Java NullPointerException when doing a test from an arrayList [duplicate]

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• What is a NullPointerException, and how do I fix it? 12 answers

I wanna test the method DrawCard() from the class ModelPlayer that takes the first not-null Color value from the arrayList PoliticCards of the class PoliticCard and puts it in the arrayList politicCards of the class Player; and i get two NullPointerExceptions.

public enum Color {
    BLACK, PURPLE
}
public class PoliticCard {
    private static ArrayList<Color> politicCards;
    public PoliticCard(){
        setPoliticCards(new ArrayList<Color>());
        int i=0;
        while (i<13){//adds 13 Color values set to BLACK
            politicCards.add(Color.BLACK);
            i++;
        }
        while (i<26){//adds 13 Color values set to PURPLE
            politicCards.add(Color.PURPLE);
            i++;
        }
        }
        Collections.shuffle(politicCards);

    }
    public static ArrayList<Color> getPoliticCards() {
        return politicCards;
    }
    public static void setPoliticCards(ArrayList<Color> politicCards) {
        PoliticCard.politicCards = politicCards;
    }


}
public class Player {
    private int id;//id of the player, goes from 1 to 10
    private ArrayList<Color> politicCards;
    public Player(int id){
        this.setId(id);
    }
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public ArrayList<Color> getPoliticCards() {
        return politicCards;
    }
    public void setPoliticCards(ArrayList<Color> politicCards) {
        this.politicCards = politicCards;
    }
public class ModelPlayer {

    public void DrawPoliticCard(Player player){
        int i=0;
        if(PoliticCard.getPoliticCards().get(i)!=null){
                player.getPoliticCards().add(PoliticCard.getPoliticCards().get(i));//This
// is the line where i get the first NullPointerException
            PoliticCard.getPoliticCards().remove(i);
        }else{
            i++;
            player.getPoliticCards().add(PoliticCard.getPoliticCards().get(i));
            PoliticCard.getPoliticCards().remove(i);
        }

        }



}
public class ModelPlayerTest {

    @Test
    public void testDrawCard() {
        Player player = new Player(1);
        ModelPlayer modelPlayer = new ModelPlayer();
        player.setPoliticCards(null);
        new PoliticCard();
        modelPlayer.DrawPoliticCard(player);//This is the second line where i get NullPointerException
        assertNotNull(player.getPoliticCards().get(0));
    }

}