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PONeed flexible Java key/value collection class for JComboBox
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  1. PONeed flexible Java key/value collection class for JComboBox
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    copied!<p>I have a model class that stores keys and values:</p> <pre><code>public class KeyValue { private Object key; private String value; KeyValue () { } KeyValue (Object key, String value) { this.key=key; this.value=value; } public Object getKey() { return this.key; } public void setKey(Object key) { this.key=key; } public String getValue() { return this.value; } public void setValue(String value) { this.value=value; } @Override public String toString() { return this.value; } } </code></pre> <p>I use this class to populate a <code>JComboBox</code>'s Model:</p> <pre><code>for (int i = 0; i &lt; universes.length; i++) { ComboBox_Universes.addItem(new KeyValue(infoObject.ID,infoObject.title)); } </code></pre> <p>I would like to refactor this logic to use a Java collection class (call it <code>KeyValueCollection</code>) that can support two objectives:</p> <p>1) the <code>KeyValueCollection</code> can be used to populate the <code>JComboBox</code>'s Model. Something like:</p> <pre><code>//get a KeyValueCollection filled with data from helper class KeyValueCollection universeCollection = Repository.getUniverseCollection(); //use this collection as the JComboBox's model ComboBox_Universes.setModel(universeCollection); </code></pre> <p>2) I can use the <code>KeyValueCollection</code> to convert a key to a value:</p> <pre><code>//ID retrieve from another control int universeID = (int)this.Table_Values.getModel().getValueAt(row, COLUMN_ID); //convert ID to name String universeName = universeCollection.get(universeID).getValue(); </code></pre> <p>In the .NET world, I would use the KeyedCollection class for this, but I'm not very familiar with Java.</p> <p>Help is greatly appreciated.</p>
 

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