import java.awt.*;  
import java.applet.Applet;

public class ReturnDemo extends Applet {
   
    public void paint(Graphics g) {
        int answer = areaRectangle(30, 40);
        g.drawString("area of rectangle is " + answer, 10, 20);
   }

    private int areaRectangle(int side1, int side2) {
        int area = side1 * side2;
        return area;
    }
}