JTextArea ArrayList string data and JTextField input data not matching

Question

so I am trying to have my program read a list of lines from a txt file. This is then displayed in a JTextArea. The user can input data using the JTextField and the goal is to display "Hooray" if the user matches the text in the JArea and "Wrong!" if they do not. Any help is appreciated.

public class TextArea1 {

    JTextArea text;
    JFrame frame;
    JTextField textField;
    public int k;
    public ArrayList aList;
    public String correctAnswer;

    public static void main(String[] args) {
        TextArea1 gui = new TextArea1();

        gui.go();
    }

    private String textLine;

    public void go() {
        frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JPanel panel = new JPanel();
        textField = new JTextField("");
        textField.addActionListener(new startTextFieldListener("correct answer"));
        JButton startButton = new JButton("Start!");
        startButton.addActionListener(new startButtonListener(aList));


        text = new JTextArea(30, 60);
        text.setLineWrap(true);

        JScrollPane scroller = new JScrollPane(text);
        scroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
        scroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

        panel.add(scroller);

        frame.getContentPane().add(BorderLayout.CENTER, panel);
        frame.getContentPane().add(BorderLayout.WEST, startButton);
        frame.getContentPane().add(BorderLayout.SOUTH, textField);
        frame.setSize(350, 300);
        frame.setVisible(true);
    }


    class startButtonListener implements ActionListener {
        ArrayList aList;

        startButtonListener(ArrayList passedInList) {
            aList = passedInList;
        }

        @Override
        public void actionPerformed(ActionEvent event) {
            String fileName = "test.txt";
            String line;
            ArrayList aList = new ArrayList();

            try {
                try (BufferedReader input = new BufferedReader(new FileReader(fileName))) {
                    if (!input.ready()) {
                        throw new IOException();

                    }

                    while ((line = input.readLine()) != null) {
                        aList.add(line);
                    }
                }
            } catch (IOException e) {
                System.out.println(e);

            }

            int sz = aList.size();

            for (int k = 0; k < sz; k++) {

                String correctAnswer = aList.get(k).toString();

                text.append(aList.get(k).toString());
                text.append("\n");
            }
        }
    }

    class startTextFieldListener implements ActionListener {
        String correctAnswer;

        startTextFieldListener(String answer) {
            correctAnswer = answer;
        }

        @Override
        public void actionPerformed(ActionEvent event) {
            if (text.getText().equals(correctAnswer)) {
                JOptionPane.showMessageDialog(null, "Hooray!");
            } else {
                JOptionPane.showMessageDialog(null, "Wrong!");
            }

        }
    }
}

Right now, even if I match the text that is displayed on the JArea it does not show the correct messageDIalog — user3100858
– user3100858, Commented Apr 25, 2014 at 5:22
@JakeChasan I thought that it would make sense to show the data from the array in the TextArea and the TextField was used to get input directly from the JFrame without JOptionPane — user3100858
– user3100858, Commented Apr 25, 2014 at 5:27
@DonyorM I'm not exactly sure what you mean. If it checks for it not matching, doesn't that mean that it also checks if it does match? — user3100858
– user3100858, Commented Apr 25, 2014 at 5:28

user3444989 · Accepted Answer · 2014-04-25 06:51:46Z

Ok Try this one:

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;

public class TextArea1{
    JTextArea text;
    JFrame frame;
    JTextField textField;
    public int k;
    public ArrayList aList;
    public String correctAnswer;

    public static void main (String [] args) {
        TextArea1 gui = new TextArea1();

        gui.go();
    }
    private String textLine;

    public void go() {
        frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JPanel panel = new JPanel();
        textField = new JTextField("");
        JButton startButton  = new JButton ("Start!");
        startButton.addActionListener(new startButtonListener());


        text = new JTextArea (30, 60);
        text.setLineWrap(true);

        JScrollPane scroller = new JScrollPane(text);
        scroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
        scroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

        panel.add(scroller);

        frame.getContentPane().add(BorderLayout.CENTER, panel);
        frame.getContentPane().add(BorderLayout.WEST, startButton);
        frame.getContentPane().add(BorderLayout.SOUTH, textField);      
        frame.setSize(350, 300);
        frame.setVisible(true);
    }       

    class startButtonListener implements ActionListener {
     ArrayList aList;
        public void actionPerformed(ActionEvent event) {
            String fileName = "test.txt";
            String line;
            ArrayList <String>aList = new ArrayList<>();

            try {
                 try (BufferedReader input = new BufferedReader (new FileReader(fileName))) {
                     if (!input.ready())   {
                         throw new IOException();

                     }

                     while ((line = input.readLine()) !=null) {
                         aList.add(line);
                     }
                }
            } catch (IOException e) {
                System.out.println(e);

            }
            int sz = aList.size();
            boolean result=false;
            for(String t:aList){ 
            if (t.equalsIgnoreCase(textField.getText())) {
                    JOptionPane.showMessageDialog(null, "Hooray! Loading File contents....");
                    int count=0;
                    for (int k = 0; k< sz; k++) {          
                        text.append(aList.get(k).toString());
                        System.out.println(count);
                        count++;
                        // if(k<sz-1)
                        //  text.append(", ");
                        text.append("\n");
                    }
                    result=true;
                    break;
                 }

                 else {
                    result=false;
                 }
            }
            if(!result){
                JOptionPane.showMessageDialog(null, "Wrong!");
            }
        }
    }       
}

In this it will look for you text enter in textfield and if it matches it will add entire file content line by line. i have already tested. But remember i am not having sufficient time so ,i have not done regex pattern matching it is simple equal comparison with one line in you text file with text entered in textbox exactly.

user3444989 · Accepted Answer · 2014-04-25 05:51:16Z

0

Well, I have just modified your code so that you will get proper message when value in contain in list. look and modify accordingly.

