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Thread: How to set the state of a radio button based on a configuration file.

  1. #1
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    Default How to set the state of a radio button based on a configuration file.

    Hi,
    I am using Java Swing to create a GUI. I have some radio buttons on a JFrame that gets opened when the user makes a certain selection. I want to read a config file to have the radio buttons selected or deselected when the form is opened to indicate the current state of the radio button based on the saved config file.
    How do I go about setting the radio button as selected (visibly selected) when I open up the JFrame?
    I was trying to use RadioButton.setSelected(True); but this doesn't actually visibly select the radio button.
    Any help would be greatly appreciated


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    Default Re: How to set the state of a radio button based on a configuration file.

    Can you show us an SSCCE that demonstrates the problem? Because setSelected(true) should definitely select the JRadioButton.
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    Default Re: How to set the state of a radio button based on a configuration file.

    Here is the code. I am new to java so I may be doing something fundamentally wrong. The main is called from another JFrame

    private void getInputSettings()
    {
    String TxString;
    String RxString;
    System.out.print("Initializing window\n");

    //Create an instance of the command interface
    CmdInterface cmdIf = new CmdInterface();

    //Get Input#1 enable status

    *Check the file. I have verified that this is done properly*

    if (enabled != 0)
    {
    System.out.print("Test message");
    input1EnableButton.setSelected(true);
    }
    else
    {
    input1EnableButton.setSelected(false);
    }
    }
    /**
    * @param args the command line arguments
    */
    public void manualCfg_start()
    {

    /* Create and display the form */
    java.awt.EventQueue.invokeLater(new Runnable() {
    public void run() {
    //Get the currently configured settings
    getInputSettings();
    new manualCfg().setVisible(true);

    }
    });
    }

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    Default Re: How to set the state of a radio button based on a configuration file.

    That really isn't an SSCCE. Here is an SSCCE that shows that setSelected() does indeed work:

    import javax.swing.JFrame;
    import javax.swing.JRadioButton;
     
    import java.awt.FlowLayout;
     
    public class ButtonTest {
     
        public ButtonTest() {
     
        	JFrame frame = new JFrame("Button Test");
        	frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        	frame.setSize(200,200);
     
        	JRadioButton button = new JRadioButton("JRadioButton");
        	button.setSelected(true);
     
        	frame.setLayout(new FlowLayout());
        	frame.add(button);
     
        	frame.setVisible(true);
        }
     
        public static void main(String[] args) {
           new ButtonTest();
        }
    }
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