Hi!
I have a problem with getting an arraylist to work within a JList. I have posted 5 classes; a GUI class - GrafikInl6, a class with most of the methods - Functionality, and then an abstract baseclass Runner6 with the two subclasses EliteRunner6 and Jogger6.
My problem is the method - showWinnerEliteRunners()in GrafikInl6. When pushing the button "Show eliterunner winner" the eliterunner with the best time should be shown. But this do not happen. I see that the arraylist doesn't seem to work - the arraylist do always have the size = 0. Even though I keep on adding new runners to the JList. But I can't figure out how to get the arraylist to start increase it's value.
Could some friendly soul maybe help me out here?
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.util.ArrayList;
public class GrafikInl6 extends JFrame implements ActionListener
{ private ArrayList<Runner6> runners;
private Funktionality funkJ;
private Funktionality funkE;
private Container contJ;
private Container contE;
private JList joggerList;
private JList eliteRunnerList;
private JTextField nameJField;
private JTextField startNrJField;
private JTextField timeJField;
private JTextField tshirtJField;
private JTextField nameEField;
private JTextField startNrEField;
private JTextField timeEField;
private JTextField clubEField;
private JTextField licenseEField;
public static void main(String[] args)
{
GrafikInl6 frame = new GrafikInl6();
frame.setVisible(true) ;
}
public GrafikInl6()
{
initiateInstanceVariables();
buildFrame();
}
private void initiateInstanceVariables()
{ this.runners = new ArrayList<Runner6>(20);
funkJ = new Funktionality();
funkE = new Funktionality();
contJ = getContentPane();
contE = getContentPane();
nameJField = new JTextField();
nameJField.setBorder(BorderFactory.createTitledBorder("Name"));
startNrJField = new JTextField();
startNrJField.setBorder(BorderFactory.createTitledBorder("Startnumber"));
timeJField = new JTextField();
timeJField.setBorder(BorderFactory.createTitledBorder("Time"));
tshirtJField = new JTextField();
tshirtJField.setBorder(BorderFactory.createTitledBorder("T-shirt registration"));
joggerList = new JList(this.runners.toArray());
joggerList.setBorder(BorderFactory.createTitledBorder("Registered jogger"));
nameEField = new JTextField();
nameEField.setBorder(BorderFactory.createTitledBorder("Name"));
startNrEField = new JTextField();
startNrEField.setBorder(BorderFactory.createTitledBorder("Startnumber"));
timeEField = new JTextField();
timeEField.setBorder(BorderFactory.createTitledBorder("Time"));
clubEField = new JTextField();
clubEField.setBorder(BorderFactory.createTitledBorder("Club"));
licenseEField = new JTextField();
licenseEField.setBorder(BorderFactory.createTitledBorder("Licensnumber"));
eliteRunnerList = new JList(this.runners.toArray());
eliteRunnerList.setBorder(BorderFactory.createTitledBorder("Registered eliterunner"));
}
private void buildFrame()
{
setTitle("Runners cup");
setSize(1000,400);
contJ.setLayout(new GridLayout(1,2));
contE.setLayout(new GridLayout(1,2));
JPanel leftPanel = new JPanel(new GridLayout(7,1));
leftPanel.add(nameJField);
leftPanel.add(startNrJField);
leftPanel.add(timeJField);
leftPanel.add(tshirtJField);
JButton addButton = new JButton("Add jogger");
addButton.addActionListener(this);
leftPanel.add(addButton);
JButton showButton = new JButton("Show jogger");
showButton.addActionListener(this);
leftPanel.add(showButton);
JButton clearButton = new JButton("Clear");
clearButton.addActionListener(this);
leftPanel.add(clearButton);
contJ.add(leftPanel);
contJ.add(joggerList);
buildMenu();
setDefaultCloseOperation(EXIT_ON_CLOSE);
JPanel rightPanel = new JPanel(new GridLayout(9,1));
rightPanel.add(nameEField);
rightPanel.add(startNrEField);
rightPanel.add(timeEField);
rightPanel.add(clubEField);
rightPanel.add(licenseEField);
