Firstly open file through open menuitem but when second time open i choose the same file it opened in new tab. my requirement it not opened in new tab and display the message file already exist.
Here is my code,
public class Open extends javax.swing.JFrame {
JTextArea tx;
int i=0;
public Open() {
initComponents();
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
tp = new javax.swing.JTabbedPane();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
Open = new javax.swing.JMenuItem();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jMenu1.setText("File");
Open.setText("Open");
Open.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
OpenActionPerformed(evt);
}
});
jMenu1.add(Open);
jMenuBar1.add(jMenu1);
setJMenuBar(jMenuBar1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(tp, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 400, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(tp, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 279, Short.MAX_VALUE)
);
pack();
}// </editor-fold>
private void OpenActionPerformed(java.awt.event.ActionEvent evt) {
final JFileChooser jc = new JFileChooser();
JComponent panel = new JPanel((LayoutManager) new FlowLayout(
FlowLayout.LEFT));
int returnVal= jc.showOpenDialog(Open.this);
String title;
String sts;
File file=null;
if(returnVal == JFileChooser.APPROVE_OPTION)
file = jc.getSelectedFile();
JTextArea text = new JTextArea();
if (jc.getSelectedFile()!= null) {
tx = new JTextArea();
BufferedReader br = null;
StringBuffer str = new StringBuffer("");
StringBuffer st = new StringBuffer("");
try {
br = new BufferedReader(new FileReader(file));
String line;
while ((line = br.readLine()) != null) {
str.append(line + "\n");
}
}
catch (IOException ex) {
Logger.getLogger(Open.class.getName()).log(Level.SEVERE, null, ex);
}
String t = str.toString();
// tx = new JTextArea();
final JInternalFrame internalFrame = new JInternalFrame("",true,true);
title=file.getName();
sts=file.getPath();
tx.setFont(new java.awt.Font("Miriam Fixed", 0, 13));
//tx.setLineWrap(true);
internalFrame.add(tx);
i+=1;
internalFrame.setName("Doc "+i);
JScrollPane scrollpane=new JScrollPane(tx);
internalFrame.setTitle(title);
tp.add(internalFrame);
try{
tp.setSelectedIndex(i-1);
}
catch(IndexOutOfBoundsException ioe){
}
internalFrame.add(scrollpane);
internalFrame.setVisible(true);
internalFrame.addInternalFrameListener(new InternalFrameAdapter() {
@Override
public void internalFrameClosing(InternalFrameEvent e) {
tp.remove(internalFrame);
}
});
tx.setText(t);
try {
br.close();
}
catch (IOException ex) {
Logger.getLogger(Open.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
try {
UIManager.setLookAndFeel(
UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException ex) {
Logger.getLogger(Open.class.getName()).log(Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
Logger.getLogger(Open.class.getName()).log(Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
Logger.getLogger(Open.class.getName()).log(Level.SEVERE, null, ex);
} catch (UnsupportedLookAndFeelException ex) {
Logger.getLogger(Open.class.getName()).log(Level.SEVERE, null, ex);
}
new Open().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JMenuItem Open;
private javax.swing.JMenu jMenu1;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JTabbedPane tp;
// End of variables declaration
}
You can maintain a ArrayList of AbsoluteFilepath , and remove them from list when internalframe is closed . I have updated your code.Please check and reply