// The class must extend Menu or SimpleMenu (if you just need a single page)
public class TestMenu extends Menu {

    // Give the name of the menu (can be used if a page hasn't name)
    @Override
    public String getName ( ) {
        return ChatColor. LIGHT_PURPLE + "" + ChatColor. ITALIC + "DSMAPI testing menu" ;
    }

    // Supply the pages to the menu. Not required for SimpleMenu as the object itself is a page.
    @Override
    public Page [ ] getPages ( ) {
        Page [ ] pages = new Page [getPageCount ( ) ] ;

        // For each page of the menu, define its property
        pages [ 0 ] = new Page ( ) {
            // Give the name displayed at the top of the inventory
            @Override
            public String getName ( ) {
                return ChatColor. LIGHT_PURPLE + "" + ChatColor. ITALIC + "DSMAPI testing menu page 1" ;
            }

            // Supply the content of the inventory
            @Override
            public ItemStack [ ] getContent ( ) {

                // Methode to generate a 2D array of the shape of the inventory
                ItemStack [ ] [ ] content = getPageType ( ). getBlank2DArray ( ) ;

                // Add the items
                content [ 1 ] [ 4 ] = new ItemCreator (Material. APPLE ). setName ( "Give Apple" ). getItem ( ) ;
                content [ 2 ] [ 8 ] = new ItemCreator (Material. ARROW ). setName ( "Next Page" ). getItem ( ) ;

                // Flatten the 2D Array (the methods return a 1D Array)
                return getPageType ( ). flatten (content ) ;
            }

            // Give the page type (see PageType https://github.com/Dwight-Studio/DSMAPI/blob/1.16/src/main/java/fr/dwightstudio/dsmapi/pages/PageType.java)
            @Override
            public PageType getPageType ( ) {
                return PageType. CHEST ;
            }

            // Event fired when the player click
            @Override
            public void onClick (MenuView view, ClickType clickType, int slot, ItemStack itemStack ) {
                if (itemStack == null ) return ;

                switch (itemStack. getType ( ) ) {
                    case APPLE :
                        // Add a item to the player inventory
                        view. getPlayer ( ). getInventory ( ). addItem ( new ItemStack (Material. APPLE ) ) ;
                        break ;
                    case ARROW :
                        // Display the next page
                        view. nextPage ( ) ;
                        break ;
                }
            }
        } ;

        // Do the same for the other pages

       ...

        // Return the array
        return pages ;
    }

    // Give the number of pages
    @Override
    public int getPageCount ( ) {
        return 3 ;
    }
}
 

// The returned object can be used to modify the inventory view. The int is the index of the page to be show
MenuView view = new TestMenu ( ). open (player, 0 ) ;