java - Generics with Inheritance -

java - Generics with Inheritance -

the class trainingdata has attribute intent can of of subtypes of class intent. trying utilize java generics enforce generic type t can sub-class of intent. how can that?

public class trainingdata<t> extends info { private t intent; private string id; public trainingdata (usercommand usercommand, t intent) { super(usercommand); this.intent = intent; } public klass getklass() { homecoming intent.getklass(); // <-- works if t extends intent } public intent getintent() { homecoming intent; } public void setintent(intent intent) { this.intent = intent; } @override public string tostring() { homecoming "trainingdata [intent=" + intent + ", id: " + id + "]"; } }

the class trainingdata has attribute intent can of of subtypes of class intent.

try t extends intent means class extends intent accepted.

public class trainingdata<t extends intent> extends info {...}

read more java tutorial bounded type parameters

change getter & setter methods well.

class trainingdata<t extends intent> extends info { private t intent; public t getintent() { homecoming intent; } public void setintent(t intent) { this.intent = intent; } ... }

java generics