Problem opening an Image with Swing

Question

I write an action listener for the choose class but when I try to open an image into my Jpanel I have the following error: (The problem seems to be the Null pointer because the image was not read or.....)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at Genim$choose.actionPerformed(Genim.java:219)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
THE CODE IS :
public class choose implements ActionListener {
public void actionPerformed(ActionEvent ae) {
int option = chooser.showOpenDialog(Genim.this);
double [][] F = new double[90000][5];
int i=0;
if (option == JFileChooser.APPROVE_OPTION) {
try{
BufferedReader in = new BufferedReader(new FileReader(chooser.getSelectedFile())); //file contenente i
String getname= chooser.getSelectedFile().getName();
while (true)
String s = in.readLine();
if(s==null){
break;
StringTokenizer t = new StringTokenizer(s,"\t");
double uno = Double.parseDouble(t.nextToken());
double due = Double.parseDouble(t.nextToken());
double tre = Double.parseDouble(t.nextToken());
double quattro = Double.parseDouble(t.nextToken());
double cinque = Double.parseDouble(t.nextToken());
F[0]=uno;
F[i][1]=due;
F[i][2]=tre;
F[i][3]=quattro;
F[i][4]=cinque;
if(i<90000) i=i+1;
if(i==89999) accButton.setText("FIRST YEAR ACQUIRED");
in.close();
input8=F;
input10=getname.substring(0, 4) ;
catch (Exception e)
accButton.setText("File input error");
Image image = null;
try {
// Read from a file
File file = new File(input10+".jpeg");
image = ImageIO.read(file);
} catch (IOException e) {}
image = image.getScaledInstance(200,200,image.SCALE_FAST);
JLabel label = new JLabel(new ImageIcon(image));
buttonPanel.add(label, BorderLayout.EAST); ---->ERROR !!!!
contentPane.add(label);-------------------------------->ERROR!!!!!
Message was edited by:
princo

Answer 1

I will try to be clear:
I want to open a file with the class choose and I want also in the same class to load an image with the command ImageIo.read()., to resize it and then to add this image as an icon into the Jpanel.
I don't know why I receive the error in the final part ( LINE 223 and 224 are shown below) of the class choose:
buttonPanel.add(label, BorderLayout.EAST); ---->ERROR !!!!
contentPane.add(label);-------------------------------->ERROR!!!!!
maybe the image is not fully loaded..
I think that davedes has understood my problem but the modify that he proposed doesn't work---> The same error.
The class choose is :
public class choose implements ActionListener {
    public void actionPerformed(ActionEvent ae) {
    int option = chooser.showOpenDialog(Genim.this);
     double [][] F = new double[90000][5];
     int i=0;
      if (option == JFileChooser.APPROVE_OPTION) {
        try{
          BufferedReader in = new BufferedReader(new FileReader(chooser.getSelectedFile())); //file contenente i
          String getname= chooser.getSelectedFile().getName();       
          while (true)
            String s = in.readLine();
           if(s==null){
             break;
           StringTokenizer t = new StringTokenizer(s,"\t");
           double uno = Double.parseDouble(t.nextToken());
           double due = Double.parseDouble(t.nextToken());
           double tre = Double.parseDouble(t.nextToken());
           double quattro = Double.parseDouble(t.nextToken());
           double cinque = Double.parseDouble(t.nextToken());
           F[0]=uno;
F[i][1]=due;
F[i][2]=tre;
F[i][3]=quattro;
F[i][4]=cinque;
if(i<90000) i=i+1;
if(i==89999) accButton.setText("FIRST YEAR ACQUIRED");
in.close();
input8=F;
input10=getname.substring(0, 4) ;
catch (Exception e)
accButton.setText("File input error");
Image image = null;
try {
// Read from a file
File file = new File("2001.jpeg");
image = ImageIO.read(file);
} catch (IOException e)
{//e.printStackTrace(System.out);
//System.err.println(e.getMessage());
System.exit(1);
image = image.getScaledInstance(200,200,image.SCALE_FAST);
JLabel label = new JLabel(new ImageIcon(image));
buttonPanel.add(label, BorderLayout.EAST);
contentPane.add(label);
The error is:
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
        at Genim$choose.actionPerformed(Genim.java:223)
        at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
        at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
        at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
        at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
        at java.awt.Component.processMouseEvent(Unknown Source)
        at javax.swing.JComponent.processMouseEvent(Unknown Source)
        at java.awt.Component.processEvent(Unknown Source)
        at java.awt.Container.processEvent(Unknown Source)
        at java.awt.Component.dispatchEventImpl(Unknown Source)
        at java.awt.Container.dispatchEventImpl(Unknown Source)
        at java.awt.Component.dispatchEvent(Unknown Source)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
        at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
        at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
        at java.awt.Container.dispatchEventImpl(Unknown Source)
        at java.awt.Window.dispatchEventImpl(Unknown Source)
        at java.awt.Component.dispatchEvent(Unknown Source)
        at java.awt.EventQueue.dispatchEvent(Unknown Source)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.run(Unknown Source)THANK YOU VERY MUCH FOR YOUR HELP
Message was edited by:
princo