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Thread: JRadioButton Problems

  1. #1
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    Question JRadioButton Problems

    Hi,

    The code below compiles without any errors, but the JRadioButton's dont seem to respond when any are selected.

    In the actionsPerformed() method, if JButton 'next' is clicked:

    -then proceed to assign data from JTextFields
    -if either one of the JRadioButton's are selected, then..
    -assign data to variables
    -end of method.

    The JButton 'next' works correctly, but the JRadioButton's 'easy', 'mild' and 'hard' don't respond (no data are assigned to the variables 'questions' and 'level').

    Thanks in advanced.

    public void actionPerformed(ActionEvent e)
    {	
    	//if JButton 'next' is clicked..
    	if(e.getSource() == next)
    	{
    		//Get details from textfield..
    		name = String.valueOf(nameField.getText());
    		topic = String.valueOf(topicField.getText());
     
    		//also if JRadioButton 'easy' is selected..
    		if(e.getSource() == easy)
    		{
    			questions = layQuestions.getEasyQuestionList();
    			level = "Easy";
    		}
    		//or if JRadioButton 'mild' is selected..
    		else if(e.getSource() == mild)
    		{
    			questions = layQuestions.getEasyQuestionList();
    			level = "Mild";
    		}
    		//or if JRadioButton 'hard' is selected..
    		else if(e.getSource() == hard)
    		{
    			questions = layQuestions.getHardQuestionList();
    			level = "Hard";
    		}
    	}
    }


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: JRadioButton Problems

    Can you make and post a small complete program that compiles, executes and shows the problem?

    If the source of the event is next, how can the source be any of the other components?
    Only one if test will be true.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
    Super Moderator curmudgeon's Avatar
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    Default Re: JRadioButton Problems

    You can't have it both ways -- you can't have the ActionEvent's source be two different objects at the same time. What you should do is get the ButtonGroup object and find out from it which ButtonModel is the one that has been selected.

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    Default Re: JRadioButton Problems

    Thanks for the replies.

    So how would I go about using ButtonModel ? Would it be inside the actionPerformed() method, or in a separate method?

    Thanks

  5. #5
    Super Moderator Norm's Avatar
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    Default Re: JRadioButton Problems

    What have you tried? There are several examples in the API doc on how to use JRadioButtons.
    If you don't understand my answer, don't ignore it, ask a question.

  6. #6
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    Default Re: JRadioButton Problems

    Thanks for your help, I've got them working now

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