CODEWITHSUNDEEP
javafileswingjfilechooser
user2971238
user2971238

Reputation: 85

the button Cancel in JFileChooser still loads a file when clicked

I have a button to choose a file using JFileChooser.

This is my code:

private void buttonFIleBrowserInPanelActionPerformed(java.awt.event.ActionEvent evt) {                                                         
    try {

        JFileChooser chooser = new JFileChooser();
        chooser.setCurrentDirectory(new java.io.File("."));
        chooser.setDialogTitle("Please, choose your main file ... ");

        chooser.setFileFilter(new FileFilter() {

            @Override
            public boolean accept(File f) {
                return f.getName().toLowerCase().endsWith(".java") || f.isDirectory();
            }

            @Override
            public String getDescription() {
                return "Java File (*.java)";
            }
        });
        chooser.setAcceptAllFileFilterUsed(true);
        chooser.showOpenDialog(null); 

        File f = chooser.getCurrentDirectory();
        File ff = chooser.getSelectedFile();
        mainFile = ff;
        if (ff != null) { 
            nameFile = ff.toString();

            File namaFilenya = new File(nameFile);
            try {
                FileReader readFile = new FileReader(namaFilenya);
                String readFileToString = readFile.toString();

                try {
                    txtFile.read(readFile, null); // this is the textArea that show the contains of file
                    txtPathMainFile.setText(nameFile); //this is the textarea that show the path of file

                } catch (IOException ex) {
                    System.out.println(ex);
                }

            } catch (FileNotFoundException ex) {
                System.out.println(ex);

            }

        }
    } catch (Exception e) {
    }
}

When I clicked one of the files in the JFileChooser, and then clicked OK, it's successful to load everything that I need. But, in another case, when I clicked a file, but I decided to choose Cancel, the file is still loading in my textArea. How to solve this problem?

Upvotes: -1

Views: 683

Answers (4)

user2971238
user2971238

Reputation: 85

Thanks for all of the help, this code now work, if I make my code like this

int returnVal = chooser.showOpenDialog(null);
        if (returnVal == JFileChooser.APPROVE_OPTION) {
            File f = chooser.getCurrentDirectory();
            File ff = chooser.getSelectedFile();//
            mainFile = ff;
            if (ff != null) { t
                nameFile = ff.toString();

                File namaFilenya = new File(nameFile);
                try {
                    FileReader readFile = new FileReader(namaFilenya);
                    try {

                        txtFile.read(readFile, null);
                        txtPathMainFile.setText(nameFile);

                    } catch (IOException ex) {
                        System.out.println(ex);
                    }

                } catch (FileNotFoundException ex) {
                    System.out.println(ex);

                }

            }

        }

Thanks..

Upvotes: 0

Roman C
Roman C

Reputation: 1

You should check the value returned by the JFileChooser. See example from my answer 

int rv = chooser.showOpenDialog(null);
if (rv == JFileChooser.APPROVE_OPTION) {
  File file= chooser.getSelectedFile();

Upvotes: 1

Braj
Braj

Reputation: 46881

Check the response of the JFileChooser.

sample code:

int returnVal = chooser.showOpenDialog(parent);
if(returnVal == JFileChooser.APPROVE_OPTION) {
   System.out.println("You chose to open this file: " +
        chooser.getSelectedFile().getName());
   // rest your code goes here
}

You can check for CANCEL_OPTION as well.

For information about using JFileChooser, see How to Use File Choosers, a section in The Java Tutorial.

Upvotes: 4

vermaraj
vermaraj

Reputation: 644

You should check whether the file is selected or not. i.e you must specify some if/else condition in your code.

if(fileSelected){

//load in text Area
}else{
//nothing
}

there should be some boolean value returned by the instance of JFileChooser.

Upvotes: 0

Related Questions