Java Utililty Methods JComboBox Item

List of utility methods to do JComboBox Item

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Description

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

Method

Listitems(JComboBox comboBox)
items 
ArrayList items = new ArrayList();
for (int i = 0; i < comboBox.getItemCount(); i++) {
    items.add(comboBox.getItemAt(i));
return items;
voidloadCombo(JComboBox cmb, List data)
load Combo 
cmb.addItem(" ");
if (data != null) {
    Iterator it = data.iterator();
    while (it.hasNext()) {
        cmb.addItem(it.next());
voidloadInstances(JComboBox target, Class source, Class limit, Object defaultItem)
load Instances 
Class<?>[] clss = source.getClasses();
for (Class<?> cls : clss) {
    try {
        if (!limit.isAssignableFrom(cls)) {
            continue;
        if (cls.isInterface()) {
            continue;
...
voidloadStaticItems(JComboBox target, Class source, Class limit, String defaultItem)
load Static Items 
Field[] fields = source.getFields();
for (Field f : fields) {
    try {
        if (!java.lang.reflect.Modifier.isStatic(f.getModifiers())) {
            continue;
        Object v = f.get(null);
        if (v == null) {
...
JComboBoxmakeComboBox(Object[] items)
Creates a combo box that remains one line in height. 
return new JComboBox(items) {
    public Dimension getMaximumSize() {
        Dimension pref = getPreferredSize();
        Dimension max = super.getMaximumSize();
        return new Dimension(max.width, pref.height);
};
voidreplaceComboContents(JComboBox cb, String[] items)
replace Combo Contents 
ActionListener[] listeners = cb.getActionListeners();
for (int i = 0; i < listeners.length; i++)
    cb.removeActionListener(listeners[i]);
if (cb.getItemCount() > 0)
    cb.removeAllItems();
for (int i = 0; i < items.length; i++) {
    cb.addItem(items[i]);
for (int i = 0; i < listeners.length; i++)
    cb.addActionListener(listeners[i]);
voidreplaceComboItems(JComboBox combo, Vector items)
Replace all items in a JComboBox (What am I missing in the published API?) 
combo.removeAllItems();
Iterator scit = items.iterator();
while (scit.hasNext()) {
    combo.addItem(scit.next());
return;
voidselJComboBoxItem(Properties properties, JComboBox combo, Vector namVec, String name)
Sets the selection of the JComboBox to the Object 'name' from the list in namVec. 
int idx = namVec.indexOf(name);
combo.setSelectedIndex(idx);
combo.updateUI();
voidselJComboBoxItem(Properties properties, JComboBox combo, Vector namVec, String name)
Sets the selection of the JComboBox to the Object 'name' from the list in namVec. 
int idx = namVec.indexOf(name);
combo.setSelectedIndex(idx);
combo.updateUI();
voidsetListData(JComboBox box, Object[] items)
Procedure to set the list of items in a ComboBox 
box.removeAllItems();
if (items != null) {
    for (int i = 0; i < items.length; i++) {
        box.addItem(items[i]);