Cannot find a Vector within a Vector

Question

Yo. Another noob askin about elements within a Vector.
I'm working on a OOP project in BlueJ. First time doing so, so my code is still kinda procedural (with many listeners in the same document, etc etc)
I'm creating a simulation of a 7-a-side football game. I have stored the players of each team into a vector (e.g Vector 'Chelsea' would contain 7 player objects).
I've only created three teams for simplicity, and stored these three Vectors into another Vector called 'teams'.
(the whole purpose of storing them in vectors btw, is so I don't have to pass many different player objects as arguments -
i can just send the vector, and extract them within the Listener classes)
I'm now in the new class (Start_game) and i've passed the vector to the class.
When I use the statement:
                 if (teams.contains(Arsenal))
                              +some code+
                 }I get the error message: cannot find variable 'Arsenal', when I try to compile the program.
Here's the code for the first class:
* Write a description of class MainWindow here.
* @author (your name)
* @version (a version number or a date)
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.util.Vector;
import javax.swing.BoxLayout;
public class Choose_player
    String t_chosen1;
    String t_chosen2;
    TextArea playerinfo1;
    TextArea playerinfo2;
    Vector teams = new Vector();
//    Vector Arsenal = new Vector(4); // this will store Player objects with "Arsenal" in their team variable
    Vector Arsenal = new Vector(4);
        Player Adebayor = new Striker();
        Player Walcott = new Striker();
        Player Fabregas = new Midfielder();
        Player Denilson = new Midfielder();
        Player Gallas = new Defender();
        Player Eboue = new Defender();
        Player Lehmann = new Goalkeeper();       
//    Arsenal.insertElementAt(Adebayor, 0);
//    <Player>Arsenal</Player>.addElement(<Player>Adebayor);
    // learn collections - BIG TYME - refer to java site (url is in txt file)
    Vector Chelsea = new Vector(4); // this vector will store the Player objects whose team variable
                                    // contains the String "Chelsea"
        Player Drogba = new Striker();
        Player Anelka = new Striker();
        Player Lampard = new Midfielder();
        Player Phillips = new Midfielder();
        Player ACole = new Defender();
        Player Terry = new Defender();
        Player Cech = new Goalkeeper();
//        int w = Chelsea.Size();
    Vector ManU = new Vector(4);    // this vector will store the Player objects whose team variable
                                    // contains the String "ManU"
        Player Rooney = new Striker();
        Player Tevez = new Striker();
        Player Giggs = new Midfielder();
        Player Ronaldo = new Midfielder();
        Player Ferdinand = new Defender();
        Player Brown = new Defender();
        Player Sar = new Goalkeeper();
    public void mainfalse(String t1, String t2)
        this.t_chosen1 = t1;
        this.t_chosen2 = t2;
        Frame m_frame = new mainframe("Select Captain", t_chosen1, t_chosen2, teams);
        m_frame.setSize(1200, 700);
        m_frame.setVisible(true);
    class mainframe extends Frame
        Vector teams;
        public mainframe(String title, String t_chosen1, String t_chosen2, Vector teams)
            super(title);
            this.teams = teams;
            setLayout(new FlowLayout());
//            setLayout(new GridLayout());
//            setLayout(new CardLayout());
//            setLayout(new RelativeLayout());
//            setLayout(new BoxLayout(m_frame, - FINISH EDITING BoxLayout statement
// -------- ADD PLAYERS TO VECTOR -------- //           
            Arsenal.addElement(Adebayor);
            Arsenal.addElement(Walcott);
            Arsenal.addElement(Fabregas);
            Arsenal.addElement(Denilson);           
            Arsenal.addElement(Gallas);
            Arsenal.addElement(Eboue);           
            Arsenal.addElement(Lehmann);           
            Chelsea.addElement(Drogba);
            Chelsea.addElement(Anelka);           
            Chelsea.addElement(Lampard);
            Chelsea.addElement(Phillips);           
            Chelsea.addElement(ACole);
            Chelsea.addElement(Terry);           
            Chelsea.addElement(Cech);
            ManU.addElement(Rooney);
            ManU.addElement(Tevez);           
            ManU.addElement(Giggs);
            ManU.addElement(Ronaldo);           
            ManU.addElement(Ferdinand);
            ManU.addElement(Brown);           
            ManU.addElement(Sar);
            teams.addElement(Arsenal);
            teams.addElement(Chelsea);
            teams.addElement(ManU);
// --------------- FIRST TEAM - CAPTAIN SELECTION ----------------      
            java.awt.List playerList1 = new java.awt.List(5);
            // CREATES A BOX WITH A LIST OF TEAMS (it can view 5 before needing a scroll bar)
            // (full specification needed when declaring -
            // java confused with List in 'awt', and list in 'util'.
