Tugas SDT 2, Operasi Array

OperasiArray.java

import java.util.Scanner;
class OperasiArray {
	Scanner masukan = new Scanner(System.in);
	public  void masukdata (float data[][]) {
		for (int i=0; i<3; i++){
			for (int j=0; j<3; j++){
				System.out.print("(" + (i + 1) + " . " + (j + 1) + ") :");
				data[i][j] = masukan.nextFloat();
			}
		}
	}

	public float[][] tambah(float AA[][], float BB[][]){
		float hasil[][] = new float[3][3];
		for (int i=0; i<3; i++)
			for (int j=0; j<3; j++)
				hasil[i][j] = AA[i][j] + BB[i][j];
		return hasil;
	}

	public float[][] kurang(float AA[][], float BB[][]){
		float hasil[][] = new float[3][3];
		for (int i=0; i<3; i++)
			for (int j=0; j<3; j++)
				hasil[i][j] = AA[i][j] - BB[i][j];
		return hasil;
	}

	public float[][] kali(float AA[][], float BB[][]){
		float hasil[][] = new float[3][3];

		for(int i=0; i<3; i++){
			for(int j=0; j<3; j++){
				hasil[i][j] = 0;
				for(int k=0; k<3; k++){
					hasil[i][j] += AA[i][k] * BB[k][j];
				}
			}
		}
		return hasil;
	}

	public void tampilData(float data[][], char nama){
		for (int i=0; i<3; i++){
			for (int j=0; j<3; j++)
				System.out.print("\t" + nama + "[" + (i + 1) + "][" + (j + 1) + "] = " + data[i][j] + "");
			System.out.println();
		}
	}

	public static void main(String args[]){
		float A[][] = new float[3][3];
		float B[][] = new float[3][3];
		float C[][] = new float[3][3];

		OperasiArray operasi = new OperasiArray();

		System.out.println("masukkan matriks A");
		operasi.masukdata(A);

		System.out.println("masukkan matriks B");
		operasi.masukdata(B);

		System.out.println("\n Data Matrik \n");
		operasi.tampilData(A, 'A');
		System.out.println("\n");
		operasi.tampilData(B, 'B');

		System.out.println("\n Operasi Matrik Penjumlahan (A+B) \n");

		C = operasi.tambah(A, B);
		operasi.tampilData(C, 'C');

		System.out.println("\n Operasi Matrik Pengurangan (A-B) \n");

		C = operasi.kurang(A, B);
		operasi.tampilData(C, 'C');

		System.out.println("\n Operasi Matrik Perkalian (A*B) \n");

		C = operasi.kali(A, B);
		operasi.tampilData(C, 'C');
	}
}