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Finally we put all the component information together to produce the result below.


public class SimpleLabel extends org.zkoss.zk.ui.HtmlBasedComponent {
	private String _value = ""; // a data member

	public String getValue() {
		return _value;

	public void setValue(String value) {
		if (!_value.equals(value)) {
			_value = value;
			smartUpdate("value", _value);

	protected void renderProperties(org.zkoss.zk.ui.sys.ContentRenderer renderer)
			throws {
		render(renderer, "value", _value);

Having implemented the Component we now need to implement the Widget.

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