public interface SortElements {

    public static final int MAIOR = 1;
    public static final int MENOR = -1;
    public static final int IGUAL = 0;
    public void sortItems(Integer[] elementos);

}

package cc.engeld;

public interface SortElements {

    public static final int MAIOR = 1;
    public static final int MENOR = -1;
    public static final int IGUAL = 0;
    public void sortItems(Integer[] elementos);

}

Update SortElements.java