Java spread operator

Question

I am not sure of the vocabulary I am using here, please correct me if I\'m wrong.

In Javascript, I had the following code:

let args = [1,2,3];

func         


        

Answer 1

If you need to call only few methods this way, you can do without Reflection simply by creating a wrapper class like this:

Main class (SpreadTest.java):

public class SpreadTest {
     public static void main(String []args){
        int[] a = {1, 2, 3};
        System.out.println(new FooWrapper().doSomething(a)); // 6
     } 
}

Your wrapper class (FooWrapper.java):

public class FooWrapper extends Foo {
    public int doSomething(int ...a) {
        return super.doSomething(a[0], a[1], a[2]);
    }
}

The class with the method which does the work (Foo.java):

public class Foo {
    public int doSomething(int a, int b, int c) {
        return a + b + c;
    }
}