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;

public class TextArea1{

JTextArea text;
JFrame frame;
JTextField textField;
public int k;
public String correctAnswer;

public static void main (String [] args) {
    TextArea1 gui = new TextArea1();

    gui.go();
}
private String textLine;

public void go() {
    frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JPanel panel = new JPanel();
    textField = new JTextField("");
    //textField.addActionListener(new startTextFieldListener("correct answer"));
    JButton startButton  = new JButton ("Start!");
    startButton.addActionListener(new startButtonListener());


    text = new JTextArea (30, 60);
    text.setLineWrap(true);

    JScrollPane scroller = new JScrollPane(text);
    scroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
    scroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

    panel.add(scroller);

    frame.getContentPane().add(BorderLayout.CENTER, panel);
    frame.getContentPane().add(BorderLayout.WEST, startButton);
    frame.getContentPane().add(BorderLayout.SOUTH, textField);      
    frame.setSize(350, 300);
    frame.setVisible(true);
}       



class startButtonListener implements ActionListener {
 ArrayList aList;
 startButtonListener()
 {

 }

public void actionPerformed(ActionEvent event) {
     String fileName = "test.txt";
    String line;
    ArrayList aList = new ArrayList();

    try {
         try (BufferedReader input = new BufferedReader (new FileReader(fileName))) {
             if (!input.ready())   {
                 throw new IOException();

             }

             while ((line = input.readLine()) !=null) {
                 aList.add(line);
             }
             System.out.println("List ready to check. values in list are :"+aList);
         }
    } catch (IOException e) {
        System.out.println(e);

    }
        if (aList.contains(text.getText())) {
            JOptionPane.showMessageDialog(null, "Hooray!");
         }

         else {
            JOptionPane.showMessageDialog(null, "Wrong!");
         }          
    }
}       
}

if this is correct then mark it as correct.

answered Apr 25, 2014 at 5:51

user3444989

7 Comments

user3100858 Over a year ago

Thank you for the input. I tried running your code but whenever I pressed the start button it would display "hooray" instead of loading the txt file data into the JTextArea.

user3444989 Over a year ago

actually i have leave that code for you. if you want i can do for you. but i'll suggest you to do yourself. so you will came to know how it is working.

user3100858 Over a year ago

I would be very grateful if you could do it for me. This is for a school project due in today but I will try my best to understand why it worked.

user3444989 Over a year ago

Ok Tell me you want to load onlu that word which match or entire file whenever start button click.

user3100858 Over a year ago

I would like it to do it line by line if possible

|

Rod_Algonquin · Accepted Answer · 2014-04-25 06:12:12Z

0

Minor mistake you added a new line each time you append to the textArea.. that why its not comparing due to the extra new line

if you have new line in you file no problem the arrayList has it already when you parse the file so no need to add new line.

solution:

public class TextArea1{

JTextArea text;
JFrame frame;
JTextField textField;
public int k;
public String correctAnswer;

public static void main (String [] args) {
    TextArea1 gui = new TextArea1();

    gui.go();
}
private String textLine;

public void go() {
    frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JPanel panel = new JPanel();
    textField = new JTextField("");
    //textField.addActionListener(new startTextFieldListener("correct answer"));
    JButton startButton  = new JButton ("Start!");
    startButton.addActionListener(new startButtonListener());


    text = new JTextArea (30, 60);
    text.setLineWrap(true);

    JScrollPane scroller = new JScrollPane(text);
    scroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
    scroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

    panel.add(scroller);

    frame.getContentPane().add(BorderLayout.CENTER, panel);
    frame.getContentPane().add(BorderLayout.WEST, startButton);
    frame.getContentPane().add(BorderLayout.SOUTH, textField);      
    frame.setSize(350, 300);
    frame.setVisible(true);
}       



class startButtonListener implements ActionListener {
 ArrayList aList;
 startButtonListener()
 {

 }

public void actionPerformed(ActionEvent event) {
     String fileName = "test.txt";
    String line;
    String string = "";

    try {
         try (BufferedReader input = new BufferedReader (new FileReader(fileName))) {
             if (!input.ready())   {
                 throw new IOException();

             }

             while ((line = input.readLine()) !=null) {
                 string += line;
                 //aList.add(line);
             }
             System.out.println("List ready to check. values in list are :"+aList);
         }
    } catch (IOException e) {
        System.out.println(e);

    }
        if (string.equals(textField.getText())) {

            JOptionPane.showMessageDialog(null, "Hooray!");
         }

         else {
            JOptionPane.showMessageDialog(null, "Wrong!");
         }          
    }
}       
}

edited Apr 25, 2014 at 6:12

answered Apr 25, 2014 at 5:50

Rod_Algonquin

26.2k7 gold badges54 silver badges63 bronze badges

6 Comments

user3100858 Over a year ago

I did already try that but it did not work. Ty for the input regardless.

Rod_Algonquin Over a year ago

@user3100858 you want to compare the file and textfield right may i know what is inside the file so I can test it

user3100858 Over a year ago

yep, that is right. This is what is inside the txt file: So what does your brain do with all the routine, ordinary, normal things you encounter?

Rod_Algonquin Over a year ago

you want to just compare a word right if that word exist in that string or you want to whole string compared?

user3100858 Over a year ago

I wish to check if the whole string matches

|

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