java - non-static method cannot be referenced from a static context while passing between classes -

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this question has answer here:

i know asked many times can't grasp of it. have method:

public static void tofile() throws filenotfoundexception{     printwriter ofile = new printwriter("output.csv");     ofile.println("tipas,vadovas,pavadinimas,produktas(mb),darbuotojai(uab)");     company com = companylist.get(companylist.size()-1);     company.csv(com, ofile);     ofile.close(); }

on line company.csv(com, ofile); error non-static method cannot referenced static context

csv method looks this

public void csv(company com,printwriter ofile){        ofile.print("kita");        ofile.println(b+","+n+","+","+"-"+","+"-");     }

as understood should have instance variables when passing think can't (am right?)

*note: company class have 2 child classes csv method. don't know if helps.

i think want change this:

company com = companylist.get(companylist.size()-1); company.csv(com, ofile);

to this:

company com = companylist.get(companylist.size()-1); com.csv(ofile);

and change csv method this:

public void csv(printwriter ofile){

i think correct because csv method printing out instance variables contained within com instance -- right?


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