AddActionListener Problem
package REAL;
import java.awt.*;
import java.awt.event.*;
import java.sql.*;
import javax.swing.*;
public class ClientMain extends Frame
private Button ExitB;
ClientMain()
{ addWindowListener(new WindowAdapter()
{ public void windowClosing(WindowEvent e)
System.exit(0);
loadFrame();
setTitle("Client Main");
setBounds(50, 50, 360, 330);
public void actionPerformed(ActionEvent event)
if (event.getSource() == ExitB)
System.exit(0);
private void loadFrame()
ExitB = new Button();
ExitB.setBounds(239, 295, 56, 23);
ExitB.setLabel("Exit");
setLayout(null);
add(ExitB);
ExitB.addActionListener(this);
public static void main(String[] args)
ClientMain testframe = new ClientMain();
testframe.setVisible(true);
}after compiling it gicews this error
REAL/ClientMain.java [43:1] addActionListener(java.awt.event.ActionListener) in java.awt.Button cannot be applied to (REAL.ClientMain)
ExitB.addActionListener(this);
^
1 error
Errors compiling ClientMain.
Add an implements ActionListener:
public class ClientMain extends Frame implements ActionListener
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Second, a static method does not have a this to reference. You should make createAndShowGUI non-static, and create an instance of your class in your static main method. You can then call createAndShowGUI. You do not need to use a Runnable. The event thread will invoke your actionPerformed method.
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import java.awt.BorderLayout;
import java.awt.Cursor;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class BusyFrameTest implements ActionListener
private static Cursor busy = Cursor.getPredefinedCursor (Cursor.WAIT_CURSOR);
private static Cursor done = Cursor.getDefaultCursor();
JFrame frame;
JButton[] buttons;
public BusyFrameTest (String title)
frame = new JFrame (title);
buttons = new JButton[5];
buttons[0] = new JButton ("BUSY");
buttons[1] = new JButton ("DONE");
buttons[2] = new JButton ("SLEEP");
buttons[3] = new JButton ("INVOKE LATER");
buttons[4] = new JButton ("DELAY");
JPanel buttonPanel = new JPanel();
for (int i = 0; i < buttons.length; i++)
buttonPanel.add (buttons);
frame.getContentPane().add (buttonPanel);
frame.pack();
frame.setVisible (true);
public void addListeners (ActionListener listener)
for (int i = 0; i < buttons.length; i++)
buttons[i].addActionListener (listener);
public void actionPerformed (ActionEvent e)
System.out.print (frame.getTitle() + ": " + e.getActionCommand());
if (e.getActionCommand().equals ("BUSY"))
frame.setCursor (busy);
else if (e.getActionCommand().equals ("DONE"))
frame.setCursor (done);
else if (e.getActionCommand().equals ("SLEEP"))
frame.setCursor (busy);
try { Thread.sleep (3000); } catch (Exception ex) { }
frame.setCursor (done);
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try { Thread.sleep (3000); } catch (Exception ex) { }
frame.setCursor (done);
System.out.print (" finished");
System.out.println();
Runnable thread = new Runnable()
public void run()
try { Thread.sleep (3000); } catch (Exception ex) { }
frame.setCursor (done);
System.out.println (" finished");
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f1.addListeners (f1);
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// Copyright (c) 2001
package pack_zip;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import oracle.jdeveloper.layout.*;
import java.io.*;
import java.util.*;
import java.util.zip.*;
import java.text.*;
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* <P>
* @author a
public class fzip extends JFrame implements ActionListener{
JPanel jPanel1 = new JPanel();
XYLayout xYLayout1 = new XYLayout();
JTextField szdir = new JTextField();
JButton btn = new JButton();
JButton bzip = new JButton();
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static final int BUFFER = 2048;
* Constructs a new instance.
