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A question on an error in a SpringLayout example program

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A question on an error in a SpringLayout example program

Aug 31st, 2005

Hi again.I was just wondering about different layouts I can use with swing and I just came accross a sample program at http://java.sun.com/docs/books/tutor...ut/spring.html anyways there was this example program that I just couldn't find the error.Anyhelp would be welcomed.

The error it is giving is cannot find symbol variable springutilities

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/*
 * A 1.4 application that uses SpringLayout to create a forms-type layout.
 * Other files required: SpringUtilities.java.
 */
 
import javax.swing.*;
import java.awt.*;
 
public class SpringForm {
	/**
	 * Create the GUI and show it.  For thread safety,
	 * this method should be invoked from the
	 * event-dispatching thread.
	 */
	private static void createAndShowGUI() {
		String[] labels = {"Name: ", "Fax: ", "Email: ", "Address: "};
		int numPairs = labels.length;
 
		//Create and populate the panel.
		JPanel p = new JPanel(new SpringLayout());
		for (int i = 0; i < numPairs; i++) {
			JLabel l = new JLabel(labels[i], JLabel.TRAILING);
			p.add(l);
			JTextField textField = new JTextField(10);
			l.setLabelFor(textField);
			p.add(textField);
		}
 
		//Lay out the panel.
		SpringUtilities.makeCompactGrid(p,
									    numPairs, 2, //rows, cols
									    6, 6,		//initX, initY
									    6, 6);	   //xPad, yPad
 
		//Make sure we have nice window decorations.
		JFrame.setDefaultLookAndFeelDecorated(true);
 
		//Create and set up the window.
		JFrame frame = new JFrame("SpringForm");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
		//Set up the content pane.
		p.setOpaque(true);  //content panes must be opaque
		frame.setContentPane(p);
 
		//Display the window.
		frame.pack();
		frame.setVisible(true);
	}
 
	public static void main(String[] args) {
		//Schedule a job for the event-dispatching thread:
		//creating and showing this application's GUI.
		javax.swing.SwingUtilities.invokeLater(new Runnable() {
			public void run() {
				createAndShowGUI();
			}
		});
	}
}
/*
 * A 1.4 application that uses SpringLayout to create a forms-type layout.
 * Other files required: SpringUtilities.java.
 */

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

public class SpringForm {
	/**
	 * Create the GUI and show it.  For thread safety,
	 * this method should be invoked from the
	 * event-dispatching thread.
	 */
	private static void createAndShowGUI() {
		String[] labels = {"Name: ", "Fax: ", "Email: ", "Address: "};
		int numPairs = labels.length;

		//Create and populate the panel.
		JPanel p = new JPanel(new SpringLayout());
		for (int i = 0; i < numPairs; i++) {
			JLabel l = new JLabel(labels[i], JLabel.TRAILING);
			p.add(l);
			JTextField textField = new JTextField(10);
			l.setLabelFor(textField);
			p.add(textField);
		}

		//Lay out the panel.
		SpringUtilities.makeCompactGrid(p,
									    numPairs, 2, //rows, cols
									    6, 6,		//initX, initY
									    6, 6);	   //xPad, yPad

		//Make sure we have nice window decorations.
		JFrame.setDefaultLookAndFeelDecorated(true);

		//Create and set up the window.
		JFrame frame = new JFrame("SpringForm");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		//Set up the content pane.
		p.setOpaque(true);  //content panes must be opaque
		frame.setContentPane(p);

		//Display the window.
		frame.pack();
		frame.setVisible(true);
	}

	public static void main(String[] args) {
		//Schedule a job for the event-dispatching thread:
		//creating and showing this application's GUI.
		javax.swing.SwingUtilities.invokeLater(new Runnable() {
			public void run() {
				createAndShowGUI();
			}
		});
	}
}

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