How to compare two properties of a class

There is a class Movie which has two properties, id and type.

static class Movie implements Comparable<Movie> {
    Integer id;
    Type type;

    Movie(Integer id, Type type) {
        this.id = id;
        this.type = type;
    }

    @Override
    public int compareTo(final Movie other) {
        return 0;
    }

    public Integer getId() {
        return id;
    }

    public Type getType() {
        return type;
    }
}

enum Type {
    TYPE_A,
    TYPE_B
}

Let's say that this is the input:

// MOVIE_ID  MOVIE_TYPE
// 1         TYPE_A
// 2         TYPE_B
// 3         TYPE_A
// 4         TYPE_B

and the output I want to achieve is this:

// MOVIE_ID  MOVIE_TYPE
// 1         TYPE_A
// 3         TYPE_A
// 2         TYPE_B
// 4         TYPE_B

Also I want to be sure that null is greater. Are there any libraries or do I need to implement it by my own, if so, what's the best way to achieve that?

So you want to compare by type first, and then by ID? In that case, you need some compareTo logic like this:

if (type != other.type) {
    return type.compareTo(other.type);
} else {
    return id.compareTo(other.id);
}

To account for null, you could add more ifs.