public fzip() {
super("Test zip");
try {
jbInit();
catch (Exception e) {
e.printStackTrace();
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private void jbInit() throws Exception {
this.getContentPane().setLayout(xYLayout1);
this.setSize(new Dimension(400, 300));
btn.setText("btn");
btn.setActionCommand("browse");
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btn.setFont(new Font("Dialog", 0, 14));
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bzip.setActionCommand("zipper");
bzip.setLabel("Zipper");
bzip.setFont(new Font("Dialog", 0, 14));
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bzip.addActionListener(this);
bzip.setEnabled(false);
this.getContentPane().add(jPanel1, new XYConstraints(0, 0, -1, -1));
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this.getContentPane().add(btn, new XYConstraints(279, 28, 103, 38));
this.getContentPane().add(bzip, new XYConstraints(128, 71, 103, 38));
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if(e.getActionCommand() == "browse")
FileDialog fd = new FileDialog(this);
fd.setVisible(true);
szdir.setText(fd.getDirectory());
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* Compression
try {
// création d'un flux d'écriture sur fichier
FileOutputStream dest = new FileOutputStream("Test_archive.zip");
// calcul du checksum : Adler32 (plus rapide) ou CRC32
CheckedOutputStream checksum = new CheckedOutputStream(dest, new Adler32());
// création d'un buffer d'écriture
BufferedOutputStream buff = new BufferedOutputStream(checksum);
// création d'un flux d'écriture Zip
ZipOutputStream out = new ZipOutputStream(buff);
// spécification de la méthode de compression
out.setMethod(ZipOutputStream.DEFLATED);
// spécifier la qualité de la compression 0..9
out.setLevel(Deflater.BEST_COMPRESSION);
// buffer temporaire des données à écriture dans le flux de sortie
byte data[] = new byte[BUFFER];
// extraction de la liste des fichiers du répertoire courant
File f = new File(szdir.getText());
String files[] = f.list();
// pour chacun des fichiers de la liste
for (int i=0; i<files.length; i++) {
// en afficher le nom
System.out.println("Adding: "+files);
// création d'un flux de lecture
FileInputStream fi = new FileInputStream(files[i]);
/* // création d'un tampon de lecture sur ce flux
BufferedInputStream buffi = new BufferedInputStream(fi, BUFFER);
// création d'en entrée Zip pour ce fichier
ZipEntry entry = new ZipEntry(files[i]);
// ajout de cette entrée dans le flux d'écriture de l'archive Zip
out.putNextEntry(entry);
// écriture du fichier par paquet de BUFFER octets
// dans le flux d'écriture
int count;
while((count = buffi.read(data, 0, BUFFER)) != -1) {
out.write(data, 0, count);
// Close the current entry
out.closeEntry();
// fermeture du flux de lecture
buffi.close();*/
/* // fermeture du flux d'écriture
out.close();
buff.close();
checksum.close();
dest.close();
System.out.println("checksum: " + checksum.getChecksum().getValue());*/
// traitement de toute exception
catch(Exception ex) {
ex.printStackTrace();
And here is the error stack :
"D:\jdev32\java1.2\jre\bin\javaw.exe" -mx50m -classpath "D:\jdev32\myclasses;D:\jdev32\lib\jdev-rt.zip;D:\jdev32\jdbc\lib\oracle8.1.7\classes12.zip;D:\jdev32\lib\connectionmanager.zip;D:\jdev32\lib\jbcl2.0.zip;D:\jdev32\lib\jgl3.1.0.jar;D:\jdev32\java1.2\jre\lib\rt.jar" pack_zip.czip
Adding: accueil188.cfm
java.io.FileNotFoundException: accueil188.cfm (Le fichier spécifié est introuvable.
