1. Create a JFrame two-dimensional array named frames that has 4 rows and 5 columns.
2. Create and store a JFrame in each entry of the frames.
3. Set the size of each frame to be 200x200
4. Set the location of each frame to be 200 * its array index (so the frame at the frames[2][3] will have y coordinate 400 and x coordinate 600).
5. Display each of the JFrames in frames. A nice "grid" of windows should appear.

Do anyone knows how to writes a two-d array like this, thank you very much