FileChooserExample.java

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);    
}    
}