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    <p>You can use a <code>ListCellRenderer</code>. You need to write custom class for this. Here is the full code to set foreground based on index (to avoid duplicates). You can also set custom selection background and background for this. See the comments in the code.</p> <pre><code>import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.util.*; class ListCellRendererDemo2 extends JFrame { Hashtable&lt;Integer,Color&gt; table; JComboBox&lt;String&gt; c; public ListCellRendererDemo2() { createAndShowGUI(); } private void createAndShowGUI() { setTitle("JComboBox Demo"); setLayout(new FlowLayout()); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); table=new Hashtable&lt;Integer,Color&gt;(); table.put(1,Color.RED); table.put(2,Color.BLUE); table.put(3,Color.GREEN); table.put(4,Color.GRAY); c=new JComboBox&lt;String&gt;(); c.addItem("Item 1"); c.addItem("Item 2"); c.addItem("Item 3"); c.addItem("Item 4"); c.addItem("Item 5"); c.addItem("Item 6"); c.addItem("Item 7"); c.addItem("Item 8"); c.setRenderer(new MyListCellRenderer(table)); add(c); setSize(400,400); setVisible(true); } public static void main(String args[]) { SwingUtilities.invokeLater(new Runnable(){ public void run() { new ListCellRendererDemo2(); } }); } } class MyListCellRenderer extends DefaultListCellRenderer { Hashtable&lt;Integer,Color&gt; table; public MyListCellRenderer(Hashtable&lt;Integer,Color&gt; table) { this.table=table; // Set opaque for the background to be visible setOpaque(true); } public Component getListCellRendererComponent(JList jc,Object val,int idx,boolean isSelected,boolean cellHasFocus) { // Set text (mandatory) setText(val.toString()); // Set the foreground according to the selected index setForeground(table.get(idx)); // Set your custom selection background, background // Or you can get them as parameters as you got the table if(isSelected) setBackground(Color.LIGHT_GRAY); else setBackground(Color.WHITE); return this; } } </code></pre>
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    1. POHow to make unique font color for lines in a JCombobox?
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    1. USJavaTechnical
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    1. COplease isn't there any older thread, why to reincarnating any zombie, +1 for Initial Thread :-)
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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