Error Cannot Find Symbol Actionlistener
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Cannot Find Symbol Class Actionlistener
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you, helping each other. Join them; it only takes a minute: Sign up cannot finds symbol action listener up vote 2 down vote favorite i am doing a browse file class by using JFileChooser. i meet a problem when compile. it keep told me than cannot find symbol actionlistener. below is my code: import java.util.*; import java.io.*;
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import javax.swing.*; import java.awt.*; import java.text.*; import javax.swing.filechooser.*; public class BrowseForFile { private JTextField txtFileName; private JFrame layout; public BrowseForFile() { super(); initialize(); } public void initialize() { //empty layout layout = new JFrame(); layout.setTitle("Task Synchronization "); layout.setBounds(100, 100, 800, 600); layout.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); layout.getContentPane().setLayout(null); //set the copyright JLabel lblNewLabel_5 = new JLabel("(c) 2012 All Rights Reserved"); lblNewLabel_5.setForeground(Color.GRAY); lblNewLabel_5.setFont(new Font("Tahoma", Font.PLAIN, 10)); lblNewLabel_5.setHorizontalAlignment(SwingConstants.RIGHT); lblNewLabel_5.setBounds(527, 548, 255, 14); layout.getContentPane().add(lblNewLabel_5); //set the label JLabel lblSendAFile = new JLabel("Select a file to be sent to all nodes"); lblSendAFile.setBounds(404, 400, 378, 14); layout.getContentPane().add(lblSendAFile); //set the textfield txtFileName = new JTextField(); txtFileName.setBounds(404, 425, 277, 20); layout.getContentPane().add(txtFileName); txtFileName.setColumns(10); //set the browse button and let it to choose file after click. JButton btnBrowse = new JButton("Browse"); btnBrowse.setBounds(691, 424, 91, 23); layout.getContentPane().add(btnBrowse); btnBrowse.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { JFileChooser chooser = new JFileChooser(); chooser.setCurrentDirectory(new File(dirName)); chooser.setFileSelectionMode(JFileChooser.FILES_ONLY); FileNameExtensionFilter filter = new FileNameExtensionFilter(".txt only", "txt"); chooser.setFileFilter(filter); try { int code = chooser.showOpenDialog(null); if (code == JFileChooser.APPROVE_OPTION) { File selectedFile = chooser.getSelectedFile(); Scanner input = new Scanner(selectedFile); String f=selectedFile.getNam
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this site About Us Learn more about Stack Overflow the company Business Learn more about hiring error cannot find symbol in java developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is http://stackoverflow.com/questions/13699003/cannot-finds-symbol-action-listener a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up ActionEvent “Cannot Find Symbol” up vote -1 down vote favorite I am making a program to wrap text, by words or by characters, depending on user input. I have everything working, except http://stackoverflow.com/questions/14994688/actionevent-cannot-find-symbol for my ActionEvent that's giving me a "Cannot Find Symbol" error. I'm sure it's something small that I've missed, but I can't seem to find it: import javax.swing.*; import java.awt.*; import javax.swing.border.*; public class JTextWrap extends JFrame { JScrollPane scroll = new JScrollPane(); JPanel panel = new JPanel(); JTextArea jta = new JTextArea(); TitledBorder tb; JRadioButton jrb = new JRadioButton(); JRadioButton jrb2 = new JRadioButton(); ButtonGroup btg = new ButtonGroup(); JCheckBox jdb = new JCheckBox(); public JTextWrap() { tb = new TitledBorder(""); setSize(new Dimension(400, 300)); jta.setText("jTextArea1"); panel.setBorder(tb); tb.setTitle("Wrap Options"); jrb.setText("Wrap Words"); jrb.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { JTextWrap.jrb_actionPerformed(e); } }); jrb2.setText("Wrap Characters"); jrb2.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { JTextWrap.jrb2_actionPerformed(e); } }); jdb.setText("Wrap"); jdb.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { JTextWrap.jdb_actionPerformed(e); } }); add(scroll, "Center"); scroll.getViewport().add(jta, null); add(panel, "South"); panel.add(jdb, null); panel.add(jrb, null); panel.add(jrb2, null); btg.add(jrb); btg.add(jrb2); } public static void main(String[] args) { JTextWrap frame = new JTextWrap(); frame.setTitle("JT
1 New Topic/Question Reply 2 Replies - 13094 Views - Last Post: 15 April 2008 - 08:08 PM Rate Topic: #1 Hank http://www.dreamincode.net/forums/topic/47757-cannot-find-symbol-method-actionlistener/ New D.I.C Head Reputation: 1 Posts: 1 Joined: 31-March 08 cannot find symbol method actionListener Posted 31 March 2008 - 08:39 AM I am writing a program https://ideone.com/mGjCi0 to guess numbers between 1 and 1000 and I am getting error "cannot find symbol" while implementing method actionListener. Any help would be appreciated. // Guess the cannot find number import java.awt.Color; import java.awt.FlowLayout; import java.awt.Graphics; import java.awt.event.ActionListener; import java.awt.event.ActionEvent; import java.util.Random; import javax.swing.JFrame; import javax.swing.JTextField; import javax.swing.JLabel; import javax.swing.JButton; public class GuessGame extends JFrame { private static Random generator = new Random(); private int numSelect; // numSelect chosen by application private int guessCount; // number of guesses private int previousDistance; // distance between cannot find symbol last guess and number private int currentDistance; // distance between last guess and number private JTextField guessInputJTextField; // for guessing private JLabel prompt1JLabel; // first prompt to user private JLabel prompt2JLabel; // second prompt to user private JLabel messageJLabel; // displays message of game status private JButton playGameButton; // creates new game private Color background; // background color of application // set up GUI and initialize values public GuessGame() { super( "My Guessing Game" ); /* Write a line of code that calls the superclass constructor and sets the title /* of this application to "Guessing Game" */ guessCount = 0; // initialize number of guesses to 0 background = Color.LIGHT_GRAY; // set background to light gray setLayout( new FlowLayout() ); // create FlowLayout prompt1JLabel = new JLabel( "I have a number between 1 and 1000." ); // describe game add( prompt1JLabel ); // add prompt2JLabel to JFrame prompt2JLabel = new JLabel( "Can you guess my number? Enter your Guess:" );
UseBalloon extends Jframe implements ActionListener { private JButton growButton, moveButton; private JPanel panel; private Ballon ballon; private static void main (String[] args) { UseBallon demo = new UseBalloon(); demo.setSize(200, 200); demo.createGUI(); demo.setVisible(true); } private void createGUI() { setDefaultCloseOperation(EXIT_ON_CLOSE); Container window = getContentPane(); window.setLayout (new FlowLayout()); panel = new JPanel(); panel.setPreferredSize(new Dimension(150, 150)); panel.setBackground(Color.white); window.add(panel); moveButton = new JButton("move"); window.add(moveButton); moveButton.addActionListener(this); growButton = new JButton("grow"); window.add(growButton); growButton.addActionListener(this); balloon = new Balloon(); } public void actionPerformed(ActionEvent event) { Graphics paper = panel.getGraphics(); if (event.getSource() == movebutton) { balloon.moveRight(20); } else{ balloon.moveRight(20); } paper.setColor(Color.white); paper.fillRect(0, 0, 150, 150); balloon.display(paper); }} 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