How to add control buttons using Java thorugh serial port?

Question

Hi everyone,
I'm new to this forum.
I have some questions on Java and serial port.
I want to write a Java program to control my robot, through serial port. For example, when I click "Forward", the robot will go forward, and so on.
Now I already have the buttons, so next I would like to ask how to interface the buttons with the serial port.
I already have all the javax.comm things installed.
below is the code for my buttons:
import java.awt.*;
public class ControlButtons extends java.applet.Applet
     GridLayout myLayout = new GridLayout(3, 3);
     Button button1 = new Button(" ");
     Button buttonForward = new Button("Forward");
     Button button2 = new Button(" ");
     Button buttonLeft = new Button("Left");
     Button buttonStop = new Button("Stop");
     Button buttonRight = new Button("Right");
     Button button3 = new Button(" ");
     Button buttonReverse = new Button("Reverse");
     Button button4 = new Button(" ");
     public void init()
          setLayout(myLayout);
          add(button1);
          button1.setVisible(false);
          add(buttonForward);
          add(button2);
          button2.setVisible(false);
          add(buttonLeft);
          add(buttonStop);
          add(buttonRight);
          add(button3);
          button3.setVisible(false);
          add(buttonReverse);
          add(button4);
          button4.setVisible(false);
}Now I would like to ask for direction on how to add in the code to make it work with serial port.
Thanks

Answer 1

The plan is, I have a robot device connected to the serial port.We don't know anything about that device. We don't know how to control it. We don't know what you have to write to the device to make it do anything. Only you know what.
For example, when I click "Forward", the robot will go forward, and so on.So what do you have to send to make it do that? and same for the other buttons.
Next, you need to work out from the javax.comm API how to open the serial port and send data to it. This is a standard exercise in learning a new API. You must be able to do this. Again and again.
But the program is useless. The button can be clicked, but didn't do anything.Because (a) they have no ActionListeners and (b) there is no code to send anything to the serial port.
You have to write all that. So you also have to look up ActionListener in the Java API and how to attach it to a button. You can do that. We all do that kind of thing every day.
So next I would like to ask how to interface the buttons with the serial port.You've been asking nothing else since you started, but you've also only done enough investigation of your own to create the buttons. That's only the start.
The problem is what method and command should I use to make those buttons actually functioning.See above. You've been told part of it several times. The rest only you can answer, because it's your robot.