Perkalian 2 Matriks Menggunakan Netbeans

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package Ngerjakan_Ulang_Soal_UTS;

/**
 *
 * @author Al-Fattah
 */
public class Soal1_Buat_Perkalian_Matriks {
    public static void main(String[] args){
       
    int [][] A={{1,2},{3,4}}; 
    int [][] B={{4,5},{6,7}}; 
    int [][] C= new int[2][2];
    int i,ii;
   
    int [][]X= {{(A [0] [0] * B [0] [0]),
                 (A[0][0]*B[0][1])},
                {(A[1][0]*B[0][0]),
                 (A[1][0]*B[0][1])}};
    int [][]Y= {{(A[0][1]*B[1][0]),
                 (A[0][1]*B[1][0])},
                {(A[1][1]*B[1][0]),
                 (A[1][1]*B[1][1])}};   
   
    for (i=0; i<2; i++){
        for(ii=0; ii<2; ii++)
            C[i][ii]=X [i][ii] + Y [i] [ii];
        }
            for (i=0; i<2; i++){
                for (ii=0; ii<2; ii++){
                    System.out.printf("%3d",C[i] [ii]);
                }
               
                System.out.println();
            }  
      
    }
  }