hey i wrote this java program. it will ask you for a string. after you input it,it will print the string. i want the string to be printed on the lcd. but how? this is the java code:

import javax.swing.JOptionPane;

class apples {
    public static void main(String args[]){
String fn = JOptionPane.showInputDialog("String: ");

    JOptionPane.showMessageDialog(null, fn, "LCD INTERFACE", JOptionPane.PLAIN_MESSAGE);

    }

}

So now where is your coding talking to the serial port (USB)?

Once you learn JAVA serial communications you should be able to modify the PS2 Keyboard Python code (make it JAVA) to communicate with the mcu LCD.

This would be a good utility to have so please post your working code.

Ralph