GUI Components: Part 2 - Java: How to Program Early Objects - page 920

78 JMenu formatMenu = new JMenu( "Format" ); // create format menu

formatMenu.setMnemonic( 'r' ); // set mnemonic to r 79

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// array listing string colors

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String[] colors = { "Black" , "Blue" , "Red" , "Green" };

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JMenu colorMenu = new JMenu( "Color" ); // create color menu
colorMenu.setMnemonic( 'C' ); // set mnemonic to C

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// create radio button menu items for colors

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colorItems = new JRadioButtonMenuItem[colors.length];
colorButtonGroup = new ButtonGroup(); // manages colors

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ItemHandler itemHandler = new ItemHandler(); // handler for colors

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92 // create color radio button menu items
93 for ( int count = 0 ; count < colors.length; count++)
94 {
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99 colorItems[count].addActionListener(itemHandler);
100 }
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107 // array listing font names
108 String[] fontNames = { "Serif" , "Monospaced" , "SansSerif" };
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112 // create radio button menu items for font names
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116 // create Font radio button menu items
117 for ( int count = 0 ; count < fonts.length; count++)
118 {
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122 fonts[count].addActionListener(itemHandler); // add handler
123 }
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128 String[] styleNames = { "Bold" , "Italic" }; // names of styles
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130 StyleHandler styleHandler = new StyleHandler(); // style handler
Fig. 22.5 | JMenus and mnemonics. (Part 3 of 5.)

colorItems[count] =
new JRadioButtonMenuItem(colors[count]); // create item
colorMenu.add(colorItems[count]); // add item to color menu
colorButtonGroup.add(colorItems[count]); // add to group

colorItems[0].setSelected( true ); // select first Color item

formatMenu.add(colorMenu); // add color menu to format menu
formatMenu.addSeparator(); // add separator in menu

JMenu fontMenu = new JMenu( "Font") ; // create font menu
fontMenu.setMnemonic( 'n' ); // set mnemonic to n

fonts = new JRadioButtonMenuItem[fontNames.length];
fontButtonGroup = new ButtonGroup(); // manages font names

fonts[count] = new JRadioButtonMenuItem(fontNames[count]);
fontMenu.add(fonts[count]); // add font to font menu
fontButtonGroup.add(fonts[count]); // add to button group

fonts[ 0 ].setSelected( true ); // select first Font menu item
fontMenu.addSeparator(); // add separator bar to font menu

styleItems = new JCheckBoxMenuItem[styleNames.length];