Thread: Java abstract

Could someone help me figure out what am I missing? It not printing out "Math" in my main class. Thanks

public abstract class Homework
{   
    private int pagesRead; 
    private String typeHomework;
 
    public Homework()
    {
        pagesRead = 0 ;
        typeHomework = "";
    }
    public void setPage(int page)
    {
        pagesRead = page;
    }
 
    public int getPage()
    {
        return pagesRead;
    }
 
 
    public void setType(String type)
    {
        typeHomework = type;
    }
 
    public String getType()
    {
        return typeHomework;
    }
 
    public abstract void createAssignment(int p);
 
 
}

public class MyMath extends Homework
{
    public MyMath()
    {
    }
 
    public void createAssignment(int p)
    {
        setPage(p);
        setType("Math");    
    }
 
    public String toString()
    {
        return getType() + " - " + getPage();
    }
}

public class testHomework
{
    public static void main(String[]args)
{
        MyMath math = new MyMath();
 
 
        System.out.println(math.toString());
 
    }
}

It print out nothing. Since I "setType("Math"); " won't it print out "Math"?

I forgot about calling the method, I thought it would call itself for some reason. Thanks you so much!