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javaradio-buttonswtjfaceradiobuttonlist

java radio buttons in jface automatically setting the first button to true

Here is a puzzler, every time I create a group of radio buttons in SWT/JFace, the first button is always true, but if create a standard button and call it to reset the radio button it will reset to being false. I would like it to be set to false as default. Has any encountered a problem like this and how to solve it? Thanks in advance

Solution

  • When creating a group of radio buttons, exactly one from them HAS to be selected at a time. By selecting a different button, the first one becomes unselected. Therefor, if you set selected true to second radio button, the first will be unselected.

    If you create a group of radio buttons, the first one is always selected by default. Use

    secondRadioButton.setSelection(true);

    to change the state...