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Thread: Refreshing Variables Displayed on a JPanel

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    Default Refreshing Variables Displayed on a JPanel

    I have a small app used to display a score for two players and area to put in scores that should be taken away from the total, for use in a game of darts.

    I have a button that when pressed, initiates a small piece of code to add up the three scores and take them away from the total, however, the total remains at the starting 501 on the JPanel and the scores are not deducted.

    I have printed the value out to make sure that it is working as it should which works fine.

    Any help would be appreciated and just shout if you would like to see some code.

    Many thanks in advance, Rob.


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    Default Re: Refreshing Variables Displayed on a JPanel

    Can you post the code you are dealing with, only the code which you believe to be relevant though.
    Please use [highlight=Java]//code goes here...[/highlight] tags when posting your code

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    Default Re: Refreshing Variables Displayed on a JPanel

    Okay, here is the if statement after the click takes place on the "Ok" button, this is what I believe to be relevant:

    @Override
    		public void actionPerformed(ActionEvent e) 
    		{
    			// TODO Auto-generated method stub
    			if(e.getSource () == button1)
    			{
    				String Player1T1 = P1T1.getText();
    				String Player1T2 = P1T2.getText();
    				String Player1T3 = P1T3.getText();
     
    				int P1Throw1 = Integer.parseInt(Player1T1);
    				int P1Throw2 = Integer.parseInt(Player1T2);
    				int P1Throw3 = Integer.parseInt(Player1T3);
     
    				P1Total = P1Throw1 + P1Throw2 + P1Throw3;
    				P1S = 501 - P1Total;
    			}

    I am sure that what I am doing is long winded, P1S is the score variable and in the code above this, it is an int set to 501 and then parsed to a string to be displayed on the JPanel.

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    Default Re: Refreshing Variables Displayed on a JPanel

    You need to re-set the JTextField text.
    Check out the API for JTextField, but the following method in particular:
    JTextField
    Please use [highlight=Java]//code goes here...[/highlight] tags when posting your code

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    Default Re: Refreshing Variables Displayed on a JPanel

    Okay, thank you, I will do some more research of my own before re-posting. I think what I am struggling to find out is how to change items on the JPanel once the button has been clicked, I know how to make a Dialogue Box appear with relevant information but not to change the original Panel.

    Thank you for the link. For now, I will set this as solved.

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    Default Re: Refreshing Variables Displayed on a JPanel

    I thought my link was pretty self explanatory to be honest
    To update the text, all you need to do is invoke setText("New Text Goes Here") on your JTextField object, and It should update the text.

    As for dialogue boxes, refer to this tutorial;
    Java Tutorials
    Please use [highlight=Java]//code goes here...[/highlight] tags when posting your code

  7. The Following User Says Thank You to newbie For This Useful Post:

    StandbyExplosion (August 24th, 2011)

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    Wink Re: Refreshing Variables Displayed on a JPanel

    Ahh I see, sorry for the misunderstanding
    I will give it a go in the morning :-)
    Many thanks for your help and links!

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