Event handling

[smallmos1]

i have a JTextField - nameEntryField
another JTextField - nameDisplayField
and a JButton - enterButton.

when a user enters their name in the nameEntryField and clicks enter, the name should then be displayed in the nameDisplayField. in my actionPerformed method i can't get this to happen. is their a particular method like clickEvent(), or something similar to do this?

maybe something like:

public void actionPerformed(ActionEvent e) 
	{
		if (enterButton.[some method](true))
		{
			nameDisplayField = nameEntryField;
		}
	}

is that the right way to go about this? if not, could someone please explain the correct way.

thanks

ps, i've added an actionListener to enterButton and nameEntryField.

[KevinWorkman]

is that the right way to go about this? if not, could someone please explain the correct way.

No. That probably won't change anything.

I think you're looking for something more like the setText() method. Check out the API for JTextField: JTextField (Java Platform SE 6)

[smallmos1]

i've tried the setText method in this way:

nameDisplayField.setText(nameEntryField);

but i'm being prompted to change to setCaret() or setToolTipText();

do i have to change the data stored in name entry field to a String then pass it through the setText() method?

[KevinWorkman]

The setText() method takes a String parameter. You're giving it a JTextField. You want to give it that JTextField's text. Hint: do you see a way to get the text of a JTextField?

[smallmos1]

something like String name = nameEntryField.toString();
then, nameDisplayField.setText(name); ??

[smallmos1]

ok that seems to be kind of working, but whats being displayed in the absolute garbage....

javax.swing.JTextField[,57,26,169x20,layout=javax.swing.plaf.basic.BasicT extUI$UpdateHandler,alignmentX=0.0,alignmentY=0.0, border=javax.swing.plaf.BorderUIResource$CompoundB orderUIResource@2f93c0cf,flags=296,maximumSize=,mi nimumSize=,preferredSize=,caretColor=sun.swing.Pri ntColorUIResource[r=51,g=51,b=51],disabledTextColor=javax.swing.plaf.ColorUIResourc e[r=184,g=207,b=229],editable=true,margin=javax.swing.plaf.InsetsUIRes ource[top=0,left=0,bottom=0,right=0],selectedTextColor=sun.swing.PrintColorUIResource[r=51,g=51,b=51],selectionColor=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],columns=15,columnWidth=11,command=,horizontalAlig nment=LEADING]

i have no idea where this is coming from!

i'll post my code there could be an error that i havn't noticed

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

public class MyTextField extends JFrame implements ActionListener
{
	private JLabel enterNameLabel;
	private JButton enterButton;
	private JTextField nameEntryField, nameDisplayField;
	private Container  contentPane;
	
	public MyTextField()
	{
		contentPane = getContentPane();
		
		setTitle("Name Entry");
		setSize(250,175);
		setResizable(true);
		setLocation(150, 250);
		
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		
		setLayout(new FlowLayout());
		contentPane.setBackground(Color.lightGray);
		
		enterNameLabel = new JLabel("Please enter your name");
		enterNameLabel.setSize(100, 30);
		add(enterNameLabel);
		
		this.nameEntryField = new JTextField(15);
		add(nameEntryField);
		
		this.nameDisplayField = new JTextField(15);
		add(nameDisplayField);
		
		this.enterButton = new JButton("Enter");
		enterButton.setSize(80, 30);
		add(enterButton);
		
		enterButton.addActionListener(this);
		nameEntryField.addActionListener(this);
		nameDisplayField.addActionListener(this);
	}
	
	public void actionPerformed(ActionEvent e) 
	{
		String name = nameEntryField.toString();
		
			nameDisplayField.setText(name);
	}
	
	public static void main(String[] args)
	{
		MyTextField firstTextField = new MyTextField();
		firstTextField.setVisible(true);
	}

}

[JosAH]

ok that seems to be kind of working, but whats being displayed in the absolute garbage.... i have no idea where this is coming from!

I do; that's no garbage, that's how a JTextField displays itself in text form: it shows you everything that can be important to you except the text it contains. When you want to set the text of a JTextfield a to a JTextField b you have to get the text from a and set it to be the text contained by b, so:

b.setText(a.getText());

and indeed you can do that in yout button's event listener.

kind regards,

Jos

[smallmos1]

that's working perfectly now, thanks.