SimpleFileChooser.java Source code

Introduction

Here is the source code for SimpleFileChooser.java

Source

/*
Java Swing, 2nd Edition
By Marc Loy, Robert Eckstein, Dave Wood, James Elliott, Brian Cole
ISBN: 0-596-00408-7
Publisher: O'Reilly 
*/
//SimpleFileChooser.java
//A simple file chooser to see what it takes to make one of these work.
//
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;

import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class SimpleFileChooser extends JFrame {

    public SimpleFileChooser() {
        super("File Chooser Test Frame");
        setSize(350, 200);
        setDefaultCloseOperation(EXIT_ON_CLOSE);

        Container c = getContentPane();
        c.setLayout(new FlowLayout());

        JButton openButton = new JButton("Open");
        JButton saveButton = new JButton("Save");
        JButton dirButton = new JButton("Pick Dir");
        final JLabel statusbar = new JLabel("Output of your selection will go here");

        // Create a file chooser that opens up as an Open dialog
        openButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ae) {
                JFileChooser chooser = new JFileChooser();
                chooser.setMultiSelectionEnabled(true);
                int option = chooser.showOpenDialog(SimpleFileChooser.this);
                if (option == JFileChooser.APPROVE_OPTION) {
                    File[] sf = chooser.getSelectedFiles();
                    String filelist = "nothing";
                    if (sf.length > 0)
                        filelist = sf[0].getName();
                    for (int i = 1; i < sf.length; i++) {
                        filelist += ", " + sf[i].getName();
                    }
                    statusbar.setText("You chose " + filelist);
                } else {
                    statusbar.setText("You canceled.");
                }
            }
        });

        // Create a file chooser that opens up as a Save dialog
        saveButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ae) {
                JFileChooser chooser = new JFileChooser();
                int option = chooser.showSaveDialog(SimpleFileChooser.this);
                if (option == JFileChooser.APPROVE_OPTION) {
                    statusbar.setText("You saved "
                            + ((chooser.getSelectedFile() != null) ? chooser.getSelectedFile().getName()
                                    : "nothing"));
                } else {
                    statusbar.setText("You canceled.");
                }
            }
        });

        // Create a file chooser that allows you to pick a directory
        // rather than a file
        dirButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ae) {
                JFileChooser chooser = new JFileChooser();
                chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
                int option = chooser.showOpenDialog(SimpleFileChooser.this);
                if (option == JFileChooser.APPROVE_OPTION) {
                    statusbar.setText("You opened "
                            + ((chooser.getSelectedFile() != null) ? chooser.getSelectedFile().getName()
                                    : "nothing"));
                } else {
                    statusbar.setText("You canceled.");
                }
            }
        });

        c.add(openButton);
        c.add(saveButton);
        c.add(dirButton);
        c.add(statusbar);
    }

    public static void main(String args[]) {
        SimpleFileChooser sfc = new SimpleFileChooser();
        sfc.setVisible(true);
    }
}