public void start5_A1(){
        joe.setPenColor(Color.red);
        boolean richtung = true;
        for(int i=0; i<30; i++){
            if(richtung == true){
                joe.forward(10);
                joe.right(90);
                richtung = false;

                if(i > 15){
                    joe.setPenColor(Color.green);
                }
            } else {
                joe.forward(10);
                joe.left(90);
                richtung = true;
            }
        }
        joe.setPenColor(Color.blue);
    }

    public void start6_A2(){
        resetJoe();

        int i = 0;
        while(i<6){
            joe.forward(100);
            joe.right(120);
            joe.forward(100);
            joe.right(120);
            joe.forward(100);
            joe.right(60);
            i++;
        }

        joe.penUp();

        for(int a=0;a<6;a++){
            if(a%2==0){
                joe.setFillColor(Color.red);
            } else if (a%2==1){
                joe.setFillColor(Color.green);
            }
            joe.right(30);
            joe.forward(50);
            joe.fill();
            joe.right(180);
            joe.forward(50);
            joe.right(90);
        }

    }

    public void start7_A3(){
        Color red = new Color(255,105,180);
        Color green = new Color(0,255,0);
        joe.hideTurtle();

        for(int i=0;i<500;i=i){

            int zufall = (int)(Math.random()*50);

            if (zufall > 40){
                joe.setPenColor(Color.red);
            } else{
                joe.setPenColor(Color.green);

            }
            joe.forward(zufall);
            int i_f = (int)(Math.random()*10);

            if(i_f < 5){
                joe.left(90);
            }else{
                joe.right(90);
            }

            i++;
        }

        joe.showTurtle();
    }

    public void start8_A4(){
        Color red = new Color(255,105,180);
        Color green = new Color(0,255,0);
        joe.hideTurtle();
        int distance= 0;
        joe.distance(0,0);
        for(int i=0;i<500;i=i){

            int zufall = (int)(Math.random()*50);
            System.out.println(joe.distance(0,0));
            if (joe.distance(0,0) > 40){
                joe.setPenColor(Color.red);
            }else if (joe.distance(0,0)< 40){

                joe.setPenColor(Color.green);
            }else{
                joe.setPenColor(Color.red);

            }
            joe.forward(zufall);
            int i_f = (int)(Math.random()*10);

            if(i_f < 5){
                joe.left(90);

            }else{
                joe.right(90);

            }

            i++;
        }

        joe.showTurtle();
    }