Java generics type variable as array type

Question

While learning Java Generics, I found this statement in Java Docs :

A type variable can be any non-primitive type you specify: any class type, any interface type, any array type, or even another type variable.

By array type did they mean primitive array or ArrayList ? If they mean primitive array , how should we code it ?

Any type of array can be used as a generic type parameter, e.g., List<byte[]> or Collection<String[]>. — shmosel
– shmosel, Commented Mar 20, 2017 at 6:36

ikh · Accepted Answer · 2017-03-20 06:37:11Z

1

Like this:

public class Test {
    static void main(String[] asdf) {
        Asdf<int[]> obj = new Asdf<int[]>();
        obj.foo();
    }
}
class Asdf<T> {
    public void foo() { }
}

answered Mar 20, 2017 at 6:37

ikh

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Comments

fabfas · Accepted Answer · 2017-03-20 06:46:21Z

0

Java has a class for every array type, so there's a class for int[], there's a class for Test[]. These classes are created by JVM.

You can access them as

int[].class
Test[].class.

answered Mar 20, 2017 at 6:46

fabfas

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