Default selection in JSF for with

When using the <h:selectOneMenu> component in JSF with <f:selectItem>, it's possible to set a default item to be selected when the page loads. This can be achieved by setting the value attribute of the <h:selectOneMenu> component to the default value.

For example, if we have the following <h:selectOneMenu> component:

<h:selectOneMenu value="#{bean.selectedItem}">
    <f:selectItem itemValue="1" itemLabel="Option 1" />
    <f:selectItem itemValue="2" itemLabel="Option 2" />
    <f:selectItem itemValue="3" itemLabel="Option 3" />
</h:selectOneMenu>

We can set the default selected value to be "Option 2" by setting the value attribute to "2" in the backing bean:

public class Bean {
    private String selectedItem = "2";
    // getters and setters
}

In this case, when the page loads, "Option 2" will be pre-selected in the dropdown menu.

It's important to note that the value specified in the value attribute must match one of the itemValue attributes of the <f:selectItem> components. Otherwise, the default selection will not be set.

In summary, setting the value attribute of the <h:selectOneMenu> component to the default value in the backing bean will allow for a default selection when using <f:selectItem> in JSF.

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