Open file using JFileChooser

Complete source code below will show you, how to open file using JFileChooser.

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COMPLETE SOURCE CODE FOR : OpenFileUsingJFileChooser.java
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/*
*Desktop class only can get when you use JDK 6
*/
import java.awt.Desktop;

import javax.swing.JFileChooser;

import java.io.File;

public class OpenFileUsingJFileChooser
{
public static void main(String[]args)
{
 //Create a file chooser
 JFileChooser fileChooser=new JFileChooser();

 //File chooser will appear in no windows parent
 int a=fileChooser.showOpenDialog(null);

 //Action that will take when user click open button
 if(a==JFileChooser.APPROVE_OPTION)
 {
  //Get file that want to open
  File fileToOpen=fileChooser.getSelectedFile();

  try
  {
   //Open file using suitable program on computer.
   //You don't need to tell what program to use.
   //Java will select default program that your
   //computer use to open the file.
   //In windowsXP you can see what
   //program that your computer use to open
   //a file by right click on file,
   //choose properties and see at
   //Opens with : ProgramNameToOpenTheFile
   Desktop.getDesktop().open(fileToOpen);
  }
  catch(Exception exception)
  {
   System.out.println("Problem occour when to open the file");
  }
 }
}
}

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JUST COMPILE AND EXECUTE IT
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Set file type in JFileChooser

Complete source code below will show you, how set file type that should be display in a JFileChooser. Source code below will display all directories and text files only.

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COMPLETE SOURCE CODE FOR : SetJFileChooserFileType.java
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import javax.swing.filechooser.FileFilter;

import javax.swing.JFileChooser;

import java.io.File;

public class SetJFileChooserFileType
{
public SetJFileChooserFileType()
{
 //Create a file chooser from JFileChooser
 JFileChooser fileChooser=new JFileChooser();

 //Set file type that should be display by set JFileChooser's file filter
 fileChooser.setFileFilter(new TypeOfFile());

 //Show JFileChooser
 int a=fileChooser.showDialog(null,"Open Text File");
}

//Class TypeOfFile 
class TypeOfFile extends FileFilter
{
 //Type of file that should be display in JFileChooser will be set here
 //We choose to display only directory and text file
 public boolean accept(File f)
 {
  return f.isDirectory()||f.getName().toLowerCase().endsWith(".txt");
 }

 //Set description for the type of file that should be display
 public String getDescription()
 {
  return ".text files";
 }
}

public static void main(String[]args)
{
 SetJFileChooserFileType sjfcft=new SetJFileChooserFileType();
}
}

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JUST COMPILE AND EXECUTE IT
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Create file chooser using JFileChooser

Source code below will show you, how to create a file chooser in java using JFileChooser class.

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COMPLETE SOURCE CODE FOR : CreateFileChooserUsingJFileChooser.java
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import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JButton;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import java.awt.FlowLayout;

public class CreateFileChooserUsingJFileChooser implements ActionListener
{
//Create file chooser using JFileChooser
JFileChooser fileChooser=new JFileChooser();

//Create a button that use to open file chooser
JButton button=new JButton("Click here to open file chooser");

//Create a JFrame that use to place created button
//JFrame title is ( Create file chooser using JFileChooser )
JFrame frame=new JFrame("Create file chooser using JFileChooser");

public CreateFileChooserUsingJFileChooser()
{
 //add ActionListener to created button
 button.addActionListener(this);

 //set JFrame layout to FlowLayout
 frame.setLayout(new FlowLayout());

 //add button into JFrame
 frame.add(button);

 //set default close operation for JFrame
 //So when you click window close button, this program will exit
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

 //set JFrame size to :
 //WIDTH : 500 pixels
 //HEIGHT : 500 pixels
 frame.setSize(500,500);

 //Make your JFrame visible. So we can see it
 frame.setVisible(true);
}

//Action that will take by button
public void actionPerformed(ActionEvent event)
{
 //When you click the button, a file chooser will appear
 if(event.getSource()==button)
 {
  //Show file chooser with title ( Choose a file )
  fileChooser.showDialog(frame,"Choose a file");
 }
}

public static void main(String[]args)
{
 CreateFileChooserUsingJFileChooser cfcujfc=new CreateFileChooserUsingJFileChooser();
}
}

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JUST COMPILE AND EXECUTE IT
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