Re: FlowLayout and lightweight IDEs

In article <489c6ec2$0$4045$b9f67a60@news.newsdemon.com>,
 Knute Johnson <nospam@rabbitbrush.frazmtn.com> wrote:


Knute's right about blocking. There's more here about perceived
performance when loading an image here:

<http://java.sun.com/docs/books/tutorial/uiswing/components/icon.html>

Also, I'm suspicious of overriding the JFrame's paint() method
(inherited from Container), without calling super.paint():

<http://java.sun.com/javase/6/docs/api/java/awt/Component.html#paint(java
..awt.Graphics)>

Absent that, I saw nothing until I tabbed through the fields.

To focus on the FlowLayout aspect of the code, I changed to a JPanel,
which uses FlowLayout by default. I also used an ImageIcon to contain an
image. Sorry, I'm not familiar with the Chart API:

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

public class GoogleDrawImage
{
  public static void main(String[] args)
  {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setContentPane(new ImagePanel());
    frame.setTitle("Google Chart API");
    frame.setSize(600, 300);
    frame.setVisible(true);
  }
}
class ImagePanel extends JPanel implements ActionListener {
  JTextField addressField, appendFieldcht, appendFieldchs,
    appendFieldchd, appendFieldchm, appendFieldchf;
  JLabel lbleGoogleInstr, lbleFieldcht, lbleFieldchs,
    lbleFieldchd, lbleFieldchm, lbleFieldchf;
  JButton btnGetGoogleApis, btnClose;

  public ImagePanel() {
    // Use default FlowLayout.
    addressField = new JTextField(20);
    addressField.setText("http://chart.apis.google.com...");
    appendFieldcht = new JTextField(8);
    appendFieldcht.setText("r");
    appendFieldchs = new JTextField(8);
    appendFieldchs.setText("400x400");
    appendFieldchd = new JTextField(8);
    appendFieldchd.setText("t:70,70,70,70,70,70");
    appendFieldchm = new JTextField(8);
    appendFieldchm.setText("B,FF0000,0,0,5");
    appendFieldchf = new JTextField(8);
    appendFieldchf.setText("c,s,000000");
    lbleGoogleInstr = new JLabel("Complete these:");
    lbleFieldcht = new JLabel("cht is: ");
    lbleFieldchs = new JLabel("chs is: ");
    lbleFieldchd = new JLabel("chd is: ");
    lbleFieldchm = new JLabel("chm is: ");
    lbleFieldchf = new JLabel("chf is: ");
    btnGetGoogleApis = new JButton("GetGoogleApis");
    btnGetGoogleApis.setActionCommand("GrabItAll");
    btnGetGoogleApis.addActionListener(this);
    btnClose = new JButton("Close Application");
    btnClose.setActionCommand("close");
    btnClose.addActionListener(this);
    // Add Components to this container.
    this.add(lbleGoogleInstr);
    this.add(addressField);
    this.add(lbleFieldcht);
    this.add(appendFieldcht);
    this.add(lbleFieldchs);
    this.add(appendFieldchs);
    this.add(lbleFieldchd);
    this.add(appendFieldchd);
    this.add(lbleFieldchm);
    this.add(appendFieldchm);
    this.add(lbleFieldchf);
    this.add(appendFieldchf);
    this.add(btnGetGoogleApis);
    this.add(btnClose);
    try {
      ImageIcon icon = new ImageIcon(new URL(
        "http://www.google.com/logos/olympics08_opening.gif"));
      JLabel imageLabel = new JLabel(icon);
      icon.setImageObserver(imageLabel);
      this.add(imageLabel);
    } catch (MalformedURLException e) {
      System.err.println(e.toString());
    }
  }

  public void actionPerformed(ActionEvent e) {
    if (e.getActionCommand().equals("close")) {
      System.exit(0);
    }
  }
}

[I appreciate your sscce, but some might reasonably be wary of code that
reads from the network and writes to the file system.]

--
John B. Matthews
trashgod at gmail dot com
home dot woh dot rr dot com slash jbmatthews