creating a frame on button click event

[ankit1801]

i hav wriiten a program in whch certain data is displayed on a text field on a button click event. now i hav been asked to remove the textfield and instead of that, display same data in another frame which should appear when the button is clicked. how do i do that??????

[mr_guy]

You can create a new JFrame and add the textfield or a label with the data to that

JFrame frame = new JFrame();
frame.setVisible(isVisible);
frame.setSize(width, height);
frame.add(component);

or use a message dialog

JOptionPane.showMessageDialog(parentComponent, message, title, typeOfMessage);
JOptionPane.showMessageDialog(parentComponent, message);

[DarrylBurke]

Bad advice.

1. No need to add a component after, instead of before, making the top level window visible. And if done, requires revalidation of the component hierarchy.

2. pack is preferred to setSize unless otherwise mandated by the requirement.

db

[sanjeevtarar]

Agreed with you db.

[ankit1801]

hey thnx but i am a bit confused about in which part shld i write the code for the 2nd frame. before the class in which i hav written the code for 1st frame, or create a subclass in the same class or shld i write it aftr that class???

[Fubarable]

Please avoid non-standard abbreviations in your posts as you're making it hard to read. Can you elaborate on your current problem a bit and use standard English in the reply? Also, why are you using multiple JFrames rather than either dialogs or swapping views via a CardLayout?

[Fubarable]

Please see private message. Thanks.

[ankit1801]

sorry for the use of non-standard abbrevations. i am new here. Posting the same again with correction. will be carefull later

i am pasting my code. the output is seen in a TextField. i am asked to remove the textfield and show the output in a new frame which should appear when user presses the VIEW button. i am unable to do so. Please help
CODE:

import javax.swing.*;
import java.util.*;
import java.awt.event.*;
import java.io.*;
import java.util.regex.*;
import javax.swing.filechooser.FileFilter;
import javax.swing.JFileChooser;

class Reaction
{
	String reaction_id;
	ArrayList reactants = new ArrayList();								// creating array list to store reactants and products
	ArrayList products = new ArrayList();
	ArrayList modifiers = new ArrayList();

	public void setReactionID(String reaction_id){
		this.reaction_id = reaction_id;
	}
	public void addModifier(String modifier){
		modifiers.add(modifier);
	}
	public void addReactant(String reactant) {
		reactants.add(reactant);
	}

	public void addProduct(String product) {
		products.add(product);
	}

	@Override public String toString(){							//to store information about  reaction

		String to_return;
		to_return = "\n\nReaction ID: " + reaction_id + "\n\n";

		System.out.println("Reaction ID: " + reaction_id);
		//display all reactants of the reaction
		for(int i = reactants.size(); i > 0; i--) {
			to_return = to_return + "\tReactant: "+ (String)reactants.get(i-1) + "\n";
			System.out.println("Reactant: "+ (String)reactants.get(i-1));
		}
		//display modifiers
		for(int i=modifiers.size();i>0;i--){
			to_return = to_return + "\tModifier: " + (String)modifiers.get(i-1) + "\n";
			System.out.println("Modifier : " + (String)modifiers.get(i-1));
		}

		//display all products of reaction
		for(int i = products.size(); i > 0; i--) {
			to_return = to_return + "\tProduct: " + (String)products.get(i-1) + "\n";
			System.out.println("Product: " + (String)products.get(i-1));
		}

		return to_return;
	}
}
public class Test extends JFrame						//creation of interface
{
	JPanel panel = new JPanel();
	JPanel panel2 = new JPanel();
	JButton view = new JButton("View");
	JTextField filepath = new JTextField(20);
	JButton browse = new JButton("Browse");
	JTextArea textarea = new JTextArea(80,80);
	JScrollPane scrollpane = new JScrollPane(textarea);
	BufferedReader br;
	ArrayList reactions;
	JFileChooser filechooser;

	public Test() {										//constructor of class test
		super("Project");
		panel.add(browse);
		panel.add(filepath);
		panel.add(view);
		panel.add(scrollpane);

		//add events for browse button
		browse.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent ae)
			{
				filechooser = new JFileChooser();					//adding file chooser
				filechooser.showOpenDialog(new JFrame());
				filepath.setText(filechooser.getSelectedFile().getAbsolutePath());
				String f_name=filechooser.getSelectedFile().getAbsolutePath();
				File file = new File(f_name);
				filechooser.addChoosableFileFilter(new TextFilter());


			}


		});

		view.addActionListener(new ActionListener(){	//add events for view button
			public void actionPerformed(ActionEvent ae)
			{
				processData();
				displayData();
			}
		});



		getContentPane().add(panel);
		//getContentPane().add(panel2);
		pack();
		setVisible(true);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

	}

	public void displayData(){
		for(int i = reactions.size(); i >0; i--)
			textarea.append(reactions.get(i-1) + "");

	}

	public void processData(){					//pattern matching
		try{
			Reaction reaction = new Reaction();
			reactions = new ArrayList();

			br = new BufferedReader(new FileReader(new File(filepath.getText())));

