Forcing type parameter to implement specific method in java generics -

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is there way force type parameter in java generics implement equals method? example, wrote class: public class bag<item> implements iterable<item> has contains method, uses item.equals method. want make sure passed object in generics implement equals method.

you make abstract base class called itembase, make equals abstract , have item extend itembase. 

public abstract class itembase {    @override   public abstract boolean equals(object o); }  public class bag extends itembase

this force implementing itembase implement equals


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