0;i<n;i++) { out[row][i]=0; for(j=0;j<n;j++) out[row][i]=out[row][i]+in1[row][j]*in2[j][i]; } } public static void main(String args[]) { int i,j; BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); System.out.print("Enter the order of Matrix : "); try { n=Integer.parseInt(br.readLine()); }catch(Exception e){} in1=new int[n][n]; in2=new int[n][n]; out=new int[n][n]; System.out.println("Enter the First Matrix : "); for(i=0;i<n;i++) { for(j=0;j<n;j++) { try { in1[i][j]=Integer.parseInt(br.readLine()); }catch(Exception e){} } } System.out.println("Enter the Second Matrix : "); for(i=0;i<n;i++) { for(j=0;j<n;j++) { try { in2[i][j]=Integer.parseInt(br.readLine()); }catch(Exception e){} } } MatMulti mat[]=new MatMulti[n]; for(i=0;i<n;i++) mat[i]=new MatMulti(i); try { for(i=0;i<n;i++) mat[i].join(); }catch(Exception e){} System.out.println("OUTPUT :"); for(i=0;i<n;i++) for(j=0;j<n;j++) System.out.println(out[i][j]); } } Is this a multithreaded matrix multiplication program?? it just contains 1 thread??