			Pattern p_reaction_start = Pattern.compile("<reaction");
			Pattern p_reaction_end = Pattern.compile("</reaction>");
			Pattern p_reactant_start = Pattern.compile("<listOfReactants>");
			Pattern p_reactant_end = Pattern.compile("</listOfReactants>");
			Pattern p_product_start = Pattern.compile("<listOfProducts>");
			Pattern p_product_end = Pattern.compile("</listOfProducts>");
			Pattern p_species = Pattern.compile("<speciesReference");
			Pattern p_mod = Pattern.compile("<modifierSpeciesReference");
			Pattern p_modifier_start = Pattern.compile("<listOfModifiers>");
			Pattern p_modifier_end = Pattern.compile("</listOfModifiers>");

			int first_occurance = 0, next_occurance = 0, flag_reactant = 0, flag_modifier = 0, flag_product = 0;
			Matcher matcher;
			String line;
			while((line = br.readLine()) != null) {

				matcher = p_reaction_start.matcher(line);
				if(matcher.find()){
					System.out.println(line);
					first_occurance = line.indexOf('"');
					next_occurance = line.indexOf('"', first_occurance + 1);
					reaction.setReactionID(line.substring(first_occurance + 1, next_occurance));
				}

				matcher = p_reactant_start.matcher(line);
				if(matcher.find()) {
					flag_reactant = 1;
				}

				matcher = p_reactant_end.matcher(line);
				if(matcher.find()) {
					flag_reactant = 0;
				}
				matcher = p_modifier_start.matcher(line);
				if(matcher.find()) {
					flag_modifier = 1;
				}
				matcher = p_modifier_end.matcher(line);
				if(matcher.find()) {
					flag_modifier = 0;
				}

				matcher = p_product_start.matcher(line);
				if(matcher.find()) {
					flag_product = 1;
				}

				matcher = p_product_end.matcher(line);
				if(matcher.find()) {
					flag_product = 0;
				}
				matcher = p_mod.matcher(line);
				if(matcher.find() && (flag_modifier == 1))
				{
					first_occurance = line.indexOf('"');
					next_occurance = line.indexOf('"', first_occurance + 1);
					Pattern pat222 = Pattern.compile("\"");
					String temp2 = line.substring(first_occurance , next_occurance);
					String strs1[]= pat222.split(temp2);
					String temp3 = strs1[1];
					Matcher mat222 = pat222.matcher(temp2);
					temp2=mat222.replaceAll("");
					Pattern pat333 = Pattern.compile("_");
					Matcher mat333 = pat333.matcher(temp2);
					temp2=mat333.replaceAll("");
					Pattern pat444 = Pattern.compile("space");
					Matcher mat444 = pat444.matcher(temp2);
					temp2=mat444.replaceAll(" ");
					temp2=temp2.trim();
					if(flag_modifier == 1) {
											reaction.addModifier(temp2);
					}
				}


				matcher = p_species.matcher(line);
				if(matcher.find() && (flag_product == 1 || flag_reactant == 1)) {
					System.out.println(next_occurance);
					first_occurance = line.indexOf('"');
					next_occurance = line.indexOf('"', first_occurance + 1);
					String temp1 = line.substring(first_occurance, next_occurance);
					Pattern pat22=Pattern.compile("\"");
					String strs[]=pat22.split(temp1);
					String temp=strs[1];
					Pattern pat33=Pattern.compile("_");
					Matcher mat33=pat33.matcher(temp);
					temp=mat33.replaceAll("");
					Pattern pat44=Pattern.compile("minus");
					Matcher mat44=pat44.matcher(temp);
					temp=mat44.replaceAll("-");
					Pattern pat66=Pattern.compile("plus");
					Matcher mat66=pat66.matcher(temp);
					temp=mat66.replaceAll("+");
					Pattern pat55=Pattern.compile("space");
					Matcher mat55=pat55.matcher(temp);
					temp=mat55.replaceAll(" ");
					temp=temp.trim();
						// differentiating reactants and products
					if(flag_product == 1) {
						reaction.addProduct(temp);
					}

					if(flag_reactant == 1) {
						reaction.addReactant(temp);
					}
				}

				matcher = p_reaction_end.matcher(line);
				if(matcher.find()) {
					reactions.add(reaction);
					reaction = new Reaction();
				}
			}
		}
		catch(Exception e) {
			System.out.println("ERROR!");
		}
	}


	public static void main (String []args)	{
		new Test();
	}
}
class TextFilter extends FileFilter {

				  public boolean accept(File f) {
				    if (f.isDirectory())
				      return true;
				    String s = f.getName();
				    int i = s.lastIndexOf('.');

				    if (i > 0 && i < s.length() - 1)
				      if (s.substring(i + 1).toLowerCase().equals("xml"))
				        return true;

				    return false;
			}
			public String getDescription() {
			    return "Accepts xml files only.";
  }
		}

[Fubarable]

I suggest that you create a new JPanel, add your JTextArea into it, and then place this in a JOptionPane.ShowMessageDialog(...) and display it simply this way.