JButton addButtonE = new JButton("Add eliterunner");
addButtonE.addActionListener(this);
rightPanel.add(addButtonE);
JButton showButtonE = new JButton("Show eliterunner");
showButtonE.addActionListener(this);
rightPanel.add(showButtonE);
JButton winButtonE = new JButton("Show eliterunner winner");
winButtonE.addActionListener(this);
rightPanel.add(winButtonE);
JButton clearButtonE = new JButton("Clear");
clearButtonE.addActionListener(this);
rightPanel.add(clearButtonE);
contE.add(rightPanel);
contE.add(eliteRunnerList);
}
private void buildMenu()
{
JMenuBar menuBar = new JMenuBar();
JMenu menu = new JMenu("Archive");
menuBar.add(menu);
JMenuItem menuItem = new JMenuItem("Add runner");
menu.add(menuItem);
menuItem.addActionListener(this);
menuItem = new JMenuItem("End");
menu.add(menuItem);
menuItem.addActionListener(this);
setJMenuBar(menuBar);
}
public void actionPerformed(ActionEvent event)
{
String theText = event.getActionCommand();
if(theText.equals("Add jogger"))
{
addJogger();
}
if(theText.equals("Show jogger"))
{
showSelectedJoggers();
}
if(theText.equals("Add eliterunner"))
{
addEliteRunner();
}
if(theText.equals("Show eliterunner"))
{
showSelectedEliteRunners();
}
if(theText.equals("Show eliterunner winner"))
{
showWinnerEliteRunners();
}
if(theText.equals("Rensa"))
{
clear();
}
if (theText.equals("Add jogger"))
{
addJogger();
}
if (theText.equals("Add eliterunner"))
{
addEliteRunner();
}
if (theText.equals("End"))
{
System.exit(0);
}
}
private void addJogger()
{
funkJ.addJogger(nameJField.getText(), startNrJField.getText(), timeJField.getText(), tshirtJField.getText());
joggerList.setListData(funkJ.getAllJoggers().toArray());
clear();
}
private void addEliteRunner()
{
funkE.addEliteRunner(nameEField.getText(), startNrEField.getText(), timeEField.getText(), clubEField.getText(), licenseEField.getText());
eliteRunnerList.setListData(funkE.getAllEliteRunners().toArray());
clear();
}
private void showSelectedJoggers()
{
int position = joggerList.getSelectedIndex();
if(position > -1)
{
nameJField.setText(funkJ.getNameForJoggerAt(position));
startNrJField.setText(funkJ.getStartNrForJoggerAt(position));
timeJField.setText(funkJ.getTimeForJoggerAt(position));
tshirtJField.setText(funkJ.getTshirtRegForJoggerAt(position));
}
else
{
JOptionPane.showMessageDialog(null, "Du måste markera en person i listan!");
}
}
private void showSelectedEliteRunners()
{
int position = eliteRunnerList.getSelectedIndex();
if(position > -1)
{
nameEField.setText(funkE.getNameForEliteRunnerAt(position));
startNrEField.setText(funkE.getStartNrForEliteRunnerAt(position));
timeEField.setText(funkE.getTimeForEliteRunnerAt(position));
clubEField.setText(funkE.getClubForEliteRunnerAt(position));
licenseEField.setText(funkE.getLicenseForEliteRunnerAt(position));
}
else
{
JOptionPane.showMessageDialog(null, "Du måste markera en person i listan!");
}
}
private void showWinnerEliteRunners()
{
int minIndex = funkE.findMinIndex(runners);
nameEField.setText(funkE.getNameForEliteRunnerAt(minIndex));
startNrEField.setText(funkE.getStartNrForEliteRunnerAt(minIndex));
timeEField.setText(funkE.getTimeForEliteRunnerAt(minIndex));
clubEField.setText(funkE.getClubForEliteRunnerAt(minIndex));
licenseEField.setText(funkE.getLicenseForEliteRunnerAt(minIndex));
}
private void clear()
{
nameJField.setText("");
startNrJField.setText("");
timeJField.setText("");
tshirtJField.setText("");
nameEField.setText("");
startNrEField.setText("");
timeEField.setText("");
clubEField.setText("");
licenseEField.setText("");
}
}import java.util.ArrayList;
public class Funktionality
{
private ArrayList<Runner6> runners;
private String startNumber;
private String name;
private String time;
public Funktionality()
{
this.runners = new ArrayList<Runner6>(20);
}
public void addJogger( String name,String startNumber, String time, String order)
{
