card-game/src/Out.java

public class Out {
    static final String[] output = new String[50000];
    static int line = 0;

    public static void println(String string) {
        output[line++] = string;
    }

    public static void println() {
        output[line++] = "";
    }

    public static void toConsole() {
        for (int i = 0; i < line; i++) {
            System.out.println(output[i]);
        }
    }
}