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<blockquote data-quote="KingCM" data-source="post: 17882024" data-attributes="member: 482722">[CODE]import java.awt.*;import java.awt.event.*;import javax.swing.*;&nbsp;public class Compare extends JFrame implements ItemListener {&nbsp; &nbsp; &nbsp; &nbsp; JComboBox combo, lcombo;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; public Compare() {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; setLayout(null);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; String a[] = { &quot;Select&quot;, &quot;Watches&quot;, &quot;Mobiles&quot;, &quot;shoes&quot; };&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; combo = new JComboBox(a);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; combo.setBounds(50, 50, 100, 20);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; combo.addItemListener(this);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; add(combo);&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lcombo = new JComboBox();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lcombo.addItemListener(this);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lcombo.setEnabled(false);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; add(lcombo);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lcombo.setBounds(50, 100, 100, 20);&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; setSize(300, 300);&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; public void itemStateChanged(ItemEvent e) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; String b[] = { &quot;Titan&quot;, &quot;HMT&quot; };&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; String c[] = { &quot;Nokia&quot;, &quot;Sony&quot;, &quot;Motorola&quot;, &quot;Samsung&quot; };&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; String d[] = { &quot;Liberty&quot;, &quot;Action&quot;, &quot;Bata&quot;, &quot;Campus&quot;, &quot;Relaxo&quot; };&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (e.getSource() == combo) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (combo.getSelectedItem().equals(&quot;Select&quot;)) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lcombo.setEnabled(false);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; } else if (combo.getSelectedItem().equals(&quot;Watches&quot;)) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lcombo.setEnabled(true);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lcombo.removeAllItems();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for (int i = 0; i &lt; b.length; i++) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lcombo.addItem(b[i]);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; } else if (combo.getSelectedItem().equals(&quot;Mobiles&quot;)) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lcombo.setEnabled(true);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lcombo.removeAllItems();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for (int i = 0; i &lt; c.length; i++) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lcombo.removeItem(c[i]);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lcombo.addItem(c[i]);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; } else if (combo.getSelectedItem().equals(&quot;shoes&quot;)) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lcombo.setEnabled(true);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lcombo.removeAllItems();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for (int i = 0; i &lt; d.length; i++) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lcombo.addItem(d[i]);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; public static void main(String args[]) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; (new Compare()).setVisible(true);&nbsp; &nbsp; &nbsp; &nbsp; }}[/CODE]or[CODE]import java.awt.*;import java.awt.event.*;import java.util.*;import javax.swing.*;public class ComboBoxTwo extends JFrame implements ActionListener{&nbsp; &nbsp; private JComboBox mainComboBox;&nbsp; &nbsp; private JComboBox subComboBox;&nbsp; &nbsp; private Hashtable subItems = new Hashtable();&nbsp; &nbsp; public ComboBoxTwo()&nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; String[] items = { &quot;Select Item&quot;, &quot;Color&quot;, &quot;Shape&quot;, &quot;Fruit&quot; };&nbsp; &nbsp; &nbsp; &nbsp; mainComboBox = new JComboBox( items );&nbsp; &nbsp; &nbsp; &nbsp; mainComboBox.addActionListener( this );&nbsp; &nbsp; &nbsp; &nbsp; //&nbsp; prevent action events from being fired when the up/down arrow keys are used//&nbsp; &nbsp; &nbsp; mainComboBox.putClientProperty(&quot;JComboBox.isTableCellEditor&quot;, Boolean.TRUE);&nbsp; &nbsp; &nbsp; &nbsp; getContentPane().add( mainComboBox, BorderLayout.WEST );&nbsp; &nbsp; &nbsp; &nbsp; //&nbsp; Create sub combo box with multiple models&nbsp; &nbsp; &nbsp; &nbsp; subComboBox = new JComboBox();&nbsp; &nbsp; &nbsp; &nbsp; subComboBox.setPrototypeDisplayValue(&quot;XXXXXXXXXX&quot;); // JDK1.4&nbsp; &nbsp; &nbsp; &nbsp; getContentPane().add( subComboBox, BorderLayout.EAST );&nbsp; &nbsp; &nbsp; &nbsp; String[] subItems1 = { &quot;Select Color&quot;, &quot;Red&quot;, &quot;Blue&quot;, &quot;Green&quot; };&nbsp; &nbsp; &nbsp; &nbsp; subItems.put(items[1], subItems1);&nbsp; &nbsp; &nbsp; &nbsp; String[] subItems2 = { &quot;Select Shape&quot;, &quot;Circle&quot;, &quot;Square&quot;, &quot;Triangle&quot; };&nbsp; &nbsp; &nbsp; &nbsp; subItems.put(items[2], subItems2);&nbsp; &nbsp; &nbsp; &nbsp; String[] subItems3 = { &quot;Select Fruit&quot;, &quot;Apple&quot;, &quot;Orange&quot;, &quot;Banana&quot; };&nbsp; &nbsp; &nbsp; &nbsp; subItems.put(items[3], subItems3);&nbsp; &nbsp; &nbsp; &nbsp; mainComboBox.setSelectedIndex(1);&nbsp; &nbsp; }&nbsp; &nbsp; public void actionPerformed(ActionEvent e)&nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; String item = (String)mainComboBox.getSelectedItem();&nbsp; &nbsp; &nbsp; &nbsp; Object o = subItems.get( item );&nbsp; &nbsp; &nbsp; &nbsp; if (o == null)&nbsp; &nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; subComboBox.setModel( new DefaultComboBoxModel() );&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; else&nbsp; &nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; subComboBox.setModel( new DefaultComboBoxModel( (String[])o ) );&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; }&nbsp; &nbsp; public static void main(String[] args)&nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; JFrame frame = new ComboBoxTwo();&nbsp; &nbsp; &nbsp; &nbsp; frame.setDefaultCloseOperation( EXIT_ON_CLOSE );&nbsp; &nbsp; &nbsp; &nbsp; frame.pack();&nbsp; &nbsp; &nbsp; &nbsp; frame.setLocationRelativeTo( null );&nbsp; &nbsp; &nbsp; &nbsp; frame.setVisible( true );&nbsp; &nbsp;&nbsp; }}[/CODE]</blockquote>

[QUOTE="KingCM, post: 17882024, member: 482722"] [CODE]import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Compare extends JFrame implements ItemListener { JComboBox combo, lcombo; public Compare() { setLayout(null); String a[] = { "Select", "Watches", "Mobiles", "shoes" }; combo = new JComboBox(a); combo.setBounds(50, 50, 100, 20); combo.addItemListener(this); add(combo); lcombo = new JComboBox(); lcombo.addItemListener(this); lcombo.setEnabled(false); add(lcombo); lcombo.setBounds(50, 100, 100, 20); setSize(300, 300); } public void itemStateChanged(ItemEvent e) { String b[] = { "Titan", "HMT" }; String c[] = { "Nokia", "Sony", "Motorola", "Samsung" }; String d[] = { "Liberty", "Action", "Bata", "Campus", "Relaxo" }; if (e.getSource() == combo) { if (combo.getSelectedItem().equals("Select")) { lcombo.setEnabled(false); } else if (combo.getSelectedItem().equals("Watches")) { lcombo.setEnabled(true); lcombo.removeAllItems(); for (int i = 0; i < b.length; i++) { lcombo.addItem(b[i]); } } else if (combo.getSelectedItem().equals("Mobiles")) { lcombo.setEnabled(true); lcombo.removeAllItems(); for (int i = 0; i < c.length; i++) { lcombo.removeItem(c[i]); lcombo.addItem(c[i]); } } else if (combo.getSelectedItem().equals("shoes")) { lcombo.setEnabled(true); lcombo.removeAllItems(); for (int i = 0; i < d.length; i++) { lcombo.addItem(d[i]); } } } } public static void main(String args[]) { (new Compare()).setVisible(true); } }[/CODE] or [CODE]import java.awt.*; import java.awt.event.*; import java.util.*; import javax.swing.*; public class ComboBoxTwo extends JFrame implements ActionListener { private JComboBox mainComboBox; private JComboBox subComboBox; private Hashtable subItems = new Hashtable(); public ComboBoxTwo() { String[] items = { "Select Item", "Color", "Shape", "Fruit" }; mainComboBox = new JComboBox( items ); mainComboBox.addActionListener( this ); // prevent action events from being fired when the up/down arrow keys are used // mainComboBox.putClientProperty("JComboBox.isTableCellEditor", Boolean.TRUE); getContentPane().add( mainComboBox, BorderLayout.WEST ); // Create sub combo box with multiple models subComboBox = new JComboBox(); subComboBox.setPrototypeDisplayValue("XXXXXXXXXX"); // JDK1.4 getContentPane().add( subComboBox, BorderLayout.EAST ); String[] subItems1 = { "Select Color", "Red", "Blue", "Green" }; subItems.put(items[1], subItems1); String[] subItems2 = { "Select Shape", "Circle", "Square", "Triangle" }; subItems.put(items[2], subItems2); String[] subItems3 = { "Select Fruit", "Apple", "Orange", "Banana" }; subItems.put(items[3], subItems3); mainComboBox.setSelectedIndex(1); } public void actionPerformed(ActionEvent e) { String item = (String)mainComboBox.getSelectedItem(); Object o = subItems.get( item ); if (o == null) { subComboBox.setModel( new DefaultComboBoxModel() ); } else { subComboBox.setModel( new DefaultComboBoxModel( (String[])o ) ); } } public static void main(String[] args) { JFrame frame = new ComboBoxTwo(); frame.setDefaultCloseOperation( EXIT_ON_CLOSE ); frame.pack(); frame.setLocationRelativeTo( null ); frame.setVisible( true ); } }[/CODE] [/QUOTE]

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