🚀 go-pugleaf

Hi John,

For a full explanation of JFileChooser have a look at Sun's Swing Tutorial 
:-

http://java.sun.com/docs/books/tutorial/uiswing/components/filechooser.html

Below is some code which may do what you want. Personally I normally try to 
avoid inner classes, but I knocked up this code to show you that what you 
want to achieve can be done fairly simply. Most of the code is needed as 
Java doesn't provide a convenience method to access a file's extension.

If you look at the bottom of Sun's tutorial you'll see some examples; 
FileChooserDemo2 gives a more complete example

JFileChooser jFileChooser1 = new JFileChooser();
jFileChooser1.setAcceptAllFileFilterUsed(false);
jFileChooser1.addChoosableFileFilter(
        new FileFilter()
            {
              public boolean accept(File f)
              {
                if (f.isDirectory())
                {
                  return true;
                }
                else
                {
                  String fileExtn = null;
                  String fname = f.getName();
                  int i = fname.lastIndexOf('.');

                  if (i > 0)
                  {
                    fileExtn = fname.substring(i + 1).toLowerCase();
                    if (fileExtn.equals("jpg") || fileExtn.equals("gif") || 
fileExtn.equals("odt"))
                    {
                      return true;
                    }
                    else
                    {
                      return false;
                    }

                  }
                  else
                  {
                      return false;
                  }
                }
              }

              public String getDescription()
              {
                return "Images etc";
              }

            }
        );

Arth

"John Hetherington" <janetandjohn@clear.net.nz> wrote in message 
news:4400d65c$1@newsgroups.borland.com...
>
> Hello from New Zealand,
>
> Can anyone help with setting up a simple multiple filter on the Swing 
> FileChooser component, I have used C++ Builder before and it was a matter 
> of using a mask editor, 2 minutes tops.
> I can't get to grips with the same move on JBuilder. Suppose I want to 
> have my File Open dialog display a filter list for the *.odt files , *.jpg 
> and *.gif files. The sun site says I have to create a Filter class, I 
> notice one of the properties of the JFilechooser component is a filter?.
>
> Can anyone give me a leg up on this.
>
>
> Kindest Regards
>
> John Hetherington 

Arthur

Many thanks for your help, I created a myFilter class which had its Base as javax.swing.filechooser.FileFilter and popped your code in. No problems now it works fine. I shall read the sun site material you suggested. All this gives a point to explore with more confidence.

Much appreciated

John in NZ




"Arthur Ore" <nospamthx@nospamthx.co.uk> wrote:
>Hi John,
>
>For a full explanation of JFileChooser have a look at Sun's Swing Tutorial 
>:-
>
>http://java.sun.com/docs/books/tutorial/uiswing/components/filechooser.html
>
>Below is some code which may do what you want. Personally I normally try to 
>avoid inner classes, but I knocked up this code to show you that what you 
>want to achieve can be done fairly simply. Most of the code is needed as 
>Java doesn't provide a convenience method to access a file's extension.
>
>If you look at the bottom of Sun's tutorial you'll see some examples; 
>FileChooserDemo2 gives a more complete example
>
>JFileChooser jFileChooser1 = new JFileChooser();
>jFileChooser1.setAcceptAllFileFilterUsed(false);
>jFileChooser1.addChoosableFileFilter(
>        new FileFilter()
>            {
>              public boolean accept(File f)
>              {
>                if (f.isDirectory())
>                {
>                  return true;
>                }
>                else
>                {
>                  String fileExtn = null;
>                  String fname = f.getName();
>                  int i = fname.lastIndexOf('.');
>
>                  if (i > 0)
>                  {
>                    fileExtn = fname.substring(i + 1).toLowerCase();
>                    if (fileExtn.equals("jpg") || fileExtn.equals("gif") || 
>fileExtn.equals("odt"))
>                    {
>                      return true;
>                    }
>                    else
>                    {
>                      return false;
>                    }
>
>                  }
>                  else
>                  {
>                      return false;
>                  }
>                }
>              }
>
>              public String getDescription()
>              {
>                return "Images etc";
>              }
>
>            }
>        );
>
>Arth
>
>"John Hetherington" <janetandjohn@clear.net.nz> wrote in message 
>news:4400d65c$1@newsgroups.borland.com...
>>
>> Hello from New Zealand,
>>
>> Can anyone help with setting up a simple multiple filter on the Swing 
>> FileChooser component, I have used C++ Builder before and it was a matter 
>> of using a mask editor, 2 minutes tops.
>> I can't get to grips with the same move on JBuilder. Suppose I want to 
>> have my File Open dialog display a filter list for the *.odt files , *.jpg 
>> and *.gif files. The sun site says I have to create a Filter class, I 
>> notice one of the properties of the JFilechooser component is a filter?.
>>
>> Can anyone give me a leg up on this.
>>
>>
>> Kindest Regards
>>
>> John Hetherington 
>
>