JProgressBar issue

[EdUarDo]

Hi there. In a class that extends from JApplet I have some panels with
several components like JTree (within a JScrollPane), a JList, some
combo boxes, etc...

When the user select an option from a combo, the applet access to a database
and load data into the JTree and JList components. What I want is to show
a JProgressBar with indeterminate finish time, while data is being load.

I know how to create an indeterminate JProgressBar:

JProgressBar bar = new JProgressBar();
bar.setStringPainted(true);
bar.setString("");
bar.setIndeterminate(true);

and I add it to my applet when user change the selected item from a combo box:

this.getContentPane().add(bar);

But the bar it isn't shown. What am I doing wrong?

 

[Andrew Thompson]

Hi there. In a class that extends from JApplet
URL?

...I have some panels with
several components like JTree (within a JScrollPane), a JList,

..some combo boxes, etc...

When the user select an option from a combo, the applet access to a database
and load data into the JTree and JList components. What I want is to show
a JProgressBar with indeterminate finish time, while data is being load. ...
But the bar it isn't shown. What am I doing wrong?

Attempting to update the GUI from within the EDT, most probably.
<http://www.physci.org/guifaq.jsp#2.1>
<http://www.physci.org/guifaq.jsp#2.2>

HTH