Java Utililty Methods JComboBox Value

List of utility methods to do JComboBox Value

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Description

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

Method

booleancontainsValue(JComboBox comboBox, String value)
contains Value 
ComboBoxModel model = comboBox.getModel();
int size = model.getSize();
for (int i = 0; i < size; i++) {
    Object element = model.getElementAt(i);
    if (element.equals(value)) {
        return true;
return false;
JComboBoxcreateComboBox(ActionListener actionListener, Vector values, String command)
create Combo Box 
JComboBox combo = new JComboBox(values);
combo.setActionCommand(command);
if (actionListener != null) {
    combo.addActionListener(actionListener);
return combo;
JComboBoxcreateComboBox(final Preferences node, final String pref_name, final String[] options, final String default_value)
create Combo Box 
final String[] interned_options = new String[options.length];
for (int i = 0; i < options.length; ++i) {
    interned_options[i] = options[i].intern();
default_value.intern();
final JComboBox combo_box = new JComboBox(interned_options);
final String current_stored_value = node.get(pref_name, default_value).intern();
combo_box.addActionListener(new ActionListener() {
...
JComboBoxcreateStandardCombo(String[] values)
create Standard Combo 
JComboBox combo = new JComboBox(values);
FontMetrics fm = combo.getFontMetrics(combo.getFont());
combo.setPreferredSize(new Dimension(150, fm.getHeight()));
combo.setMinimumSize(new Dimension(75, fm.getHeight()));
return combo;
voidfillValue(Vector vtData, int iComboIndex, int iVectorIndex, JComboBox cbo, Vector vt, boolean bClear, boolean bHaveNull)
fill Value 
if (bClear) {
    vt.clear();
    cbo.removeAllItems();
if (bHaveNull) {
    vt.addElement("");
    cbo.addItem("");
for (int iRowIndex = 0; iRowIndex < vtData.size(); iRowIndex++) {
    Vector vtResultRow = (Vector) vtData.elementAt(iRowIndex);
    vt.addElement(vtResultRow.elementAt(iVectorIndex));
    cbo.addItem(vtResultRow.elementAt(iComboIndex));
ObjectgetCmbValue(JComboBox cmb)
get Cmb Value 
Object item = cmb.getSelectedItem();
if (item instanceof String) {
    return null;
} else {
    return item;
doublegetDouble(javax.swing.JComboBox input)
Get double from the JComboBox input 
return new Double((String) (input.getSelectedItem())).doubleValue();
ObjectgetIfHasValue(Object val, JComboBox cb)
get If Has Value 
if (val == null) {
    return null;
String vals = val.toString();
for (int i = 0; i < cb.getModel().getSize(); i++) {
    if (cb.getModel().getElementAt(i).toString().equals(vals)) {
        return val;
return null;
intgetInt(JComboBox combo)
get Int 
int rv = 0;
Object o = combo.getSelectedItem();
if (o != null) {
    if (o instanceof Number) {
        rv = ((Number) o).intValue();
    } else {
        String s = o.toString();
        if (s != null) {
...
booleanIsComboBoxModified(JComboBox comboBox, Object originalValue)
Is Combo Box Modified 
return (comboBox.getSelectedItem() != null ? !comboBox.getSelectedItem().equals(originalValue)
        : originalValue != null);