compiler error converting java.util.list to java.util.list?

Question

i am feeling so noob right now asking this question, but i cannot figure it out what it's going on

import java.util.List;
public class ListResponse<T> {

    private List<T> items;
    private Paging paging;

    public <T> ListResponse(List<T> items, Paging paging) {
        this.items = **items**;
        this.paging = paging;
    }

}

I am getting a compiler error on that items parameter that i marked. The error is:

Type mismatch: cannot convert from java.util.List<T> to java.util.List<T>

Do you have any idea what is happening ? Thanks!

ListResponse is not a void method, shouldn't it have return value? — Apurva
– Apurva, Commented Mar 17, 2015 at 15:42

Konstantin Yovkov · Accepted Answer · 2015-03-17 15:40:46Z

4

The <T> that is defined as constructor-scope, hides the class-scoped <T> and the compiler treats these as different types. That's why you get a compile-time error.

Just get rid of the constructor's type parameter:

public ListResponse(List<T> items, Paging paging) {
    this.items = items;
    this.paging = paging;
}

answered Mar 17, 2015 at 15:40

Konstantin Yovkov

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