BD Computer Technology - Java Programming: SWING

java.lang.Object
 java.awt.Component
     java.awt.Container
         javax.swing.JComponent
             javax.swing.AbstractButton
                 javax.swing.JToggleButton
                     javax.swing.JCheckBox

Constructor Summary
`JCheckBox()` Creates an initially unselected check box button with no text, no icon.
`JCheckBox(Action a)` Creates a check box where properties are taken from the Action supplied.
`JCheckBox(Icon icon)` Creates an initially unselected check box with an icon.
`JCheckBox(Icon icon, boolean selected)` Creates a check box with an icon and specifies whether or not it is initially selected.
`JCheckBox(String text)` Creates an initially unselected check box with text.
`JCheckBox(String text, boolean selected)` Creates a check box with text and specifies whether or not it is initially selected.
`JCheckBox(String text, Icon icon)` Creates an initially unselected check box with the specified text and icon.
`JCheckBox(String text, Icon icon, boolean selected)` Creates a check box with text and icon, and specifies whether or not it is initially selected.

Method Summary
`protected void`	`configurePropertiesFromAction(Action a)` Factory method which sets the `ActionEvent` source's properties according to values from the Action instance.
`protected PropertyChangeListener`	`createActionPropertyChangeListener(Action a)` Factory method which creates the PropertyChangeListener used to update the ActionEvent source as properties change on its Action instance.
`AccessibleContext`	`getAccessibleContext()` Gets the AccessibleContext associated with this JCheckBox.
`String`	`getUIClassID()` Returns a string that specifies the name of the L&F class that renders this component.
`boolean`	`isBorderPaintedFlat()` Gets the value of the `borderPaintedFlat` property.
`protected String`	`paramString()` Returns a string representation of this JCheckBox.
`void`	`setBorderPaintedFlat(boolean b)` Sets the `borderPaintedFlat` property, which gives a hint to the look and feel as to the appearance of the check box border.
`void`	`updateUI()` Resets the UI property to a value from the current look and feel.

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

public class checkbox extends JApplet implements ItemListener{
JTextField text;
JCheckBox checkbox1, checkbox2, checkbox3, checkbox4;

public void init() {

Container frame1=getContentPane();
frame1.setLayout(new FlowLayout());

checkbox1=new JCheckBox("Check Box1");
checkbox2=new JCheckBox("Check Box2");
checkbox3=new JCheckBox("Check Boz3");
checkbox4=new JCheckBox("Check Box4");
text=new JTextField(20);

checkbox1.addItemListener(this);
checkbox2.addItemListener(this);
checkbox3.addItemListener(this);
checkbox4.addItemListener(this);

frame1.add(checkbox1);
frame1.add(checkbox2);
frame1.add(checkbox3);
frame1.add(checkbox4);

frame1.add(text);
}

public void itemStateChanged(ItemEvent e){
if(e.getItemSelectable()==checkbox1){
text.setText("Hello from Swing");
}else if(e.getItemSelectable()==checkbox2){
text.setText("Hello from Swing");
}else if(e.getItemSelectable()==checkbox3){
text.setText("Hello from Swing");
}else if(e.getItemSelectable()==checkbox4){
text.setText("Hello from Swing");
}

}
}

SWING - Check Boxes