this.runners.add(new Jogger6( name, startNumber, time, order));
}
public ArrayList<Runner6> getAllJoggers()
{
return this.runners;
}
public void addEliteRunner( String name,String startNumber, String time, String club, String licenseNumber)
{
this.runners.add(new EliteRunner6(name,startNumber, time, club, licenseNumber));
}
public ArrayList<Runner6> getAllEliteRunners()
{
return this.runners;
}
public int findMinIndex(ArrayList<Runner6> runners)
{
int minIndex = 0;
for (int i = 0; i < this.runners.size() ; i++)
{
if (this.runners.get(i) instanceof EliteRunner6 )
{
String text1 = getTimeForEliteRunnerAt(i);
String term1 = "";
double nr1 = 0;
term1 = text1.substring(0, text1.length());
nr1 = Double.parseDouble(term1);
String text2 = getTimeForEliteRunnerAt(minIndex);
String term2 = "";
double nr2 = 0;
term2 = text2.substring(0, text2.length());
nr2= Double.parseDouble(term2);
if (nr1 < nr2)
{
minIndex = i;
}
}
}
return minIndex;
}
public String getNameForJoggerAt(int position)
{
return (this.runners.get(position)).getName();
}
public String getStartNrForJoggerAt(int position)
{
return (this.runners.get(position)).getStartNumber();
}
public String getTimeForJoggerAt(int position)
{
return (this.runners.get(position)).getTime();
}
public String getTshirtRegForJoggerAt(int position)
{
return ((Jogger6)this.runners.get(position)).getOrder();
}
public String getNameForEliteRunnerAt(int position)
{
return (this.runners.get(position)).getName();
}
public String getStartNrForEliteRunnerAt(int position)
{
return (this.runners.get(position)).getStartNumber();
}
public String getTimeForEliteRunnerAt(int position)
{
return (this.runners.get(position)).getTime();
}
public String getClubForEliteRunnerAt(int position)
{
return ((EliteRunner6)this.runners.get(position)).getClub();
}
public String getLicenseForEliteRunnerAt(int position)
{
return ((EliteRunner6)this.runners.get(position)).getLicenseNumber();
}
}public abstract class Runner6
{
// instancevariables
private String startNumber;
private String name;
private String time;
// construktor
public Runner6( String name, String startNumber,String time)
{
this.name = name;
this.startNumber = startNumber;
this.time = time;
}
// methods
public String getStartNumber()
{
return this.startNumber;
}
public String getTime()
{
return this.time;
}
public String getName()
{
return this.name;
}
public void setStartNumber(String startNumber)
{
this.startNumber = startNumber;
}
public void setTime(String time)
{
this.time = time;
}
public void setName(String name)
{
this.name = name;
}
public String toString()
{
return this.name + " " + this.startNumber + " " + this.time + " " + toStringSpec();
}
public abstract String toStringSpec();
}public class Jogger6 extends Runner6 // Jogger6 ärver från Runner6
{
// instansvariabler
private String order;
public Jogger6( String name, String startNumber,String time, String order)
{
super(name,startNumber, time); // anrop till basklassens konstruktor
this.order = order;
}
// metoder
public void setOrder(String order)
{
this.order = order;
}
public String getOrder()
{
return this.order;
}
public String toStringSpec()
{
return this.order + " ";
}
}public class EliteRunner6 extends Runner6 // EliteRunner ärver från Runner
{
// instansvariabler
private String club;
private String licenseNumber;
public EliteRunner6(String name, String startNumber, String time, String club, String licenseNumber)
{
super( name, startNumber, time); // anrop till basklassens konstruktor
this.club = club;
this.licenseNumber = licenseNumber;
}
// metoder
public String getClub()
{
return this.club;
}
public void setClub(String club)
{
this.club = club;
}
public String getLicenseNumber()
{
return this.licenseNumber;
}
public void setLicenseNumber(String licenseNumber)
{
this.licenseNumber = licenseNumber;
}
public String toStringSpec()
{
return this.club + " " + this.licenseNumber;
}
}