Promedio de dos matrices.
import java.util.*;
public class p1{
public static void main (String[]Args){
int matriza[][] = new int [3][3];
int matrizb[][] = new int [3][3];
int i, j, sum1,sum2, prom;
i=0;
j=0;
sum1=0;
sum2=0;
prom=0;
Scanner dato = new Scanner (System.in);
System.out.println("Escribir datos de la matriz 1");
for (i=0;i<=2;i++){
for (j=0;j<=2;j++){
System.out.print("Escribir valor " + i + " , " + j + " : ");
matriza [i][j] = dato.nextInt();
sum1=sum1+matriza [i][j];
}
}
System.out.println("Escribir datos de la matriz 2"+"");
for (i=0;i<=2;i++){
for (j=0;j<=2;j++){
System.out.print("Escribir valor " + i + " , " + j + " : ");
matrizb [i][j] = dato.nextInt();
sum2=sum2+matrizb [i][j];
}
}
prom=(sum1+sum2)/2;
System.out.print("El promedio de las 2 matrices es :"+prom);
}
}