Enter your code herepackage com.company;
import java.util.Arrays;
import java.util.Scanner;
/**
 * Created by Alex on 26.02.2015.
 */
public class Massive {

    public static boolean Check (double a){
        if (a>3 && a-(int)a ==0)
            return true;
        else return false;
    }
    public static boolean CheckEven (double a){
        if ( a%2==0)
            return true;
        else return false;
    }

    public static void main(String[] args) {
        int a=0;
        for (int i=0;i<1;) {


            Scanner sc = new Scanner(System.in);

            System.out.println("введите чётное положительное число больше 3х: ");
            a = sc.nextInt();
            if (Check(a)==true)
                i++;
        }
        int b=(int)a;
        int m[] = new int[b];
       int coutEven=0;
        for (int i = 0; i < m.length; i++) {
            m[i] = ((int) (Math.random() * (b+1)));
if (CheckEven(m[i]))
    coutEven++;
        }
       int mEven[]= new int[coutEven];
       int j=0;
        for (int i = 0; i < m.length; i++) {
            System.out.print(m[i] + " ");
            if (CheckEven(m[i])){
                mEven[j]=m[i];
            j++;}
        }
        System.out.println();
        for (int i = 0; i < mEven.length; i++) {
            System.out.print(mEven[i] + " ");

        }
    }

}