java help

[Aramil of Elixia]

so im trying to make a virtual iphone but i dont know how to convert the current size to inches (im not even sure what measurements im using for this i think its pixels.) this is the code im using:

JLabel textLabel = new JLabel("I'm a label in the window",SwingConstants.CENTER);
textLabel.setPreferredSize(new Dimension(450, 250));

and i need it to be 4.5 inches tall by 2.25 inches wide

[naraku9333]

Maybe multiply the size in inches by the DPI of the screen?

[Aramil of Elixia]

whats dpi?

[naraku9333]

Dots per inch

[Aramil of Elixia]

so what do i need to multiply by to get the dpi?