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Showing content from https://docs.oracle.com/en/java/javase/19/docs/api/java.desktop/java/awt/CheckboxGroup.html below:

CheckboxGroup (Java SE 19 & JDK 19)

All Implemented Interfaces:

Serializable

The

class is used to group together a set of

buttons.

Exactly one check box button in a CheckboxGroup can be in the "on" state at any given time. Pushing any button sets its state to "on" and forces any other button that is in the "on" state into the "off" state.

The following code example produces a new check box group, with three check boxes:

 setLayout(new GridLayout(3, 1));
 CheckboxGroup cbg = new CheckboxGroup();
 add(new Checkbox("one", cbg, true));
 add(new Checkbox("two", cbg, false));
 add(new Checkbox("three", cbg, false));
 

This image depicts the check box group created by this example:

Since:

1.0

See Also:

• Checkbox
• Serialized Form

• Constructor Summary

  Constructors

  Creates a new instance of CheckboxGroup.

• Method Summary

  Gets the current choice from this check box group.

  void

  void

  Sets the currently selected check box in this group to be the specified check box.

  Returns a string representation of this check box group, including the value of its current selection.

• Constructor Details
  • CheckboxGroup

    public CheckboxGroup()

    Creates a new instance of CheckboxGroup.

• Method Details
  • getSelectedCheckbox

    Gets the current choice from this check box group. The current choice is the check box in this group that is currently in the "on" state, or null if all check boxes in the group are off.

    Returns:

    the check box that is currently in the "on" state, or null.

    Since:

    1.1

    See Also:

    • Checkbox
    • setSelectedCheckbox(java.awt.Checkbox)

  • getCurrent

    Returns the current choice from this check box group or null if none of checkboxes are selected.

    Returns:

    the selected checkbox

  • setSelectedCheckbox public void setSelectedCheckbox(Checkbox box)

    If the check box argument is null, all check boxes in this check box group are deselected. If the check box argument belongs to a different check box group, this method does nothing.

    Parameters:

    box - the Checkbox to set as the current selection.

    Since:

    1.1

    See Also:

    • Checkbox
    • getSelectedCheckbox()

  • setCurrent

    Sets the currently selected check box in this group to be the specified check box and unsets all others.

    Parameters:

    box - the Checkbox to set as the current selection.

  • toString

    Returns a string representation of this check box group, including the value of its current selection.

    Overrides:

    toString in class Object

    Returns:

    a string representation of this check box group.

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