For the Java people wondering how to accept the String matrix, here is a way,

` char c[][]=new char[n][n]; String s[]=new String[n];

     for(int i=0;i<n;i++){
         s[i]=sc.next();
                     }

     for(int i=0;i<n;i++){ 
         int k=0;

         for(int j=0;j<n;j++){

           c[i][j]=s[i].charAt(k);

           k++;
                         }}