JDeveloper 12c Sum of Two Numbers

Click on this link for Step by Step Document: Sum of Two Numbers 

Source Code:

    public String onAddClick() 
    {

        System.out.println("*** Add Button Click ****");

        int tot=0;

        if (getValue1().getValue()!=null && getValue2().getValue()!=null) {

            int a= Integer.parseInt(getValue1().getValue().toString());

            int b= Integer.parseInt(getValue2().getValue().toString());

            tot=a+b;

            sumValue.setValue(tot);

            UIRefresh(sumValue);    

        }

        return null;

    }

   

    public String onClearClick() 
    {

        System.out.println("*** Clear Button Click ****");

        value1.resetValue();

        value2.resetValue();

        sumValue.resetValue();

        UIRefresh(value1);

        UIRefresh(value2);

        UIRefresh(sumValue);

        return null;

    }

   

    public void UIRefresh(UIComponent obj) 
    {

        AdfFacesContext adfFacesContext = AdfFacesContext.getCurrentInstance();

        adfFacesContext.addPartialTarget(obj); 

    }