How to display elements on JTable?

Question

Java

There is a code to display an array in a JTable, but an error occurs.
The JTable is created like this...

public static void setArrayJTable(JTable jTable){
        for (int i = 1; i < jTable.getRowCount(); i++){
            jTable.setValueAt("0 = ", i, 0);
        }
        for (int j = 2; j < jTable.getColumnCount(); j++){
            jTable.setValueAt("-x" + (j - 1), 0, j);
            jTable.setValueAt("1", 0, 1);
        }
    }

What could be the problem?

public static void setArrayJTable(Double[][] arrDouble){
        for (int i = 0; i < Weight; i++){
            for (int j = 0; j < Height; j++){
                arrayJTableClass.jTable.setValueAt(String.valueOf(arrDouble[i][j]), i + 1, j + 1);
            }
        }
    }

Answer 1

Here is a screenshot of that one. It should be. When displaying a matrix through this function, described above, the matrix is ​​displayed either incompletely, or it gives an error that the elements were not found, this is if the code is slightly changed.