Cylinder c2=new Cylinder(9,4);以上语句报错，怎么修正呢，是哪里出错了(语言-java)

public class Circle
double radius;
public Circle(int r) radius=r;} public double getArea()
return Math.PIradiusradius;
public double getPre()
return Math.PIradius2;
public class Cylinder
Circle c;
int h;
Cylinder(int h1,int r1)h=h1; c=new Circle(r1);
public double getArea() return c.getArea()*2+c.getArea()*h;
public double getVol() return c.getArea()*h;

   `
    public static void main(String[]args) `
        Circle c1=new Circle(4);
        c1.getArea();
        c1.getPre();
        Cylinder c2=new Cylinder(9,4);
        c2.getArea();
        c2.getVol(); 
        System.out.println("圆的面积="+c1.getArea());
        System.out.println("圆的周长="+c1.getPre());
        System.out.println("圆柱表面积="+c2.getArea());
        System.out.println("圆柱体积="+c2.getVol());
`

`

你贴出来的这代码格式完全是错的 。