Java JFileChooser

by Online Tutorials Library July 14, 2022

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:

Java Jfilechooser 1 Java Jfilechooser 2 Java Jfilechooser 3

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Commonly used Constructors:

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