Koding untuk Determinan pada Java

import java.io.*;
class determinan {
public determinan(){
System.out.println("~ Program Operasi Pada Matriks ~");
System.out.println("Matriks A : \n");
int baris = 3;
int kolom = 3;
int A[][] = new int[baris][kolom];
for(int i=0;i<baris;i++) {
System.out.print("|");
for(int j=0;j<kolom;j++) {
A[i][j] = Integer.parseInt(javax.swing.JOptionPane.showInputDialog(null, "Nilai A Baris ke- "+(i+1)+", Kolom ke-"+(j+1)+"="));
System.out.print(" "+A[i][j]+" "); }
System.out.println("|"); }
System.out.println("\n");
int dtr = ((A[0][0]*A[1][1]*A[2][2])+(A[0][1]*A[1][2]*A[2][0])+(A[0][2]*A[1][0]*A[2][1]))-
((A[0][1]*A[1][0]*A[2][2])+(A[0][0]*A[1][2]*A[2][1])+(A[0][2]*A[1][1]*A[2][0]));
System.out.println("Determinan: "+dtr); } }