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Bug
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Resolution: Fixed
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P4
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1.3.0
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b24
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x86
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windows_nt
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Verified
Name: skT45625 Date: 04/19/2000
>java -version
java version "1.1.8"
Occurs as well in the 1.3rc2 and 1.3rc3 releases(see comments)
Run the class defined below by opening the html file below in appletviewer. The
checkboxes numbered 4 and 5 are in a single group. Try clicking twice on any one
of them. The text field on the screen displays the event. You will see that the
second click on the same checkbox in a group returns the ItemEvent value
Deselected, while the checkbox itself remains selected. The second click should
return value Selected only, or, should not return any value since it does not
result in a change of state at all.
---------------------------------HTML to start the applet-----------------------
<html>
<head>
<meta http-equiv="Content-Type"
content="text/html; charset=iso-8859-1">
<meta name="GENERATOR" content="Microsoft FrontPage Express 2.0">
<title>Assignment Six: Checkboxes And Radiobuttons</title>
</head>
<body bgcolor="#FFFFFF">
<p>Here is the output of my program:</p>
<p><applet code="CheckBoxesRadioButtons.class" width="256"
height="128"></applet></p>
</body>
</html>
------------------------------------SOURCE CODE---------------------------------
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class CheckBoxesRadioButtons extends Applet {
private int numobjects;
public void init () {
numobjects = 3; // Number of checkboxes and radiobuttons
to be displayed
setBackground(Color.yellow);
setLayout(new FlowLayout(FlowLayout.CENTER,10,10));
TextField txtfld = new TextField("",20);
add(txtfld);
for (int i=1 ; i<=numobjects ; i++) {
add(new MyButton("Button"+i, txtfld));
add(new MyCheckBox("Checkbox"+i, txtfld));
}
CheckboxGroup chkboxgrp = new CheckboxGroup();
add(new MyCheckBoxInGrp(chkboxgrp, "Checkbox"+(numobjects+1), txtfld));
add(new MyCheckBoxInGrp(chkboxgrp, "Checkbox"+(numobjects+2), txtfld));
setVisible(true);
}
}
class MyButton extends Button {
public MyButton ( String buttontext, final TextField txtfld ) {
super(buttontext);
setSize(15,15);
addActionListener(
new ActionListener() {
public void actionPerformed( ActionEvent e) {
txtfld.setText(getLabel());
}
} // end anonymous class
); // end call to addActionListener
}
}
class MyCheckBox extends Checkbox {
public MyCheckBox ( String checkboxtext, final TextField txtfld ) {
super(checkboxtext, false);
setSize(15,15);
addItemListener(
new ItemListener() {
public void itemStateChanged(ItemEvent e) {
if ( e.getStateChange() == e.SELECTED )
txtfld.setText(getLabel() + " Selected");
else
if ( e.getStateChange() == e.DESELECTED )
txtfld.setText(getLabel() + " Deselected");
}
} // end anonymous class
); // end call to addItemListener
}
}
class MyCheckBoxInGrp extends MyCheckBox {
public MyCheckBoxInGrp ( CheckboxGroup ingrp, String checkboxtext, final
TextField txtfld ) {
super(checkboxtext, txtfld);
setCheckboxGroup(ingrp);
//removeItemListener(getItemListener());
//removeItemListener();
/*
addItemListener(
new ItemListener() {
public void itemStateChanged(ItemEvent e) {
txtfld.setText(getLabel() + " Selected");
}
} // end anonymous class
); // end call to addItemListener
*/
}
}
---------------------------------SOURCE CODE ENDS-------------------------------
(Review ID: 103917)
======================================================================
###@###.### 10/4/04 16:51 GMT
>java -version
java version "1.1.8"
Occurs as well in the 1.3rc2 and 1.3rc3 releases(see comments)
Run the class defined below by opening the html file below in appletviewer. The
checkboxes numbered 4 and 5 are in a single group. Try clicking twice on any one
of them. The text field on the screen displays the event. You will see that the
second click on the same checkbox in a group returns the ItemEvent value
Deselected, while the checkbox itself remains selected. The second click should
return value Selected only, or, should not return any value since it does not
result in a change of state at all.
---------------------------------HTML to start the applet-----------------------
<html>
<head>
<meta http-equiv="Content-Type"
content="text/html; charset=iso-8859-1">
<meta name="GENERATOR" content="Microsoft FrontPage Express 2.0">
<title>Assignment Six: Checkboxes And Radiobuttons</title>
</head>
<body bgcolor="#FFFFFF">
<p>Here is the output of my program:</p>
<p><applet code="CheckBoxesRadioButtons.class" width="256"
height="128"></applet></p>
</body>
</html>
------------------------------------SOURCE CODE---------------------------------
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class CheckBoxesRadioButtons extends Applet {
private int numobjects;
public void init () {
numobjects = 3; // Number of checkboxes and radiobuttons
to be displayed
setBackground(Color.yellow);
setLayout(new FlowLayout(FlowLayout.CENTER,10,10));
TextField txtfld = new TextField("",20);
add(txtfld);
for (int i=1 ; i<=numobjects ; i++) {
add(new MyButton("Button"+i, txtfld));
add(new MyCheckBox("Checkbox"+i, txtfld));
}
CheckboxGroup chkboxgrp = new CheckboxGroup();
add(new MyCheckBoxInGrp(chkboxgrp, "Checkbox"+(numobjects+1), txtfld));
add(new MyCheckBoxInGrp(chkboxgrp, "Checkbox"+(numobjects+2), txtfld));
setVisible(true);
}
}
class MyButton extends Button {
public MyButton ( String buttontext, final TextField txtfld ) {
super(buttontext);
setSize(15,15);
addActionListener(
new ActionListener() {
public void actionPerformed( ActionEvent e) {
txtfld.setText(getLabel());
}
} // end anonymous class
); // end call to addActionListener
}
}
class MyCheckBox extends Checkbox {
public MyCheckBox ( String checkboxtext, final TextField txtfld ) {
super(checkboxtext, false);
setSize(15,15);
addItemListener(
new ItemListener() {
public void itemStateChanged(ItemEvent e) {
if ( e.getStateChange() == e.SELECTED )
txtfld.setText(getLabel() + " Selected");
else
if ( e.getStateChange() == e.DESELECTED )
txtfld.setText(getLabel() + " Deselected");
}
} // end anonymous class
); // end call to addItemListener
}
}
class MyCheckBoxInGrp extends MyCheckBox {
public MyCheckBoxInGrp ( CheckboxGroup ingrp, String checkboxtext, final
TextField txtfld ) {
super(checkboxtext, txtfld);
setCheckboxGroup(ingrp);
//removeItemListener(getItemListener());
//removeItemListener();
/*
addItemListener(
new ItemListener() {
public void itemStateChanged(ItemEvent e) {
txtfld.setText(getLabel() + " Selected");
}
} // end anonymous class
); // end call to addItemListener
*/
}
}
---------------------------------SOURCE CODE ENDS-------------------------------
(Review ID: 103917)
======================================================================
###@###.### 10/4/04 16:51 GMT
- relates to
-
-
- Resolved
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