Can't Assign Value

[kvarnerexpress 0]

First of all, bear with me. Only on my 3rd week of java programming, so stupid error will occuor

 

Lets start with the code in question:

 

Code:

 

public Matrix multiplyMatrix(Matrix B)    {        if(coln != B.returnRowlength())        {        Matrix local = new Matrix(rows, B.returnColnlength());        int value = 0;            for(int i = 0; i < rows; i++) // Controls row count            {                for(int j = 0; j < B.returnColnlength(); j++) // Control coln count                {                    for(int k = 0; k < coln; k++)                    {                        value = value + (array[i][k] * B.returnValue(k,j));                     local[i][j] = value;                    }                }            }            return local;        }        else        {              System.out.print("Dimension does not match. Multiplay function cannot be executed.");        }    }

The problem is within the: local[j] = value;

I get this error message: array required, But matrix found

local is an array, so why does it say array required?

 

Thanks,kvarnerexpress

[beeseven 0]

APCS in Java? I'm in that class, too... and we just got that problem today. I haven't finished it but basically your problem is that local is an object, not an array. Arrays are special, so they can be accessed using []'s, but objects can't. What I did for that part was to make local a two dimensional array (int[][] local = new int[number of rows in a][number of cols in b]) and a constructor for the Matrix class that took a two dimensional array argument:

int[][] data;public Matrix(int[][] a){   data = a;}

Then at then end I put "return new Matrix(local)"