help with textarea insertion

[neha gautam]

hello all, i m new to swings........
kindly help me insertin a textarea in which i want
to display the String stored in data.. i have problem addin the panel to the frame..
shud i make a new frame object and then add panel to it(frame1) i want my String(here named as data) to be displayed in a GUI window
or can i do it with the frame instance i made it in main method..
kindly correct me if i m wrong any where

thanks to all

import java.awt.BorderLayout;
import java.awt.Dimension;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;

import java.lang.System;
import java.lang.String;

import java.io.*;

import javax.swing.BoxLayout;
import javax.swing.JTextArea;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;

public class UI_new extends JPanel implements ActionListener
{
	private JRadioButton[] files = null;
	private JScrollPane scrollPane;
	private JScrollpane textpane;
	private JPanel radioButtonPanel;
	private JPanel actionPanel;
	private JPanel textpanel;
	private BoxLayout layout;
	private BoxLayout layout1;
	private ButtonGroup group;
	private String file_name_selected;
	private String data;
	private JTextArea ta;
	JFrame frame1;

	public UI_new()
	{
		radioButtonPanel = new JPanel();
		
		layout = new BoxLayout(radioButtonPanel, BoxLayout.Y_AXIS);
		radioButtonPanel.setLayout(layout);
		group = new ButtonGroup();
		
		updateRadioButtonPanel();
		
		scrollPane = new JScrollPane(radioButtonPanel);
		scrollPane.setPreferredSize(new Dimension(400,300));
		
		add(scrollPane, BorderLayout.CENTER);
		
		actionPanel = new JPanel();
		
		add(actionPanel, BorderLayout.SOUTH);
		
		 
		frame1=new JFrame();
		 
		 textpanel=new JPanel();
		layout1 = new BoxLayout(textPanel, BoxLayout.Y_AXIS);
		textpanel.setlayout(layout1);

		ta=new JTextArea(10,30);
		
		textpane=new JScrollpane(ta);
		
		textpane.setPreferredSize(new Dimension(500,500));
		
		frame1.add(textpane,BorderLayout.CENTER);
		frame1.setVisible(true);
`		
	}
	
	public void updateRadioButtonPanel()
	{
		String[] fileNames = DirectoryTest.getFilesInDir("C:\\watri\\files");

		


 
		files = new JRadioButton[fileNames.length];
		for(int i = 0; i < fileNames.length; i++)
		{
			files[i] = new JRadioButton(fileNames[i]);
			group.add(files[i]);
			radioButtonPanel.add(files[i]);
                       
                        //Register a listener for the radio buttons.
                       files[i].addActionListener(this);
		}
		radioButtonPanel.repaint();
	}

	


	public void actionPerformed(ActionEvent e) 
	{
           	file_name_selected= e.getActionCommand();
		    

		
		data=ReadFile.getContents(new File("c:\\watri\\files\\"+file_name_selected));
		
		ta.setText(data);
		//System.out.println(" "+data);
       
 	}


	
	public static void main(String[] args)
	{
		JFrame f = new JFrame();
		
		UI_new ui = new UI_new();
		f.setContentPane(ui);
		f.pack();
		f.setVisible(true);
	}	
}
	

[Maneesh Godbole]

Whats the problem you are facing with your existing code?

[Maneesh Godbole]

When you post some code, please post real code
http://faq.javaranch.com/java/PostRealCode

Your current code is full of typos.
If people find they are spending time fixing your typos, they might be discouraged in helping you.

[neha gautam]

i m really sorry maneesh if you got this type of perception
ill be more careful from now on, kindly pardon me

on clicking the radio button , i shud get the string displayed on the GUI window, but its
not happenin(nothin is happenin), i don know wat i m missin

import java.awt.BorderLayout;
import java.awt.Dimension;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;

import java.lang.System;
import java.lang.String;

import java.io.*;

import javax.swing.BoxLayout;
import javax.swing.JTextArea;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;

public class UI_new extends JPanel implements ActionListener
{
	private JRadioButton[] files = null;
	private JScrollPane scrollPane;
	private JScrollPane textpane;
	private JPanel radioButtonPanel;
	private JPanel actionPanel;
	private JPanel textpanel;
	private BoxLayout layout;
	private BoxLayout layout1;
	private ButtonGroup group;
	private String file_name_selected;
	private String data;
	private JTextArea ta;
	JFrame frame1;

	public UI_new()
	{
		radioButtonPanel = new JPanel();
		
		layout = new BoxLayout(radioButtonPanel, BoxLayout.Y_AXIS);
		radioButtonPanel.setLayout(layout);
		group = new ButtonGroup();
		
		updateRadioButtonPanel();
		
		scrollPane = new JScrollPane(radioButtonPanel);
		scrollPane.setPreferredSize(new Dimension(400,300));
		
		add(scrollPane, BorderLayout.CENTER);
		
		actionPanel = new JPanel();
		
		add(actionPanel, BorderLayout.SOUTH);
		
		 
		frame1=new JFrame();
		 
		 textpanel=new JPanel();
		layout1 = new BoxLayout(textpanel, BoxLayout.Y_AXIS);
		textpanel.setLayout(layout1);

		ta=new JTextArea(10,30);
		
		textpane=new JScrollPane(ta);
		
		textpane.setPreferredSize(new Dimension(500,500));
		
		frame1.add(textpane,BorderLayout.CENTER);
		frame1.setVisible(true);
		
	}
	
	public void updateRadioButtonPanel()
	{
		String[] fileNames = DirectoryTest.getFilesInDir("C:\\watri\\files");

		


 
		files = new JRadioButton[fileNames.length];
		for(int i = 0; i < fileNames.length; i++)
		{
			files[i] = new JRadioButton(fileNames[i]);
			group.add(files[i]);
			radioButtonPanel.add(files[i]);
                       
                        //Register a listener for the radio buttons.
                       files[i].addActionListener(this);
		}
		radioButtonPanel.repaint();
	}

	


	public void actionPerformed(ActionEvent e) 
	{
           	file_name_selected= e.getActionCommand();
		    

		
		data=ReadFile.getContents(new File("c:\\watri\\files\\"+file_name_selected));
		
		ta.setText(data);
		//System.out.println(" "+data);
       
 	}


	
	public static void main(String[] args)
	{
		JFrame f = new JFrame();
		
		UI_new ui = new UI_new();
		f.setContentPane(ui);
		f.pack();
		f.setVisible(true);
	}	
}

[Maneesh Godbole]

I dont really understand why your UI is designed that way but your culprit is this line

frame1 = new JFrame();

or rather, you haven't set any size for this frame instance.
JFrames default to a size of 0,0.

Also this frame instance is being hidden behind your frame which displays the radio buttons.
You also have not set any default close operation. So even when you close the frame instance, the jvm is not terminated.

Heavily recommended reading
http://java.sun.com/docs/books/tutorial/uiswing/components/frame.html

[Gregg Bolinger]

hello all, i m new to swings........

I know this doesn't help much but I have to tell you that Swing is a Proper Noun. Just a minor pet peeve.

Thanks.