Hi friend,

import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.swing.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;

public class DisplayImage extends JFrame {
JLabel promptLabel;
JTextField prompt;
JButton button;
JFileChooser fileChooser;
JComboBox comboBox;
JButton saveButton;
public DisplayImage() {
super("Image Selection program");
setDefaultCloseOperation(EXIT_ON_CLOSE);
Container con = getContentPane();
JPanel inputPanel = new JPanel();
promptLabel = new JLabel("Filename:");
inputPanel.add(promptLabel);
prompt = new JTextField(20);
inputPanel.add(prompt);
button = new JButton("Browse");
inputPanel.add(button);
con.add(inputPanel, BorderLayout.NORTH);

fileChooser = new JFileChooser();
button.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
int returnValue = fileChooser.showOpenDialog(null);
if (returnValue == JFileChooser.APPROVE_OPTION) {
File selectedFile = fileChooser.getSelectedFile();
if (selectedFile != null) {
prompt.setText(selectedFile.getAbsolutePath());
}
}
}
}
);

JPanel outputPanel = new JPanel();
String writerFormats[] = ImageIO.getWriterFormatNames();
ComboBoxModel comboBoxModel = new DefaultComboBoxModel(writerFormats);
comboBox = new JComboBox(comboBoxModel);
outputPanel.add(comboBox);
saveButton = new JButton("Save");
outputPanel.add(saveButton);
saveButton.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
String name = prompt.getText();
File file = new File(name);
if(file.exists()) {
BufferedImage image = ImageIO.read(file.toURL());
if(image == null) {
System.err.println("Invalid input file format");
} else {
String selection = (String)comboBox.getSelectedItem();
String outputFilename = name + "." + selection;
File outputFile = new File(outputFilename);
boolean found = ImageIO.write(image,selection, outputFile);
if (found) {
JDialog window = new JDialog();
Container windowContent = window.getContentPane();
BufferedImage newImage = ImageIO.read(outputFile);
JLabel label = new JLabel(new ImageIcon(newImage));
JScrollPane pane = new JScrollPane(label);
windowContent.add(pane,BorderLayout.CENTER);
window.setSize(500, 500);
window.show();
} else {
System.err.println("Error saving");
}
}
} else {
System.err.println("file name not select!");
}
} catch (MalformedURLException mur) {
System.err.println("Select file name not found");
} catch (IOException ioe) {
System.err.println("Error reading file");
}
}
}
);

con.add(outputPanel, BorderLayout.SOUTH);

}
public static void main(String args[]){
System.out.println("Display image on new window after selecting!");
JFrame frame = new DisplayImage();
frame.setSize(500,300);
frame.show();
}
}
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