Java Utililty Methods JComboBox Model

List of utility methods to do JComboBox Model

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Description

The list of methods to do JComboBox Model are organized into topic(s).

Method

voidaddItem(DefaultComboBoxModel model, String elem)
add Item 
model.addElement(elem);
voidaddItems(DefaultComboBoxModel comboBox, Iterable items)
add Items 
for (Object item : items) {
    comboBox.addElement(item);
booleancomboBoxContains(DefaultComboBoxModel model, Object obj)
Checks to see if a JComboBox contains an object. 
for (int i = 0; i < model.getSize(); i++) {
    if (obj.equals(model.getElementAt(i))) {
        return true;
return false;
VectorconvertDefaultComboBoxModelToVector(DefaultComboBoxModel model)
convert Default Combo Box Model To Vector 
Vector v = new Vector();
for (int i = 0; i < model.getSize(); i++) {
    v.add(model.getElementAt(i));
return v;
ComboBoxModelgenerateComboModel(Object[] values)
generate Combo Model 
DefaultComboBoxModel model = new DefaultComboBoxModel(values);
return model;
DefaultComboBoxModelgenerateInsertWhereComboBoxModel(String label)
generate Insert Where Combo Box Model 
Vector<String> values = new Vector<String>();
values.add(label);
values.add(ADD_AT_BEGINING);
values.add(ADD_ABOVE_SELECTION);
values.add(ADD_BELOW_SELECTION);
values.add(ADD_AT_END);
return new DefaultComboBoxModel(values);
ListgetComboModelList(ComboBoxModel model)
Return a List of Objects from a ComboBoxModel 
ArrayList<Object> list = new ArrayList<Object>();
for (int i = 0; i < model.getSize(); i++) {
    list.add(model.getElementAt(i));
return list;
DefaultComboBoxModelgetNewDefaultComboBoxModel(ArrayList itemsToStream)
Creates a new Default Combo Box Model from the ArrayList if items 
DefaultComboBoxModel newModel = new DefaultComboBoxModel();
itemsToStream.stream().forEach((c) -> {
    newModel.addElement(c);
});
return newModel;
ObjectgetSelectedItemfromModel(Object combo)
get Selected Itemfrom Model 
return ((ComboBoxModel) combo).getSelectedItem();
booleanhasDataChanged(List newDatasets, ComboBoxModel currentModel)
Checks whether the data has changed and the model needs updating. 
boolean result;
int i;
Set<String> setDatasets;
Set<String> setModel;
setDatasets = new HashSet<>(newDatasets);
setModel = new HashSet<>();
for (i = 0; i < currentModel.getSize(); i++)
    setModel.add(currentModel.getElementAt(i));
...