java - Get method from a class on an Arraylist -

i made class returns 3 values of arraylist main program when use get() method compiler throws me en error cant find method - symbol. tried same thing doing not arraylist array , seems work. cant figure way array list.

//error on "action evt" show button on second mark of code.

error msg is: "cannot find symbol-method getmarka()".

i posting code below maybe can me.

the class method returns values:

    public class cars {     private string modelo,marka;     private int kyvismos;     public cars(string m,string ma,int k)     {        modelo=m;        marka=ma;        kyvismos=k;     }     public string getmodelo()     {         return modelo;     }     public string getmarka()     {         return marka;     }     public int getkyvismos()     {         return kyvismos;     }     public void setmodelo(string m)     {         modelo=m;     }     public void setmarka(string ma)     {         marka=ma;     }     public void setkyvismos(int k)     {         kyvismos=k;     }     public string tostring()     {         return modelo+","+marka+","+kyvismos;     }   } 

here class gets category-class on top.

    public class myframe extends frame {     arraylist<cars> cars = new arraylist<>();     private button add;     private button show;     private button quit;     public myframe(string title)     {         super(title);         resize(500,300);         setresizable(false);         setlayout(new gridlayout(3,1));         add=new button("add");         show=new button("show");         quit=new button("quit");         add (add);         add (show);         add (quit);     }     public boolean action(event evt,object arg)     {         if(evt.target.equals(add))         {             string value1= joptionpane.showinputdialog("enter car model ");             string value2= joptionpane.showinputdialog("enter car mark ");             int value3= integer.parseint(joptionpane.showinputdialog("enter kyvismos "));             integer i=new integer(value3);             cars.add(new cars(value1,value2,value3));//or pinakas.add(value);         }         else         if(evt.target.equals(show))         {             string s="";             int i;             for(i=0;i<cars.size();i++){               **//here error on cars.getkyvismos() or getmarka() or getmodelo();**               //if(cars.getkyvismos()>1900)               s=s+cars.getmarka()+cars.getmodelo()+"\n";             }             joptionpane.showmessagedialog(null, "cars kyvismo >1900 \n " + s);         }         else         if(evt.target.equals(quit))         {             system.exit(0);         }         return true;     } } 

thanks in advance , sorry if newbie question!

the problem lies in have class cars , arraylist instance cars, , confusing them.

in block example, cars refers list, not individual car.

for(i=0;i<cars.size();i++){ **//here error on cars.getkyvismos() or getmarka() or getmodelo();**     //if(cars.getkyvismos()>1900)     s=s+cars.getmarka()+cars.getmodelo()+"\n"; } 

the arraylist cars not have method getmarka().

you need

for(i=0;i<cars.size();i++){ **//here error on cars.getkyvismos() or getmarka() or getmodelo();**   cars car = cars.get(i);   //if(car.getkyvismos()>1900)     s=s+car.getmarka()+car.getmodelo()+"\n"; }