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Java JFileChooser

The object of JFileChooser class represents a dialog window from which the user can select file. It inherits JComponent class.

JFileChooser class declaration

Let's see the declaration for javax.swing.JFileChooser class.

Commonly used Constructors:

Constructor	Description
JFileChooser()	Constructs a JFileChooser pointing to the user's default directory.
JFileChooser(File currentDirectory)	Constructs a JFileChooser using the given File as the path.
JFileChooser(String currentDirectoryPath)	Constructs a JFileChooser using the given path.

Java JFileChooser Example

import javax.swing.*;  
import java.awt.event.*;  
import java.io.*;  
public class FileChooserExample extends JFrame implements ActionListener{  
JMenuBar mb;  
JMenu file;  
JMenuItem open;  
JTextArea ta;  
FileChooserExample(){  
open=new JMenuItem("Open File");  
open.addActionListener(this);          
file=new JMenu("File");  
file.add(open);           
mb=new JMenuBar();  
mb.setBounds(0,0,800,20);  
mb.add(file);            
ta=new JTextArea(800,800);  
ta.setBounds(0,20,800,800);            
add(mb);  
add(ta);            
}  
public void actionPerformed(ActionEvent e) {  
if(e.getSource()==open){  
	JFileChooser fc=new JFileChooser();  
	int i=fc.showOpenDialog(this);  
	if(i==JFileChooser.APPROVE_OPTION){  
		File f=fc.getSelectedFile();  
		String filepath=f.getPath();  
		try{
		BufferedReader br=new BufferedReader(new FileReader(filepath));  
		String s1="",s2="";  		              
		while((s1=br.readLine())!=null){  
		s2+=s1+"\n";  
		}  
		ta.setText(s2);  
		br.close();  
		}catch (Exception ex) {ex.printStackTrace();  }               
	}  
}  
}        
public static void main(String[] args) {  
	FileChooserExample om=new FileChooserExample();  
             om.setSize(500,500);  
             om.setLayout(null);  
             om.setVisible(true);  
             om.setDefaultCloseOperation(EXIT_ON_CLOSE);  
}  
}

Output:

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Java JFileChooser

JFileChooser class declaration

Commonly used Constructors:

Java JFileChooser Example

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