I am using J2EE with WASLiberty & Apache Wink (REST Impl). I would need in some cases to have api class to be singleton, however private constructor probably wont work with REST. Has anyone used api to be singleton ? any hints ?
JavaEE REST (Wink) - Can be REST Api class defines as singleton?
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As per Wink doc
Since the instantiation of your resource class (in your words, API class) will be carried out by injection, I don't think the default ctor visibility will be an issue (In the worst case, make it public)