How to get the content of text file to write in JTextArea?

[realahmed8]

Hello,
I have text area and File chooser..
i wanna the content of choosed file to be written into text area..

I have this code:

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;
import javax.swing.*;
 
public class Test_Stemmer extends JFrame {
 
public Test_Stemmer() {
 super("Arabic Stemmer..");
 setSize(350, 470);
 setDefaultCloseOperation(EXIT_ON_CLOSE);
 setResizable(false);
 Container c = getContentPane();
 c.setLayout(new FlowLayout());
 
 JButton openButton = new JButton("Open");
 JButton saveButton = new JButton("Save");
 JButton dirButton = new JButton("Pick Dir");
 JTextArea ta=new JTextArea("File will be written here", 10, 25);
 JTextArea ta2=new JTextArea("Stemmed File will be written here", 10, 25);
 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(Test_Stemmer.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(Test_Stemmer.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(Test_Stemmer.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);
 c.add(ta);
 c.add(ta2);
}
 
public static void main(String args[]) {
 Test_Stemmer sfc = new Test_Stemmer();
 sfc.setVisible(true);
}
}

could you please help me, and tell me what to add or to modify,,

Thank you..

[DonCash]

How about this:

import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
 
import javax.swing.*;
 
public class Test_Stemmer extends JFrame {
 
public Test_Stemmer() {
 super("Arabic Stemmer..");
 setSize(350, 470);
 setDefaultCloseOperation(EXIT_ON_CLOSE);
 setResizable(false);
 Container c = getContentPane();
 c.setLayout(new FlowLayout());
 
 JButton openButton = new JButton("Open");
 JButton saveButton = new JButton("Save");
 JButton dirButton = new JButton("Pick Dir");
 final JTextArea ta=new JTextArea(10, 25);
 JTextArea ta2=new JTextArea("Stemmed File will be written here", 10, 25);
 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(Test_Stemmer.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);
       
		// Read in data file to JTextArea
       	try{
       	String strLine;
		File selectedFile = chooser.getSelectedFile();
       	FileInputStream in = new FileInputStream(selectedFile);
		BufferedReader br = new BufferedReader(new InputStreamReader(in));
		while ((strLine = br.readLine()) != null) {
			ta.append(strLine + "\n");
		}
       	}catch(Exception e){
    	   System.out.println("Ouch, I fell over! " + e);
       	}
       
     }
     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(Test_Stemmer.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(Test_Stemmer.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);
 c.add(ta);
 c.add(ta2);
}
 
public static void main(String args[]) {
 Test_Stemmer sfc = new Test_Stemmer();
 sfc.setVisible(true);
}
}

You might want to think about adding scrollbars to your JTextArea using JTextPane. Suppose it will be OK for short files but once they go outside of the JTextArea boundaries, you cant read the text. Scrollbars will solve this.

[realahmed8]

thanks..
but i still wanna know how to put the content of the text file to the text area..

[DonCash]

Try that code I just posted!

That puts the content of the text file into the JTextArea.

[Eku]

You can create a loop until end of file. where in you must get each line of the File and Append it to the JTextArea + "\n" for carriage return. =)

[DonCash]

You can create a loop until end of file. where in you must get each line of the File and Append it to the JTextArea + "\n" for carriage return. =)

Thats exactly what I did above. Try running the code in post #2!

This is what I added:

	// Read in data file to JTextArea
       	try{
       	String strLine;
		File selectedFile = chooser.getSelectedFile();
       	FileInputStream in = new FileInputStream(selectedFile);
		BufferedReader br = new BufferedReader(new InputStreamReader(in));
		while ((strLine = br.readLine()) != null) {
			ta.append(strLine + "\n");
		}
       	}catch(Exception e){
    	   System.out.println("Ouch, I fell over! " + e);
       	}

[realahmed8]

Thats exactly what I did above. Try running the code in post #2!

This is what I added:

	// Read in data file to JTextArea
       	try{
       	String strLine;
		File selectedFile = chooser.getSelectedFile();
       	FileInputStream in = new FileInputStream(selectedFile);
		BufferedReader br = new BufferedReader(new InputStreamReader(in));
		while ((strLine = br.readLine()) != null) {
			ta.append(strLine + "\n");
		}
       	}catch(Exception e){
    	   System.out.println("Ouch, I fell over! " + e);
       	}

thank you very much for your help..
i didn't notice that in your first qoute..
its work fine..
i have tried ScrollBars but also have problems, and also tried ScrollPane but still have problems..
that's the code i have added:

          JScrollPane scrollPane2 = new JScrollPane ( ta2 );
            scrollPane2.setVerticalScrollBarPolicy ( JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);
            scrollPane2.setHorizontalScrollBarPolicy ( JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED );
            scrollPane2.setBorder ( BorderFactory.createLoweredBevelBorder ( ) );
          add ( scrollPane2);

sorry for disturb, but could you help me in this..

thank you very much..

[DonCash]

Sorted:

import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
 
import javax.swing.*;
 
public class Test_Stemmer extends JFrame {
 
public Test_Stemmer() {
 super("Arabic Stemmer..");
 setSize(350, 470);
 setDefaultCloseOperation(EXIT_ON_CLOSE);
 setResizable(false);
 Container c = getContentPane();
 c.setLayout(new FlowLayout());
 
 JButton openButton = new JButton("Open");
 JButton saveButton = new JButton("Save");
 JButton dirButton = new JButton("Pick Dir");
 final JTextArea ta=new JTextArea(10, 25);
 JTextArea ta2=new JTextArea("Stemmed File will be written here", 10, 25);
 final JLabel statusbar = 
              new JLabel("Output of your selection will go here");
 
 JScrollPane scrollText = new JScrollPane(ta);

 
 // 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(Test_Stemmer.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);
       
		// Read in data file to JTextArea
       	try{
       	String strLine;
		File selectedFile = chooser.getSelectedFile();
       	FileInputStream in = new FileInputStream(selectedFile);
		BufferedReader br = new BufferedReader(new InputStreamReader(in));
		while ((strLine = br.readLine()) != null) {
			ta.append(strLine + "\n");
		}
       	}catch(Exception e){
    	   System.out.println("Ouch, I fell over! " + e);
       	}
       
     }
     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(Test_Stemmer.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(Test_Stemmer.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);
 //c.add(ta);
 c.add(scrollText);
 c.add(ta2);
}
 
public static void main(String args[]) {
 Test_Stemmer sfc = new Test_Stemmer();
 sfc.setVisible(true);
}
}

[realahmed8]

thank you very much DonCash, you helped me alot..
and thank you for the helpful tutorials links..

[DonCash]

No problem. Glad I could help...

[fahdouch]

how can i start writing in a jtextarea from the right to left.
tanks in advance ^^