How to cast a string to an URL in java? -

my java code below.i wrote url=url(s); not true.i want make casting operation convert string taken user ,to url.how can operation?is there method this?

    public static void main(string[] args) {     system.out.println("welcome download manager");     url url;     string s;     scanner scan= new scanner(system.in);     s=scan.nextline();     url=url(s);     download download=new download(url); } 

you can't cast string url, since string not subclass of url. can create new instance of url, passing string argument constructor. in java, always invoke constructor using keyword new:

url url = new url(string);