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Java Platform 1.2 Beta 4 |
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java.lang.Object | +--com.sun.java.swing.ButtonGroup
Initially, all buttons in the group are unselected. Once any button is selected, one button is always selected in the group. There is no way to turn a button programmatically to "off", in order to clear the button group. To give the appearance of "none selected", add an invisible radio button to the group and then programmatically select that button to turn off all the displayed radio buttons. For example, a normal button with the label "none" could be wired to select the invisible radio button.
Warning: serialized objects of this class will not be compatible with future swing releases. The current serialization support is appropriate for short term storage or RMI between Swing1.0 applications. It will not be possible to load serialized Swing1.0 objects with future releases of Swing. The JDK1.2 release of Swing will be the compatibility baseline for the serialized form of Swing objects.
Field Summary | |
protected Vector | buttons
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Constructor Summary | |
ButtonGroup()
Creates a new ButtonGroup. |
Method Summary | |
void | add(AbstractButton b)
Adds the button to the group. |
Enumeration | getElements()
Return all the buttons that are participating in this group. |
ButtonModel | getSelection()
Return the selected button model. |
boolean | isSelected(ButtonModel m)
Returns the selected value for the button. |
void | remove(AbstractButton b)
Removes the button from the group. |
void | setSelected(ButtonModel m,
boolean b)
Sets the selected value for the button. |
Methods inherited from class java.lang.Object | |
clone , equals , finalize , getClass , hashCode , notify , notifyAll , toString , wait , wait , wait |
Field Detail |
protected Vector buttons
Constructor Detail |
public ButtonGroup()
Method Detail |
public void add(AbstractButton b)
public void remove(AbstractButton b)
public Enumeration getElements()
public ButtonModel getSelection()
public void setSelected(ButtonModel m, boolean b)
public boolean isSelected(ButtonModel m)
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Java Platform 1.2 Beta 4 |
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