            if (t_chosen1.equals("Arsenal"))
                playerList1.add("Adebayor");
                playerList1.add("Walcott");
                playerList1.add("Fabregas");
                playerList1.add("Denilson");
                playerList1.add("Gallas");
                playerList1.add("Eboue");
                playerList1.add("Lehmann");
            } // if the chosen team is Arsenal, display chosen teams to be Arsenal players
            else if (t_chosen1.equals("Chelsea"))
                playerList1.add("Lampard");
                playerList1.add("Drogba");
                playerList1.add("Anelka");
                playerList1.add("Wright-Phillips");
                playerList1.add("Cole");
                playerList1.add("Terry");
                playerList1.add("Cech");
            } // if the chosen team is Chelsea, display chosen teams to be Chelsea players
            else if (t_chosen1.equals("Manchester United"))
                playerList1.add("Ronaldo");
                playerList1.add("Rooney");
                playerList1.add("Tevez");
                playerList1.add("Giggs");
                playerList1.add("Ferdinand");
                playerList1.add("Brown");
                playerList1.add("Sar");
            } // ditto
            add(playerList1);
            playerList1.addItemListener(new p_list_Listener1(playerList1));
            // add itemListener to 'playerList' object
            // - pass playerList object to listener to use getSelected() method
            playerinfo1 = new TextArea(10, 38);
            add(playerinfo1);
// --------------- SECOND TEAM - CAPTAIN SELECTION ---------------- - same as above, for team2
            java.awt.List playerList2 = new java.awt.List(5); // CREATES A BOX WITH A LIST OF TEAMS (it can view 5 before needing a scroll bar)
// add "Adebayor" as a selectable Captain for the Arsenal team
            if (t_chosen2.equals("Arsenal"))
                playerList2.add("Adebayor");
                playerList2.add("Walcott");
                playerList2.add("Fabregas");
                playerList2.add("Denilson");
                playerList2.add("Gallas");
                playerList2.add("Eboue");
                playerList2.add("Lehmann");
            // add "Lampard" as a selectable Captain for the Chelsea team           
            else if (t_chosen2.equals("Chelsea"))
                playerList2.add("Lampard");
                playerList2.add("Drogba");
                playerList2.add("Anelka");
                playerList2.add("Wright-Phillips");
                playerList2.add("Cole");
                playerList2.add("Terry");
                playerList2.add("Cech");
            // add "Christiano Ronaldo" as a selectable Captain for the Manchester United team           
            else if (t_chosen2.equals("Manchester United"))
                playerList2.add("Ronaldo");
                playerList2.add("Rooney");
                playerList2.add("Tevez");
                playerList2.add("Giggs");
                playerList2.add("Ferdinand");
                playerList2.add("Brown");
                playerList2.add("Sar");
            add(playerList2);
            playerList2.addItemListener(new p_list_Listener2(playerList2));
            playerinfo2 = new TextArea(10, 38);
            add(playerinfo2);
// ------ CHOICE MENU & TEXTFIELD - CHOOSE PLAYER TO SHOW ATTRIBUTES IN TEXTFIELD - TEAM 1 ---------
            Choice p_choice1 = new Choice();
            // new dropdown menu - choosing which player's info to display
            p_choice1.add("-- Choose player to display info --");
            if (t_chosen1.equals("Arsenal"))
                p_choice1.add("Emmanuel Adebayor"); //Striker
                p_choice1.add("Theo Walcott"); //Striker
                p_choice1.add("Cesc Fabregas"); //Mid
                p_choice1.add("Denilson"); //Mid
                p_choice1.add("William Gallas");//Def
                p_choice1.add("Emmanuel Ebou�");//Def
                p_choice1.add("Jens Lehmann");//Keeper
            else if (t_chosen1.equals("Chelsea"))
                p_choice1.add("Didier Drogba");//Striker
                p_choice1.add("Nikolas Anelka");//Str
                p_choice1.add("Frank Lampard");//Mid
                p_choice1.add("Shaun Wright-Phillips");//Mid
                p_choice1.add("Ashley Cole");//Def
                p_choice1.add("John Terry");//Def
                p_choice1.add("Petr Cech");//Keeper
            else if (t_chosen1.equals("Manchester United"))
                p_choice1.add("Wayne Rooney");//Str
                p_choice1.add("Carlos T�vez");//Str
                p_choice1.add("Ryan Giggs");//Mid
                p_choice1.add("Christiano Ronaldo");//Mid
                p_choice1.add("Rio Ferdinand");//Def
                p_choice1.add("Wes Brown");//Def
