private void printMatrix() {

int n = matrix.length;

System.out.println("Matrix: ");

System.out.println(n);

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

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

System.out.print(matrix[i][j] + " ");

}

System.out.println();

}

System.out.println();

}

The above Java code use 2D array store the adjacency matrix and print the matrix. How do I change to use linked structure to print the matrix?

Thank you