Stand Alone Class - Changing Values

I need to change a value in mustang, and I have a couple of questions. Mustang is set to the default constructor, and I need to change all of the values. (color, model, horsePower, and doors) Can I consolidate the four change(variable)'s into one statement? Like this:

public void changeAll(int h, String c, String m, int d) {
        horsePower = h;
        color = c;
        model = m;
        doors = d;
    }

Mustang declare:

         autoB mustang = new autoB();

Stand Alone Class:

package auto;

public class autoB {

    private int horsePower;
    private int doors;
    private String model;
    private String color;

    public autoB() {
        horsePower = 250;
        color = "red";
        model = "charger";
        doors = 4;
    }

    public autoB(int h, String c, String m, int d) {
        horsePower = h;
        color = c;
        model = m;
        doors = d;
    }

    public int getHorse() {
        return horsePower;
    }

    public int getDoors() {
        return doors;
    }

    public String getColor() {
        return color;
    }

    public String getModel() {
        return model;
    }

    public void changeHorse(int h) {
        horsePower = h;
    }

    public int changeDoors(int d) {
        doors = d;
        return doors;
    }

    public String changeColor(String c) {
        color = c;
        return color;
    }

    public String changeModel(String m) {
        model = m;
        return model;
    }

    public String toString() {
        return "Horse Power: " + horsePower + " Color: " + color + " Model: " + model + " Doors: " + doors;
    }

    public boolean equals(Object obj) {
        autoB a = (autoB) obj;
        if (model.equalsIgnoreCase(a.getModel())) {
            return true;
        } else {
            return false;
        }
    }
}

How I would I change a value using change(variable) in the main driver, I tried looking everywhere.