void java.io.FileInputStream.open(java.lang.String)
void java.io.FileInputStream.<init>(java.lang.String)
void pack_zip.fzip.actionPerformed(java.awt.event.ActionEvent)
void javax.swing.AbstractButton.fireActionPerformed(java.awt.event.ActionEvent)
void javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(java.awt.event.ActionEvent)
void javax.swing.DefaultButtonModel.fireActionPerformed(java.awt.event.ActionEvent)
void javax.swing.DefaultButtonModel.setPressed(boolean)
void javax.swing.plaf.basic.BasicButtonListener.mouseReleased(java.awt.event.MouseEvent)
void java.awt.Component.processMouseEvent(java.awt.event.MouseEvent)
void java.awt.Component.processEvent(java.awt.AWTEvent)
void java.awt.Container.processEvent(java.awt.AWTEvent)
void java.awt.Component.dispatchEventImpl(java.awt.AWTEvent)
void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent)
void java.awt.Component.dispatchEvent(java.awt.AWTEvent)
void java.awt.LightweightDispatcher.retargetMouseEvent(java.awt.Component, int, java.awt.event.MouseEvent)
boolean java.awt.LightweightDispatcher.processMouseEvent(java.awt.event.MouseEvent)
boolean java.awt.LightweightDispatcher.dispatchEvent(java.awt.AWTEvent)
void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent)
void java.awt.Window.dispatchEventImpl(java.awt.AWTEvent)
void java.awt.Component.dispatchEvent(java.awt.AWTEvent)
void java.awt.EventQueue.dispatchEvent(java.awt.AWTEvent)
boolean java.awt.EventDispatchThread.pumpOneEvent()
void java.awt.EventDispatchThread.pumpEvents(java.awt.Conditional)
void java.awt.EventDispatchThread.run()
Thank you very muchOne easy way to send a file through RMI is to read all bytes of a file to a byte array and send this array as a parameter of a remote method. But of course you may have problems with memory when you send large files. The receive is simillary.
Other way is to split the file and getting slices of the file, sending slices and re-assemble at destination. This assume that the file isn't changed through the full transfering is concluded.
I hope these could help you. -
URGENT HELP NEEDED FOR JTABLE PROBLEM!!!!!!!!!!!!!!!!!
firstly i made a jtable to adds and deletes rows and passes the the data to the table model from some textfields. then i wanted to add a tablemoselistener method in order to change the value in the columns 1,2,3,4 and set the result of them in the column 5. when i added that portion of code the buttons that added and deleted rows had problems to function correctly..they dont work at all..can somebody have a look in my code and see wot is wrong..thanx in advance..
below follows the code..sorry for the mesh of the code..you can use and run the code and notice the problem when you press the add button..also if you want delete the TableChanged method to see that the add button works perfect.
* Created on 03-Aug-2005
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
* @author Administrator
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Vector;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import java.io.*;
public class NodesTable extends JFrame implements TableModelListener, ActionListener {
JTable jt;
DefaultTableColumnModel dtcm;
TableColumn column[] = new TableColumn[100];
DefaultTableModel dtm;
JLabel Name,m1,w1,m2,w2;
JTextField NameTF,m1TF,w1TF,m2TF,w2TF;
String c [] ={ "Name", "Assessment1", "Weight1" , "Assessment2","Weight2 ","TotalMark"};
float x=0,y=0,tMark=0,z = 0;
float j=0;
int i;
JButton DelButton;
JButton AddButton;
JScrollPane scrollPane;
JPanel mainPanel,buttonPanel;
JFrame frame;
Object[][] data =
{"tami", new Float(1), new Float(1.11), new Float(1.11),new Float(1),new Float(1)},
{"tami", new Float(1), new Float(2.22), new Float(2.22),new Float(1),new Float(1)},
{"petros", new Float(1), new Float(3.33), new Float(3.33),new Float(1),new Float(1)},
{"petros", new Float(1), new Float(4.44), new Float(4.44),new Float(1),new Float(1)}
public NodesTable() {
super("Student Marking Spreadsheet");
this.AddNodesintoTable();
