How to change the background of the master slide?
firstly we are going to creating a master slide for the slide show. To create slide show we are using SlideShow constructor and to create master slide we are using SlideMaster constructor. After the creation of the masterslide we are going to create the fill. this is used for setting background and for adding a picture. then We are using getFill() method to create the fill object. The setFillType(type) is used allow to set the type of fill. In this program, we are using picture type. Finally we are adding the picture into master slide in fill.