var-args

[swaraj gupta]

public class Fruits {

	public static void main(String[] args) 
	{
		int [] mango = {1,2,3};
		int banana[] = {4,5,6};
		new Fruits().go(mango,banana);
	}
	void go(int[]... z) 
	{
		for(int[] a : z)
		System.out.print(a[0]);
	}
}

Output: 14
Why so..?
How would you read this "int[]..a" ?
Well var-arg is one of my weakest point, I faced same sort of problems when I was going through advanced overloading. How should I fix it..? Please suggest something..

[Paul Clapham]

You pass two parameters to the go() method. What are they? And then the go() method prints... what?

[swaraj gupta]

Paul Clapham wrote:You pass two parameters to the go() method. What are they? And then the go() method prints... what?

Just know one thing here that we are passing references of one-dimensional int type array objects to go method.

[Prasad Kharkar]

Swaraj
even var-args was obstacle in my preparation
but it is simple
look you have to just remember some rules

with var-args as method arguments, we can pass either array or various arguments to the method

public class Fruits {

	public static void main(String[] args) 
	{
		int [] mango = {1,2,3};
		int banana[] = {4,5,6};
		new Fruits().go(mango,banana);//we are passing two entire array arguments as variables arguments 
                           // that means both the arrays will be available for us in the method body
	}
	void go(int[]... z) //now, variable arguments passed can be internally considered in the form of array
	{
		for(int[] a : z) // here suppose z is a var-arg that stores two arrays(just like 2 dimensional array) and as said above, var-args can be accessed using array index
                          // Now this means that, variable a is referring the the first element in the z variables that element is the first array i.e. mango
		          // now in the first iteration, a refers to mango array and a[0] refers to 1 so gets printed and similar thing for the next iteration 
                System.out.print(a[0]); 
	}
}

so the answer is 14

hope this helps