Java - How to navigate through object array with buttons -

i'm trying implement "previous" , "next" button. issue cannot figure out how navigate through object array buttons , display on fields.

to clarify button iterate through object array , display fields according pointer each click.

an example of want do:

button click

display myproduct @ pointer 0

button click

display myproduct @ pointer 1

button click

display myproduct @ pointer 2

so far i've managed this:

product[] myproduct = new product[]{         new product("dr.pepper", 5, 1.00),         new product("coca cola", 6, 1.00),         new product("fanta", 7, 1.00),         new product("sprite", 8, 1.00),         new product("redbull", 9, 1.00),         new product("orange juice", 10, 1.00)     };   if(source.equals(nextbutton)){            getnamefield.settext(myproduct[++pointer].getname());            getstocklevelfield.settext(string.valueof(myproduct[++pointer].getstocklevel()));           getpricefield.settext(string.valueof(myproduct[++pointer].getprice()));              }         }    

link examples:

object 1

object 2

you can see button works , iterates 1. want can iterate through of objects 1 one.

thanks in advance.

define new integer this:

int pointer = 0; 

this integer stores current viewed index of array.so in button click this:
a)for next: myproduct[++pointer].getname();
b)for previous: myproduct[--pointer].getname();

note:you must check pointer on each click less 0 previous , greater lenght of myproduct.