setSize(400,250);
setVisible(true);
public void AddNodesintoTable(){
// Create a vector object and load them with the data
// to be placed on each row of the table
dtm = new DefaultTableModel(data,c);
dtm.addTableModelListener( this );
jt = new JTable(dtm){
// Returning the Class of each column will allow different
// renderers to be used based on Class
public Class getColumnClass(int column)
return getValueAt(0, column).getClass();
// The Cost is not editable
public boolean isCellEditable(int row, int column)
int modelColumn = convertColumnIndexToModel( column );
return (modelColumn == 5) ? false : true;
//****************************User Input**************************
//Add another node
//Creating and setting the properties
//of the panel's component (panels and textfields)
Name = new JLabel("Name");
Name.setForeground(Color.black);
m1 = new JLabel("Mark1");
m1.setForeground(Color.black);
w1 = new JLabel("Weigth1");
w1.setForeground(Color.black);
m2= new JLabel("Mark2");
m2.setForeground(Color.black);
w2 = new JLabel("Weight2");
w2.setForeground(Color.black);
NameTF = new JTextField(5);
NameTF.setText("Node");
m1TF = new JTextField(5);
w1TF = new JTextField(5);
m2TF=new JTextField(5);
w2TF=new JTextField(5);
//creating the buttons
JPanel buttonPanel = new JPanel();
AddButton=new JButton("Add Row");
DelButton=new JButton("Delete") ;
buttonPanel.add(AddButton);
buttonPanel.add(DelButton);
//adding the components to the panel
JPanel inputpanel = new JPanel();
inputpanel.add(Name);
inputpanel.add(NameTF);
inputpanel.add(m1);
inputpanel.add(m1TF);
inputpanel.add(w1);
inputpanel.add(w1TF);
inputpanel.add(m2);
inputpanel.add(m2TF);
inputpanel.add(w2TF);
inputpanel.add(w2);
inputpanel.add(AddButton);
inputpanel.add(DelButton);
//creating the panel and setting its properties
JPanel tablepanel = new JPanel();
tablepanel.add(new JScrollPane(jt, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED
, JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS));
getContentPane().add(tablepanel, BorderLayout.CENTER);
getContentPane().add(inputpanel, BorderLayout.SOUTH);
//Method to add row for each new entry
public void addRow()
Vector r=new Vector();
r=createBlankElement();
dtm.addRow(r);
jt.addNotify();
public Vector createBlankElement()
Vector t = new Vector();
t.addElement((String) " ");
t.addElement((String) " ");
t.addElement((String) " ");
t.addElement((String) " ");
t.addElement((String) " ");
return t;
// Method to delete a row from the spreadsheet
void deleteRow(int index)
if(index!=-1) //At least one Row in Table
dtm.removeRow(index);
jt.addNotify();
// Method that adds and deletes rows
// from the table by pressing the
//corresponding buttons
public void actionPerformed(ActionEvent ae){
Float z=new Float (m2TF.getText());
String Name= NameTF.getText();
Float x= new Float(m1TF.getText());
Float y= new Float(w1TF.getText());
Float j=new Float (w2TF.getText());
JFileChooser jfc2 = new JFileChooser();
String newdata[]= {Name,String.valueOf(x),String.valueOf(y),
String.valueOf(z),String.valueOf(j)};
Object source = ae.getSource();
if(ae.getSource() == (JButton)AddButton)
addRow();
if (ae.getSource() ==(JButton) DelButton)
deleteRow(jt.getSelectedRow());
//method to calculate the total mark in the TotalMark column
//that updates the values in every other column
//It takes the values from the column 1,2,3,4
//and changes the value in the column 5
public void tableChanged(TableModelEvent e) {
System.out.println(e.getSource());
if (e.getType() == TableModelEvent.UPDATE)
int row = e.getFirstRow();
int column = e.getColumn();
if (column == 1 || column == 2 ||column == 3 ||column == 4)
TableModel model = jt.getModel();
float q= ((Float)model.getValueAt(row,1)).floatValue();
float w= ((Float)model.getValueAt(row,2)).floatValue();
float t= ((Float)model.getValueAt(row,3)).floatValue();
float r= ((Float)model.getValueAt(row,4)).floatValue();
Float tMark = new Float((q*w+t*r)/(w+r) );
model.setValueAt(tMark, row, 5);
// Which cells are editable.