                p_choice1.add("Edwin van der Sar");//Keeper
            add(p_choice1);
            TextField nameField1 = new TextField("", 30);
            add(new Label("Name"));
            add(nameField1);
            TextField ageField1 = new TextField("", 30);
            add(new Label("Age"));
            add(ageField1);
            TextField teamField1 = new TextField("", 30);
            add(new Label("Team"));
            add(teamField1);
            TextField speedField1 = new TextField("", 30);
            add(new Label("Speed"));
            add(speedField1);
            TextField defenceField1 = new TextField("", 30);
            add(new Label("Defence"));
            add(defenceField1);
            TextField accuracyField1 = new TextField("", 30);
            add(new Label("Accuracy"));
            add(accuracyField1);
            TextField positionField1 = new TextField("", 30);
            add(new Label("Position"));
            add(positionField1);
            Vector fields1 = new Vector(8, 2); // PASS TO CHOICE LISTENER
            fields1.add(nameField1);
            fields1.add(ageField1);
            fields1.add(teamField1);
            fields1.add(speedField1);
            fields1.add(defenceField1);
            fields1.add(accuracyField1);
            fields1.add(positionField1);
            p_choice1.addItemListener(new ChoiceListener(fields1, teams, p_choice1, t_chosen1));
            // pass the teams vector to variable, to:
            // 1) create players
            // 2) call methods to show their different attributes in each field
// ------- CHOICE MENU & TEXTFIELD - CHOOSE PLAYER TO SHOW ATTRIBUTES IN TEXTFIELD - TEAM 2 ---------           
            Choice p_choice2 = new Choice();
            p_choice2.add("-- Choose player to display info --");
            if (t_chosen2.equals("Arsenal"))
                p_choice2.add("Emmanuel Adebayor"); //Striker
                p_choice2.add("Theo Walcott"); //Striker
                p_choice2.add("Cesc Fabregas"); //Mid
                p_choice2.add("Denilson"); //Mid
                p_choice2.add("William Gallas");//Def
                p_choice2.add("Emmanuel Ebou�");//Def
                p_choice2.add("Jens Lehmann");//Keeper           
            else if (t_chosen2.equals("Chelsea"))
                p_choice2.add("Didier Drogba");//Striker
                p_choice2.add("Nikolas Anelka");//Str
                p_choice2.add("Frank Lampard");//Mid
                p_choice2.add("Shaun Wright-Phillips");//Mid
                p_choice2.add("Ashley Cole");//Def
                p_choice2.add("John Terry");//Def
                p_choice2.add("Petr Cech");//Keeper
            else if (t_chosen2.equals("Manchester United"))
                p_choice2.add("Wayne Rooney");//Str
                p_choice2.add("Carlos T�vez");//Str
                p_choice2.add("Ryan Giggs");//Mid
                p_choice2.add("Christiano Ronaldo");//Mid
                p_choice2.add("Rio Ferdinand");//Def
                p_choice2.add("Wes Brown");//Def
                p_choice2.add("Edwin van der Sar");//Keeper
            add(p_choice2);
            TextField nameField2 = new TextField("", 30);
//            nameField1.setText("Here, you store the name");
            add(new Label("Name"));
            add(nameField2);
            TextField ageField2 = new TextField("", 30);
            add(new Label("Age"));
            add(ageField2);
            TextField teamField2 = new TextField("", 30);
            add(new Label("Team"));
            add(teamField2);
            TextField speedField2 = new TextField("", 30);
            add(new Label("Speed"));
            add(speedField2);
            TextField defenceField2 = new TextField("", 30);
            add(new Label("Defence"));
            add(defenceField2);
            TextField accuracyField2 = new TextField("", 30);
            add(new Label("Accuracy"));
            add(accuracyField2);
            TextField positionField2 = new TextField("", 30);
            add(new Label("Position"));
            add(positionField2);
            Vector fields2 = new Vector(8, 2); // PASS TO CHOICE LISTENER
            fields2.add(nameField2);
            fields2.add(ageField2);
            fields2.add(teamField2);
            fields2.add(speedField2);
            fields2.add(defenceField2);
            fields2.add(accuracyField2);
            fields2.add(positionField2);
            p_choice2.addItemListener(new ChoiceListener(fields2, teams, p_choice2, t_chosen2));
            // pass the teams vector to variable, to:
            // 1) create players
            // 2) call methods to show their different attributes in each field
// --------------- add START GAME button ----------------           
            Button c = new Button("Start Game");
            add(c);
            c.addActionListener(new startgameListener(teams));
