What is the need of Void class in Java [duplicate]

It also contains Void.TYPE, useful for testing return type with reflection:

public void foo() {}
...
if (getClass().getMethod("foo").getReturnType() == Void.TYPE) ...

Say you want to have a generic that returns void for something:

abstract class Foo<T>
{
    abstract T bar();
}

class Bar
    extends Foo<Void>
{
    Void bar()
    {
        return (null);
    }
}

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