/* package whatever; // don't place package name! */
 
import java.util.*;
import java.util.stream.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		int[] all=new int [] {0,1,2,3,4,5};
		int[] ex=new int [] {2,3,5};
		Set<Integer> exSet = IntStream.of(ex).boxed().collect(Collectors.toCollection(HashSet::new));
		int[] res = IntStream.of(all).filter(val -> !exSet.contains(val)).toArray();
		for (int i : res) {
			System.out.println(i);
		}
	}
}

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