public class Matrix {
    private double[][] Wert;
    private int rows;
    private int columns;

    //"setup" initialisiert Matrix m
    public void Matrix(Matrix m, int rows, int columns){
        m.rows = rows;
        m.columns = columns;
        m.Wert = new double[rows][columns];
    }

    //Methode "setup" initialisiert eine variable Matrix
    public void Matrix(int rows, int columns){
        this.rows = rows;
        this.columns = columns;
        this.Wert = new double[rows][columns];
    }


public class Test {
	public static void main(String[] args) {
		Matrix a = new Matrix(4, 2)
	}
}