Debug beginer JAVA graphics problem Net Beans

I am a JAVA beginner trying to make a simple application that does graphing. I am working in Net Beans so whatever work you do needs to be done in Net Beans. I am have a few problems, I guess someone that knows what they are doing could fix it in less than an hour. These are the problems: 1. When the application is started, the legends and grid lines are not shown, they do show after the "Draw" button is pressed but the goal is for them to appear when the program is started. 2. I doubt that I have the panels set up properly to separate the graphics area from the UI area (buttons and fields) because when I run the app the panels are sized and positioned different than they are in. Please show the proper way to arrange that. I am looking for someone that can help me with further problems as I progress on a regular basis.