How do I create some variable type alias in Java

Question

let say I have this code

Map list = new HashMap();
list.put(\"number1\", \"one\");
list.put(\"number2\", \"two\")         


        

Answer 1

Although Java doesn't support this, you can use a generics trick to simulate it.

class Test {
     void x(I i, L l) {
        System.out.println(
            i.intValue() + ", " + 
            l.longValue()
        );
    }
}

Source: http://blog.jooq.org/2014/11/03/10-things-you-didnt-know-about-java/