combo boxes and actionlisteners

[carlos123]

this is pretty basic I'm sure for most of you, but im having alot of trouble with the 2. Here is my code its BlueJ. Im sure this is simple for most of you, but im totally lost. Please try to explain to me what you did. here the code below. i know its messy but watever lol. Thanks for your help!


import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Main
{
JFrame f1;
JPanel p1,p2;

GP g1;
JButton Bok,Bcc;
JTextField first,last,age,street,city,gender;

public Main()
{


String[] year = { "1980", "1981", "1982", "1983", "1984", "1985", "1986", "1987", "1988", "1989", "1990", "1991", "1992", "1993", "1994", "1995", "1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003", "2004", "2005", "2006", "2007", "2008" , "2009", "2010"};

JComboBox yearcombo = new JComboBox(year);
yearcombo.setSelectedIndex(29);
yearcombo.addActionListener(actionEvent());
String[] month = { "January", "Febuary", "March", "April", "May", "June", "July", "October", "November", "December"};
JComboBox monthcombo = new JComboBox(month);
monthcombo.setSelectedIndex(9);
monthcombo.addActionListener(this);
String[] state = { "Alabama AL", "Alaska AK" ,"Arizona AZ", "Arkansas AR", "California CA" ,"Colorado CO", "Connecticut CT" ,"Delaware DE", "Florida FL","Georgia GA", "Hawaii HI"," Idaho ID","Illinois IL" ,"Indiana IN", "Iowa IA", "Kansas KS" ,"Kentucky KY" ,"Louisiana LA", "Maine ME", "Maryland MD" ,"Massachusetts MA", "Michigan MI" ,"Minnesota MN" ,"Mississippi MS" ,"Missouri MO", "Montana MT" ,"Nebraska NE", "Nevada NV" ,"New Hampshire NH" ,"New Jersey NJ", "New Mexico NM", "New York NY", "North Carolina NC", "North Dakota ND" ,"Ohio OH" ,"Oklahoma OK", "Oregon OR" ,"Pennsylvania PA" ,"Rhode Island RI", "South Carolina SC", "South Dakota SD" ,"Tennessee TN", "Texas TX" ,"Utah UT", "Vermont VT" ,"Virginia VA" ,"Washington WA", "West Virginia WV", "Wisconsin WI" ,"Wyoming WY"};
JComboBox statecombo = new JComboBox(state);
statecombo.setSelectedIndex(49);
statecombo.addActionListener(this);
String[] gender = {"M","F"};
JComboBox gendercombo = new JComboBox(gender);
gendercombo.setSelectedIndex(1);
gendercombo.addActionListener(this);
f1 = new JFrame("fafafffdas");
f1.setSize(832,669);
Container c1 = f1.getContentPane();


p1 = new JPanel();
p1.setSize(1000,730);
p1.setLayout(new BorderLayout());

first = new JTextField("First Name");
last = new JTextField("Last Name");
age = new JTextField("Age");
street = new JTextField("Street Address");
city = new JTextField("City");
clear = new JButton("Clear");
clear.addActionListener(new ButtonListener());
submit = new JButton("Submit");
submit.addActionListener(new ButtonListener());
Bok = new JButton("Save");
Bok.addActionListener(new ButtonListener());
Bcc = new JButton("Quit");
Bcc.addActionListener(new ButtonListener());

p2 = new JPanel(); //panel to add JLabel and TextField

g1 = new GP();
p1.add(g1,BorderLayout.CENTER);


g1.add(first);
g1.add(last);
g1.add(age);
g1.add(year);
g1.add(gender);
g1.add(street);
g1.add(city);
g1.add(state);
p2.add(submit);
p2.add(Bok);
p2.add(clear);
p2.add(Bcc);

p1.add(p2,BorderLayout.SOUTH); //adds p2 to south (Bottom) Graphics Panel will be added to Center
c1.add(p1);

f1.show();

}





public void actionPerformed(ActionEvent e)
{
JComboBox yearcombo = (JComboBox)e.getSource();
String year = (String)cb.getSelectedItem();

}





private class ButtonListener implements ActionListener
{
public void actionPerformed (ActionEvent event)
{


if (event.getSource() == clear)
{


}

if (event.getSource() == Bok)
{
g1.requestFocus();

}

if (event.getSource() == Bcc)
{

f1.dispose();
}
if (event.getSource() == submit)
{


}

g1.repaint();
}
}


}

[JosAH]

this is pretty basic I'm sure for most of you, but im having alot of trouble with the 2. Here is my code its BlueJ. Im sure this is simple for most of you, but im totally lost. Please try to explain to me what you did. here the code below. i know its messy but watever lol. Thanks for your help!

Please do ask a question that's on target: what doesn't work? What doesn't it do
what you were expecting it to do? What does your code do that you don't want
it to do? Please don't just dump your code here hoping that some kind soul
will repair it without knowing what you want it to do. Programming and design
of code doesn't work like that and this forum doesn't work like that.

kind regards,

Jos

[carlos123]

i just want the combo boxes to compile and just add a basic actionlistener to them

[r035198x]

i just want the combo boxes to compile and just add a basic actionlistener to them

So the code does not compile?
What error message do you get then.