// It is only necessary to implement this method
// if the table is editable
public boolean isCellEditable(int row, int col)
{ return true; //All cells are editable
public static void main(String[] args) {
NodesTable t=new NodesTable();
}There are too many mistakes in your program. It looks like you are new to java.
Your add and delete row buttons are not working because you haven't registered your action listener with these buttons.
I have modifide your code and now it works fine. Just put some validation code for the textboxes becuase it throws exception when user presses add button without entering anything.
Here is the updated code: Do the diff and u will know my changes
* Created on 03-Aug-2005
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
* @author Administrator
* TODO To change the template for this generated type comment go to Window -
* Preferences - Java - Code Style - Code Templates
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;
import javax.swing.table.TableModel;
public class NodesTable extends JFrame implements TableModelListener,
ActionListener {
JTable jt;
DefaultTableColumnModel dtcm;
TableColumn column[] = new TableColumn[100];
DefaultTableModel dtm;
JLabel Name, m1, w1, m2, w2;
JTextField NameTF, m1TF, w1TF, m2TF, w2TF;
String c[] = { "Name", "Assessment1", "Weight1", "Assessment2", "Weight2 ",
"TotalMark" };
float x = 0, y = 0, tMark = 0, z = 0;
float j = 0;
int i;
JButton DelButton;
JButton AddButton;
JScrollPane scrollPane;
JPanel mainPanel, buttonPanel;
JFrame frame;
public NodesTable() {
super("Student Marking Spreadsheet");
this.AddNodesintoTable();
setSize(400, 250);
setVisible(true);
public void AddNodesintoTable() {
// Create a vector object and load them with the data
// to be placed on each row of the table
dtm = new DefaultTableModel(c,0);
dtm.addTableModelListener(this);
jt = new JTable(dtm) {
// The Cost is not editable
public boolean isCellEditable(int row, int column) {
int modelColumn = convertColumnIndexToModel(column);
return (modelColumn == 5) ? false : true;
//****************************User Input**************************
//Add another node
//Creating and setting the properties
//of the panel's component (panels and textfields)
Name = new JLabel("Name");
Name.setForeground(Color.black);
m1 = new JLabel("Mark1");
m1.setForeground(Color.black);
w1 = new JLabel("Weigth1");
w1.setForeground(Color.black);
m2 = new JLabel("Mark2");
m2.setForeground(Color.black);
w2 = new JLabel("Weight2");
w2.setForeground(Color.black);
NameTF = new JTextField(5);
NameTF.setText("Node");
m1TF = new JTextField(5);
w1TF = new JTextField(5);
m2TF = new JTextField(5);
w2TF = new JTextField(5);
//creating the buttons
JPanel buttonPanel = new JPanel();
AddButton = new JButton("Add Row");
AddButton.addActionListener(this);
DelButton = new JButton("Delete");
DelButton.addActionListener(this);
buttonPanel.add(AddButton);
buttonPanel.add(DelButton);
//adding the components to the panel
JPanel inputpanel = new JPanel();
inputpanel.add(Name);
inputpanel.add(NameTF);
inputpanel.add(m1);
inputpanel.add(m1TF);
inputpanel.add(w1);
inputpanel.add(w1TF);
inputpanel.add(m2);
inputpanel.add(m2TF);
inputpanel.add(w2TF);
inputpanel.add(w2);
inputpanel.add(AddButton);
inputpanel.add(DelButton);
//creating the panel and setting its properties
JPanel tablepanel = new JPanel();
tablepanel.add(new JScrollPane(jt,
JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS));
getContentPane().add(tablepanel, BorderLayout.CENTER);
