Help with Combo box and action listener

[sunil menhdiratta]

Hi,

I have problem with below code, i want to populate the value of combobox into textfield,

I have defined action listener- migButtonAction. seems its in the new actionlistener class-migButtonAction, the object combo1 and myField is not visible,

I know it cant be as its defined in main class, Please suggest me . I tried defining those object as public but its not allowing me.

Please help

-Sunil

	import javax.swing.*;

import combo.exitButttonAction;


	import java.awt.*;
	import java.awt.event.ActionEvent;
	import java.awt.event.ActionListener;
	import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
public class test {
	
	

		public static void main(String args[]){
			JFrame frame = new JFrame("Test");

			
			JPanel panel1 = new JPanel();
			String[] env = {"env1", "env2", "env3"};
			JButton migButton = new JButton("mig");
			JButton exitButton = new JButton("exit");
			JTextField myField = new JTextField(20);
			JComboBox combo1 = new JComboBox(env);
			
			frame.add(panel1);
			panel1.add(migButton);
			panel1.add(exitButton);
			
			panel1.add(combo1);
			panel1.add(myField);
			
			
			migButton.addActionListener(new migButtonAction());
			exitButton.addActionListener(new exitButtonAction());
			
			frame.setSize(500,500);
			frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
			frame.setVisible(true);
			

		}
		
		public class migButtonAction implements ActionListener{
			public void actionPerformed(ActionEvent e){
				
                              // I Have problem here
				
                               String str = (String)combo1.getSelectedValue();
				myField.setText(str);
			}
		}
		
		public class exitButtonAction implements ActionListener{
			public void actionPerformed(ActionEvent e){
				
			System.exit(0);
			}
		}

}

[Arun Chidam]

check the below code with some modification from your code......

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

public class Test1 extends JFrame {

    JButton migButton;
    JButton exitButton;
    JTextField myField;
    JComboBox combo1;

    Test1() {
        init();
    }

    void init() {
        JPanel panel1 = new JPanel();
        String[] env = {"env1", "env2", "env3"};
        migButton = new JButton("mig");
        exitButton = new JButton("exit");
        myField = new JTextField(20);
        combo1 = new JComboBox(env);

        add(panel1);
        panel1.add(migButton);
        panel1.add(exitButton);

        panel1.add(combo1);
        panel1.add(myField);


        migButton.addActionListener(new migButtonAction());
        exitButton.addActionListener(new exitButtonAction());

        setSize(500, 500);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible(true);
    }

    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {

            public void run() {
                new Test1().setVisible(true);
            }
        });
    }

    public class migButtonAction implements ActionListener {

        public void actionPerformed(ActionEvent e) {

            // I Have problem here
            String str = (String)combo1.getSelectedItem();
            myField.setText(str);
        }
    }

    public class exitButtonAction implements ActionListener {

        public void actionPerformed(ActionEvent e) {

            System.exit(0);
        }
    }
}