primefaces selectOneMenu doesn't working when it should

Question

I'm losing days with this strange problem, I double checked everything but my selectOneMenu simply doesn't works and I can't understand why. So here are my codes: My jsf ``` ``` My converter: ``` @FacesConverter("entityTypeConverter") public class EntityTypeConverter implements Converter { public Object getAsObject(FacesContext context, UIComponent component, String value) { if (value == null || value.length() == 0) { return null; } Long id = Long.parseLong(value); return EntityType.findEntityType(id); } public String getAsString(FacesContext context, UIComponent component, Object value) { return value instanceof EntityType ? ((EntityType) value).getId().toString() : ""; } } ``` I…

Accepted Answer

That can happen if the `equals()` method of your `EntityType` class is missing or broken. Given the fact that you've an `id` property in your `EntityType` class which seems to identify the instance uniquely enough, the following minimal implementation should do it for you:

```
@Override
public boolean equals(Object other) {
    return (other instanceof EntityType) && (id != null)
        ? id.equals(((EntityType) other).id)
        : (other == this);
}

@Override
public int hashCode() {
    return (id != null)
        ? (this.getClass().hashCode() + id.hashCode())
        : super.hashCode();
}
```

`hashCode()` is just mandatory as per `equals()` contract.

primefaces selectOneMenu doesn't working when it should

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