Java JFileChooser

**D_chapple** · 08-02-2010

Hello, I am learning java programming and now I want to know the details about the Java JFileChooser and I am not able to get it. I have check it on internet, but it is not understandable for me. So, if anyone is having details about it then please reply me about it, So I can achieve knowledge about it. So, please help me to achieve it.

**Zecho** · 08-02-2010

Hello, If you want to show the file chooser then you must need to make use of the method given below:

Code:

   obj = filechoser.showOpenDialog(owner); 
   obj = filechoser.showSaveDialog(owner); 
   obj = filechoser.showDialog(owner, title);

Here, you must use the owner in place of the component. It may possible to make use of the null value for the owner value.

**Reegan** · 08-02-2010

Hello, I think you need to make use of the code below for getting knowledge about the Java JFilechoser. So, make use of it.

Code:

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing .*;
import java.awt .*;
import java.awt .*;
import java.io. *;
 
     Public class FileChooser extends JFrame implements ActionListener{
    
     private JButton b1 = new JButton("Select a file"); 
     private JTextField t1 = new JTextField("No file loaded!");
     private JPanel panel = new JPanel();
     
     Public FileChooser() 
{
 
     this.setTitle("JFileChooser");
     this.setSize(500, 100);
     this.setLocationRelativeTo(null);

     t1.setEditable(false);

     b1.addActionListener(this);
     panel.setBackground(Color.CYAN);
     JPanel pane = new JPanel();
     pane.add(t1);
     pane.add(b1);
     panel.add(Pane);
     this.setContentPane(panel);
     this.setVisible(true);
     }
     
      Public void actionPerformed(ActionEvent evt)
 {

     JFileChooser chooser = new JFileChooser();
     chooser.showFileChooserDialog(null); 
     if (chooser.showFileChooserDialog(null) == JFileChooser.APPROVE_OPTION)
	     {
	     t1.setText(chooser.getSelectedFile().getAbsolutePath()); 
	     }
     }
     
 } 


and here is the code that call this class from my applet

	if (evt.getActionCommand().equals("File"))
		{
		FileChooser = new FileChooser();
FileChooser.show();
		}

**MindSpace** · 08-02-2010

Hello, the class JFileChooser provides following methods:

void addActionListener(ActionListener l)
void addChoosableFileFilter(FileFilter filter)
void approveSelection()
void changeToParentDirectory()
void ensureFileIsVisible(File f)
protected void fireActionPerformed(String command)
FileFilter getAcceptAllFileFilter()
ActionListener[] getActionListeners()
int getApproveButtonMnemonic()
String getApproveButtonToolTipText()
FileFilter[] getChoosableFileFilters()
boolean getControlButtonsAreShown()

**opaper** · 08-02-2010

Hello, there is a code for the Java Jfilechooser which I have got from internet. You can make use of it for your purpose.

Code:

import javax.swing.JFileChooser;
import javax.swing.JFrame;

public class test extends JFrame
 {
  public test() 
{
    JFileChooser fchoose = new JFileChooser();
    fchoose.setDialogTitle("Choose a file");
    this.getContentPane().add(fchoose);
    fchoose.setVisible(true);
  }

  public static void main(String[] args)
 {
    JFrame frm = new test();
    frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frm.pack();
    frm.setVisible(true);
  }

**Modifier** · 08-02-2010

Hello, if you want to make use of the selection of the files then you need to make use of the JFileChooser. It is having following three methods as below: