RichFaces <a4j:commandButton>The <a4j:commandButton> component is similar to the JavaServer Faces ( JSF) <h:commandButton> component, but additionally includes Ajax support. It requires only one value attribute to be used. We can use it to set text for the command button. By default, the <a4j:commandButton> uses the click event instead of the submit event. Note - The <a4j:commandButton> component has the execute="@form" setting by default. To limit rendering to a different scope, redefine the execute attribute.ExampleHere, in the following example, we are implementing <a4j:commandButton> component. This example contains the following files. JSF File// commandButton.xhtml Managed Bean// User.java Output:
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