// --------------- WINDOW CLOSER LISTENER ----------------
            addWindowListener(new WindowCloser()); // no object relation - you are adding a listener to the FRAME
// --------------------- p_list_listener1 - listener for playerList1 ------------------
    class p_list_Listener1 implements ItemListener
        java.awt.List playerslist;
        public p_list_Listener1(java.awt.List playerslist)
            this.playerslist = playerslist;
        public void itemStateChanged(ItemEvent evt)
            String sth = playerslist.getSelectedItem();
// ----------- PLAYER BIO'S ------------ //
// ---- ARSENAL:
            String adebayorBio = "Emmanuel Adebayor (born 26 February 1984 in Lom�) is \na Togolese " +
                                "football player of Nigerian descent who \ncurrently plays for Arsenal.";
            String walcottBio = "Theo James Walcott (born 16 March 1989 in \nStanmore, London) is an " +
                                "English footballer of Caribbean \ndescent renowned for his pace, who " +
                                "currently plays for \nArsenal, having signed there from Southampton on" +
                                " 20 January 2006.";
            String fabregasBio = "Francesc Cesc F�bregas Soler (born 4 May 1987 in Arenys \nde Mar, " +
                                "Catalonia, Spain) is a Spanish footballer \nwho plays as a central " +
                                "midfielder for Arsenal in the \nEnglish Premier League and for the" +
                                " Spanish national team.";
            String denilsonBio = "Den�lson Pereira Neves, known as Den�lson (born on \nFebruary 16, 1988 " +
                                "in S�o Paulo, Brazil) is a Brazilian \nfootballer who usually plays as" +
                                " a midfielder. He plays for English \nside Arsenal and is currently the" +
                                " captain of \nthe Brazil under-20 national team.";
            String gallasBio =  "William Gallas, (born 17 August 1977 in Asni�res-sur-Seine), \nis a French" +
                                " international footballer of Guadeloupian \ndescent who currently plays for " +
                                "and captains \nArsenal in the English Premier League.";                   
            String eboueBio = "Emmanuel Ebou� (born June 4, 1983 in Abidjan, C�te d'Ivoire) \nis an Ivorian " +
                              "football player who currently plays for \nArsenal.";
            String lehmannBio = "Jens Lehmann (German, born November 10, 1969 in Essen) is an award-winning German football goalkeeper who plays for Arsenal and for the German national team. He was voted Best European Goalkeeper twice in his career, and he has been selected for three World Cup squads.";
// ---- CHELSEA:        
            String lampardBio = "Frank James Lampard, Jr. (born 20 June 1978) is an \nEnglish football " +
                                "player currently at Chelsea and \npreviously with West Ham United and Swansea City.";
            String drogbaBio = "Didier Yves Drogba T�bily (born March 11, 1978 in Abidjan, C�te d'Ivoire) is a footballer from C�te d'Ivoire who currently plays for Chelsea in the English Premier League.";                   
            String anelkaBio = "Nicolas Anelka (born March 14, 1979 in Versailles, France) is a French footballer who plays in the forward position.";
            String phillipsBio = "Shaun Cameron Wright-Phillips (born 25 October 1981 in Greenwich, London) is an English football player of Jamaican and Grenadian descent.";
            String coleBio = "Ashley Cole (born 20 December 1980, Stepney, London) is an English footballer of Barbadian descent. Cole plays left back for Chelsea and for the England national team.";
            String terryBio = "John George Terry (born December 7, 1980 in Barking, London) is an English professional footballer. Terry plays as a centre back and is the captain of Chelsea in the English Premier League and officially for the England national football team.";
            String cechBio = "Petr Cech (born 20 May 1982 in Plze?, Czechoslovakia, now Czech Republic) is a Czech international football goalkeeper who is currently contracted to English Premier League football club Chelsea F.C., for whom he has played since July 2004.";
// ---- MANU:
            String ronaldoBio = "Cristiano Ronaldo dos Santos Aveiro, OIH (pronounced \n[k?i??ti?nu ?u?na?du])," +
                                "(born 5 February 1985 in Funchal, \nMadeira), better known as Cristiano Ronaldo, is a " +
                                "\nPortuguese professional footballer. He plays both for \nthe English Premier League club " +
                                "Manchester United and \nthe Portuguese national team."; 