P.S Do not double post.

[Nepomuk]

QUOTE from carlos123

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
 
public class Main
{
        JFrame f1;
        JPanel p1,p2;
 
        GP g1;
        JButton Bok,Bcc;
        JTextField first,last,age,street,city,gender;
 
    public Main()
    {  
 
 
        String[] year = { "1980", "1981", "1982", "1983", "1984", "1985", "1986", "1987", "1988", "1989", "1990", "1991", "1992", "1993", "1994", "1995", "1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003", "2004", "2005", "2006", "2007", "2008" , "2009", "2010"};
 
        JComboBox yearcombo = new JComboBox(year);
        yearcombo.setSelectedIndex(29);
        yearcombo.addActionListener(actionEvent());
        String[] month = { "January", "Febuary", "March", "April", "May", "June", "July", "October", "November", "December"};
        JComboBox monthcombo = new JComboBox(month);
        monthcombo.setSelectedIndex(9);
        monthcombo.addActionListener(this);
        String[] state = { "Alabama AL", "Alaska AK" ,"Arizona AZ", "Arkansas AR", "California CA" ,"Colorado CO", "Connecticut CT" ,"Delaware DE", "Florida FL","Georgia GA", "Hawaii HI"," Idaho ID","Illinois IL" ,"Indiana IN", "Iowa IA", "Kansas KS" ,"Kentucky KY" ,"Louisiana LA", "Maine ME", "Maryland MD" ,"Massachusetts MA", "Michigan MI" ,"Minnesota MN" ,"Mississippi MS" ,"Missouri MO", "Montana MT" ,"Nebraska NE", "Nevada NV" ,"New Hampshire NH" ,"New Jersey NJ", "New Mexico NM", "New York NY", "North Carolina NC", "North Dakota ND" ,"Ohio OH" ,"Oklahoma OK", "Oregon OR" ,"Pennsylvania PA" ,"Rhode Island RI", "South Carolina SC", "South Dakota SD" ,"Tennessee TN", "Texas TX" ,"Utah UT", "Vermont VT" ,"Virginia VA" ,"Washington WA", "West Virginia WV", "Wisconsin WI" ,"Wyoming WY"};
        JComboBox statecombo = new JComboBox(state);
        statecombo.setSelectedIndex(49);
        statecombo.addActionListener(this); 
        String[] gender = {"M","F"};
        JComboBox gendercombo = new JComboBox(gender);
        gendercombo.setSelectedIndex(1);
        gendercombo.addActionListener(this);
        f1 = new JFrame("fafafffdas");
          f1.setSize(832,669);        
        Container c1 = f1.getContentPane();
 
 
        p1 = new JPanel();
        p1.setSize(1000,730);
        p1.setLayout(new BorderLayout());
 
        first = new JTextField("First Name");
        last = new JTextField("Last Name");
        age = new JTextField("Age");
        street = new JTextField("Street Address");
        city = new JTextField("City");
        clear = new JButton("Clear");
        clear.addActionListener(new ButtonListener());
        submit = new JButton("Submit");
        submit.addActionListener(new ButtonListener());
        Bok = new JButton("Save");
         Bok.addActionListener(new ButtonListener());
        Bcc = new JButton("Quit");
         Bcc.addActionListener(new ButtonListener());
 
        p2 = new JPanel();  //panel to add JLabel and TextField
 
        g1 = new GP();    
         p1.add(g1,BorderLayout.CENTER);
 
 
        g1.add(first);
        g1.add(last);
        g1.add(age);
        g1.add(year);
        g1.add(gender);
        g1.add(street);
        g1.add(city);
        g1.add(state);
        p2.add(submit);
        p2.add(Bok);
        p2.add(clear);
        p2.add(Bcc);
 
        p1.add(p2,BorderLayout.SOUTH);      //adds p2 to south (Bottom) Graphics Panel will be added to Center    
        c1.add(p1);
 
        f1.show();
 
    }
 
 
 
 
 
    public void actionPerformed(ActionEvent e) 
    {
        JComboBox yearcombo = (JComboBox)e.getSource();
        String year = (String)cb.getSelectedItem();
 
    }
 
 
 
 
 
    private class ButtonListener implements ActionListener
    {
      public void actionPerformed (ActionEvent event)
      {
 
 
        if (event.getSource() == clear)
        {
 
 
        }    
 
        if (event.getSource() == Bok)
           {
               g1.requestFocus();
 
           }
 
        if (event.getSource() == Bcc)
           {
 
               f1.dispose();
           }
        if (event.getSource() == submit)
        {
 
 
        }
 
          g1.repaint();  
        }
    }
 
 
}

End of Quote

Please use CODE tags when posting. Now, what is line 22 (the line yearcombo.addActionListener(actionEvent());) supposed to do? Shouldn't it look a bit more like this:

yearcombo.addActionListener(new ActionListener()
{
    public void actionPerformed(ActionEvent e)
    {
        // your code here
    }
});
 

Greetings,
Nepomuk