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POJava Panel font changing radio buttons question
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copied!<p>I am having trouble with this assignment because my of my actionlisteners. Right now the panel has 2 checkboxes to change the font into bold and or italic. I want to add 4 radio buttons that can change what font the "saying" is in. Can anyone tell me what I'm doing wrong with my actionlisteners? Thank you!</p> <pre><code>import javax.swing.*; import java.awt.*; import java.awt.event.*; public class StyleOptionsPanel extends JPanel implements ActionListener, ItemListener { private JLabel saying; private JCheckBox bold, italic; // have a button for style1, button for style2, button for style3 private JRadioButton style1, style2, style3, style4; //creates the buttons for each of the 4 styles { bold = new JCheckBox ("Bold", true); italic = new JCheckBox ("Italic", true); style1 = new JRadioButton ("Arial", true); style2 = new JRadioButton ("Times New Roman", false); style3 = new JRadioButton ("Verdana", false); style4 = new JRadioButton ("Thonburi", false); //also check out quote options panel file for example of radio buttons. //after creating your radio buttons, you have to create a button group. copy line exactly from quote options panel //comedy = new JRadioButton ("Comedy", true); - example of assigning radio button //comedy.setBackground (Color.green); ButtonGroup group = new ButtonGroup(); //use this code for the homework group.add (style1); group.add (style2); group.add (style3); group.add (style4); style1.addActionListener (this); style2.addActionListener (this); style3.addActionListener (this); style4.addActionListener (this); add (style1); add (style2); add (style3); add (style4); } //----------------------------------------------------------------- // Sets up a panel with a label and some check boxes that // control the style of the label's font. //----------------------------------------------------------------- public StyleOptionsPanel() { saying = new JLabel ("Say it with style!"); saying.setFont (new Font ("Helvetica", Font.PLAIN, 36)); // we'll need this later bold = new JCheckBox ("Bold"); // what is in quotes doesn't have to match variable being created but it should be descriptive bold.setBackground (Color.green); // you can also set the background color of the checkbox italic = new JCheckBox ("Italic"); italic.setBackground (Color.green); // this doesn't seem to change anything for me? //StyleListener listener = new StyleListener(); //whenever you create a textbox, you have to add a listener for it //bold.addActionListener (listener); //italic.addActionListener (listener); add (saying); //it matters what order these go in, it affects the way that your program looks add (bold); add (italic); add (style1); add (style2); add (style3); add (style4); setBackground (Color.cyan); setPreferredSize (new Dimension(300, 100)); } //***************************************************************** // Represents the listener for both check boxes and the radio boxes. //***************************************************************** private class StyleListener implements ActionListener, ItemListener { //-------------------------------------------------------------- // Updates the style of the label font style. //-------------------------------------------------------------- public void itemStateChanged(ItemEvent e) { int style = Font.PLAIN; if (bold.isSelected()) //this is a boolean statement, on the inside you will always expect some kind of boolean statement style = Font.BOLD; if (italic.isSelected()) style += Font.ITALIC; // style += means that it takes whatever style the font already is and then adds the value Italic to it //public void actionPerformed (ActionEvent event) //also use this code in homework Object source = e.getSource();// TODO Auto-generated method stub } public void actionPerformed(ActionEvent e) // this is our bread and butter, it is basically what we will be changing { if (source == style1) //if (source == style1) saying.setText (Arial); //quote.setText(Helvetica) else (source == style2) saying.setText (TimesNewRoman); else (source == style3) saying.setText (Verdana); else (source == style4) saying.setText(Thonburi); } } @Override public void itemStateChanged(ItemEvent e) { // TODO Auto-generated method stub } @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub } </code></pre> <p>}</p>

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