            String rooneyBio = "Wayne Mark Rooney (born 24 October 1985 in Liverpool, Merseyside) is an English footballer who currently plays for the English Premier League club Manchester United and the England national team.";
            String tevezBio = "Carlos Alberto T�vez (born on 5 February 1984 in Ciudadela, Buenos Aires) is an Argentine footballer who currently plays for Premier League club Manchester United. He was described by Diego Maradona as the 'Argentine prophet for the 21st century.'";
            String giggsBio = "Ryan Joseph Giggs OBE[1] (born Ryan Joseph Wilson on 29 November 1973 in Ely, Cardiff) is a Welsh footballer currently playing for Manchester United in the English Premiership, and formerly for the Welsh national team prior to his retirement from international football on 2 June 2007.";
            String ferdinandBio = "Rio Gavin Ferdinand (born 7 November 1978 in Peckham, London) is an English footballer of mixed St Lucian,and Anglo-Irish descent. He plays at centre-back for Manchester United in the Premier League and at the international level for the England national football team.";
            String brownBio = "Wes 'Baked Bean' Michael Brown (born 13 October 1979 in Longsight, Manchester) is an English football player who plays as a defender for Manchester United.";
            String sarBio = "Edwin van der Sar (born 29 October 1970 in Voorhout) is a Dutch professional footballer who plays as a goalkeeper. He is captain of the Dutch national team and plays club football for Manchester United in the English Premier League.";
// --------- TEAM BIO'S DONE!!!!!! ---------- //           
            try
                if (sth.equals("Adebayor")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(adebayorBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
                else if (sth.equals("Walcott")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(walcottBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
                else if (sth.equals("Fabregas")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(fabregasBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
                else if (sth.equals("Denilson")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(denilsonBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
                else if (sth.equals("Gallas")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(gallasBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
                else if (sth.equals("Eboue")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(eboueBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
                else if (sth.equals("Lehmann")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(lehmannBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
// if CHELSEA TEAMS               
                else if (sth.equals("Lampard"))  // if the user selects "Chelsea", show Chelsea's Bio
                    playerinfo1.setText("" + lampardBio);
                    playerinfo1.setEditable(false);                        
                    //t_chosen = sth;               
                else if (sth.equals("Drogba")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(drogbaBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
                else if (sth.equals("Anelka")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(anelkaBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
                else if (sth.equals("Wright-Phillips")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(phillipsBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
                else if (sth.equals("Cole")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(coleBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
                else if (sth.equals("Terry")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(terryBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
                else if (sth.equals("Cech")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(cechBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
// if MANU teams
                else if (sth.equals("Ronaldo")) // .... and so on and so forth
                    playerinfo1.setText("" + ronaldoBio);
                    playerinfo1.setEditable(false);
                else if (sth.equals("Rooney")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(rooneyBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
                else if (sth.equals("Tevez")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(tevezBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
                else if (sth.equals("Giggs")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(giggsBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
                else if (sth.equals("Ferdinand")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(ferdinandBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
