Only print every other enum value in for loop

I'm trying to make it so only every other colour is being printed off in my for loop statement but because of the type difference I'm unable to incorporate it in an if statement.

public enum Example{Red, Blue, Green, Yellow, Orange, Purple, Brown}

public class Test {
    public static void main(String[] args) {
        for (Example colour: Example.values()) {
            if (????) {
                System.out.println(colour);
            }
        }
    }
}

Desired output:

Red Green Orange Brown

You could use the ordinal() like

for (Example colour : Example.values()) {
	if (colour.ordinal() % 2 == 0) {
		System.out.println(colour);
	}
}

Or, you could use an external variable to hold a count. Something like,

int i = 0;
for (Example colour : Example.values()) {
	if (i % 2 == 0) {
		System.out.println(colour);
	}
	i++;
}

But this seems like a good place for a traditional for loop that increments by 2. Like,

for (int i = 0; i < Example.values().length; i += 2) {
	System.out.println(Example.values()[i]);
}

All three produce your requested output.

You could use a for loop to iterate over every other color:

for (int i =0; i< Example.values().length;i+=2){
    System.out.println(Example.values()[i]);
}

You can access Example.values() and print the alternate elements by checking if the index is divisible by 2 (i.e. index % 2 == 0).

Demo using the Stream API:

import java.util.stream.IntStream;

enum Example {
	Red, Blue, Green, Yellow, Orange, Purple, Brown
}

public class Main {
	public static void main(String[] args) {
		IntStream.range(0, Example.values().length)
			.filter(i -> i % 2 == 0)
			.forEach(i -> System.out.println(Example.values()[i]));
	}
}

Output:

Red
Green
Orange
Brown

<kbd>ONLINE DEMO</kbd>

You can use the traditional loops instead of using an IntStream.

Another way using a loop:

boolean toggle = false;
for (Example value : Example.values()) {
  if (toggle ^= true) System.out.println(value);
}