Packet

public class Packet {
    private String msg;
    private int number;
    private double losses;

    public Packet(String msg, int number, double losses) {
        this.setMessage(msg);
        this.setNumber(number);
        this.setLosses(losses);
    }

     void setLosses(double losses) {
        if (losses < 0) {
            this.losses = 0;
        } else if (losses > 1) {
            this.losses = 1;
        } else {
            this.losses = losses;
        }
    }

    private void setNumber(int number) {
        this.number = Math.abs(number);
    }

    private void setMessage(String msg) {
        this.msg = msg;
    }

    public int getNumber() {
        return this.number;
    }

    public double getLosses() {
        return this.losses;
    }
    @Override
    public String toString() {
        if (this.losses < 0.5) {
            return "-----";
        }
        return this.msg;
    }
}