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POPopulating JList from Hashmap and retriving key
 

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    <p>How can I populate JList from a HashMap but to have only the value displayed in the list?</p> <p>I am populating the list with following code. When I start the application I get list items like {1=Value1}, {2=Value2} etc. I want to display just the value. </p> <p>I am using the HashMap because I need later when I submit the form where JList is to use the keys from values selected for my Insert method and I understood from other examples here that this is done with hashsmap.</p> <pre><code>public void populateListwithCategories(final JList list) { try { DefaultListModel listModel = new DefaultListModel(); List&lt;AdvertisementCategory&gt; advertisementCategories = advertisementCategoryProvider.getAdvertisementCategories(); for (AdvertisementCategory advertisementCategory : advertisementCategories) { int id = advertisementCategory.getId(); String name = advertisementCategory.getName(); advertisementCategory.advertisementMap.put(id, name); listModel.addElement(advertisementCategory.advertisementMap); } list.setModel(listModel); } catch (MalformedURLException ex) { Logger.getLogger(AdvertisementCategoryController.class.getName()).log(Level.SEVERE, null, ex); } catch (IOException ex) { Logger.getLogger(AdvertisementCategoryController.class.getName()).log(Level.SEVERE, null, ex); } } </code></pre> <p>This is My AdvertisementCategory model from where I want to export the data to hashmap.</p> <pre><code>public class AdvertisementCategory { private int id; private String name, description; public List&lt;AdvertisementCategory&gt; advertisementCategories; public Map&lt;Object, String&gt; advertisementMap = new HashMap&lt;&gt;(); public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getDescription() { return description; } public void setDescription(String description) { this.description = description; } public AdvertisementCategory(int id, String name, String description) { this.id = id; this.name = name; this.description = description; } public AdvertisementCategory(String name, String description) { this.name = name; this.description = description; } public AdvertisementCategory() { } public AdvertisementCategory(int id, String name) { this.id = id; this.name = name; } </code></pre> <p>}</p>
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    1. USVladimir Jelovac
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