package klassid;

import java.io.Serializable;

public class Takisti implements Serializable{
	private static final long serialVersionUID = 1L;
	double r;
    double u;
    public Takisti(double r){this.r=r;}
    public Takisti(String s){
    	if(s.startsWith("{r:")){
    		r=Double.parseDouble(s.substring(3, s.indexOf(",")));
    		u=Double.parseDouble(s.substring(s.indexOf("u:")+2, s.length()-2));
    	}
    }
    void uusPinge(double u){this.u=u;}
    double kysiPinge(){return u;}
    double kysiVool(){return u/r;}
    double kysiVoimsus(){return kysiPinge()*kysiVool();}
    String tekstina(){return "{r:"+r+", u:"+u+"}";}
}