targil car car

public class Car {
    private String carid;
    private int speedcar, userup;

    public String getCarid() {
        return carid;
    }

    public void setCarid(String carid) {
        this.carid = carid;
    }

    public int getSpeedcar() {
        return speedcar;
    }

    public int getUserup() {
        return userup;
    }

    public void setUserup(int userup) {
        this.userup = userup;
    }

    public String show() {
        String ss = "the speed car is: " + (speedcar = 60);
        return ss;
    }

    public String speedup() {
        String up = "the speed car now is: " + (speedcar + userup);
        return up;
    }

    public String speeddown() {
        String d = "the speed car after slow is: " + (speedcar - 2);
        return d;
    }

    public String stop() {
        String s = "the car is stop and now the speed is: " + (speedcar = 0);
        return s;
    }
    public String ka(){
        String ci= "the number of car is: "+(carid)+"\n";
        return ci;
    }
}