                else if (sth.equals("Brown")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(brownBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
                else if (sth.equals("Sar")) // if the user selects "Arsenal", show Arsenal's Bio
                    playerinfo1.setText(sarBio);
                    playerinfo1.setEditable(false);
                    //t_chosen = sth;
            catch (NullPointerException e)
            // if sth equals 'null', catch the exception and continue the program
    } // end class
// --------------- p_list_Listener2 - listener for playerList2 ------------------
    class p_list_Listener2 implements ItemListener
        java.awt.List playerslist;
        public p_list_Listener2(java.awt.List playerslist)
            this.playerslist = playerslist;
        public void itemStateChanged(ItemEvent evt)
            String sth = playerslist.getSelectedItem();
// ----------- PLAYER BIO'S ------------                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         

Answer 1

Ok. Here's my code at last. It comprises of three classes, each creating three different frames:
Class 1:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.Vector;
class class1
    public static void main(String[] param)
        Frame f = new TestFrame("test");
        f.setSize(600, 450);
        f.setVisible(true); // the first window is shown
class TestFrame extends Frame
    public TestFrame(String title)
        super(title);
        setLayout(new FlowLayout());
        Button a = new Button("Click Me");
        add(a);
        a.addActionListener(new ButtonListener());
        addWindowListener(new WindowCloser());
    class ButtonListener implements ActionListener
        public void actionPerformed(ActionEvent evt)
            class2 c_instance = new class2();
            c_instance.mainfalse();
Class 2:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.util.Vector;
import javax.swing.BoxLayout;
public class class2
    Vector teams;
    Vector Arsenal = new Vector(4);
        Player Adebayor = new Striker();
        Player Walcott = new Striker();
        Player Fabregas = new Midfielder();
        Player Denilson = new Midfielder();
        Player Gallas = new Defender();
        Player Eboue = new Defender();
        Player Lehmann = new Goalkeeper();
        // ONLY CREATING ONE TEAM FOR THE PURPOSE OF THE SIMPLIFIED PROGRAM
    public void mainfalse()
        Frame m_frame = new mainframe("class3", teams);
        m_frame.setSize(1200, 700);
        m_frame.setVisible(true);
    class mainframe extends Frame
        Vector teams;
        public mainframe(String title, Vector teams)
            super(title);
            this.teams = teams;
            setLayout(new FlowLayout());
            Arsenal.addElement(Adebayor);
            Arsenal.addElement(Walcott);
            Arsenal.addElement(Fabregas);
            Arsenal.addElement(Denilson);           
            Arsenal.addElement(Gallas);
            Arsenal.addElement(Eboue);           
            Arsenal.addElement(Lehmann);    
            teams.addElement(Arsenal);
// --------------- add START GAME button ----------------           
            Button c = new Button("Start Game");
            add(c);
            c.addActionListener(new startgameListener(teams));
// --------------- WINDOW CLOSER LISTENER ----------------
            addWindowListener(new WindowCloser());           
    class startgameListener implements ActionListener
        Vector teams;
        public startgameListener(Vector t1)
            this.teams = t1;
        public void actionPerformed(ActionEvent evt)
            class3 c_instance1 = new class3();
            c_instance1.gVector(teams);
}*... and Class 3:*
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.Vector;
public class class3
    Vector teams;
    public void gVector(Vector t1)
        this.teams = t1;
        Frame main = new mainframe("Main Window", teams);
        main.setSize(1400, 900);
        main.setVisible(true);
    class mainframe extends Frame
        public mainframe(String title, Vector t1)
            super(title);
            setLayout(new FlowLayout());
            addWindowListener(new WindowCloser());
            Vector teams = t1;
            JOptionPane.showMessageDialog(null, "Hello and WELCOME to The FIRST, annual StickMan Footy!");
            if (teams.contains(Arsenal))
                int t = teams.indexOf(Arsenal);
                Vector Arsenal = (Vector) teams.elementAt(t);
            // getName() is a method declared in the Player class
            // the Player class is the superclass of the Striker class
/*            if (teams.contains(Adebayor))
            And my error message after trying to compile Class 2, is "cannot find symbol - variable Arsenal".
........... help.
Shax