getContentPane().add(inputpanel, BorderLayout.SOUTH);
//Method to add row for each new entry
public void addRow() {
Float z = new Float(m2TF.getText());
String Name = NameTF.getText();
Float x = new Float(m1TF.getText());
Float y = new Float(w1TF.getText());
Float j = new Float(w2TF.getText());
String newdata[] = { Name, String.valueOf(x), String.valueOf(y),
String.valueOf(z), String.valueOf(j) };
dtm.addRow(newdata);
// Method to delete a row from the spreadsheet
void deleteRow(int index) {
if (index != -1) //At least one Row in Table
dtm.removeRow(index);
jt.addNotify();
// Method that adds and deletes rows
// from the table by pressing the
//corresponding buttons
public void actionPerformed(ActionEvent ae) {
Object source = ae.getSource();
if (ae.getSource() == (JButton) AddButton) {
addRow();
if (ae.getSource() == (JButton) DelButton) {
deleteRow(jt.getSelectedRow());
//method to calculate the total mark in the TotalMark column
//that updates the values in every other column
//It takes the values from the column 1,2,3,4
//and changes the value in the column 5
public void tableChanged(TableModelEvent e) {
System.out.println(e.getSource());
//if (e.getType() == TableModelEvent.UPDATE) {
int row = e.getFirstRow();
int column = e.getColumn();
if (column == 1 || column == 2 || column == 3 || column == 4) {
TableModel model = jt.getModel();
float q = (new Float(model.getValueAt(row, 1).toString())).floatValue();
float w = (new Float(model.getValueAt(row, 2).toString())).floatValue();
float t = (new Float(model.getValueAt(row, 3).toString())).floatValue();
float r = (new Float(model.getValueAt(row, 4).toString())).floatValue();
Float tMark = new Float((q * w + t * r) / (w + r));
model.setValueAt(tMark, row, 5);
// Which cells are editable.
// It is only necessary to implement this method
// if the table is editable
public boolean isCellEditable(int row, int col) {
return true; //All cells are editable
public static void main(String[] args) {
NodesTable t = new NodesTable();
} -
Problem with PDFBox-0.7.3 library - Runtime Error
Hello,
The problem is inside the method "chamaConversor".
" conversor.pdfToText(arquivoPdf,arquivoTxt);" make a file.txt from one file.pdf. After that it don?t return the control to "ConstrutorDeTemplate2.java", and show the following error message:
Exception in thread "AWT-EventQueue-O" java.lang.NoClassDefFoundError : org/fontbox/afm/FontMetric
at org.pdfbox.pdmodel.font.PDFont.getAFM (PDFont.java:334)
I am using the NetBeans IDE 5.5.
I have added all of these libraries below to my project from c:\Program Files\netbeans-5.5\PDFBox-0.7.3\external:
* FontBox-0.1.0-dev.jar
* ant.jar
* bcmail-jdk14-132.jar
* junit.jar
* bcprov-jdk14-132.jar
* lucene-core-2.0.0.jar
* checkstyle-all-4.2.jar
* lucene-demos-2.0.0.jar
and PDFBox-0.7.3.jar from c:\Program Files\netbeans-5.5\PDFBox-0.7.3\lib.
There are no more jar from PDFBox-0.7.3 directory.
All of these libraries are in "Compile-time Libraries" option in Project Properties. Should I add they to "Run-time Libraries" option?
What is going on?
Thank you!
* ConstrutorDeTemplate2.java
* Created on 11 de Agosto de 2007, 14:54
* @author
package br.unifacs.dis2007.template2;
// Java core packages
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.text.*;
import java.util.*;
// Java extension packages
import javax.swing.*;
import org.pdfbox.*;
public class ConstrutorDeTemplate2 extends JFrame
implements ActionListener {
private JTextField enterField;
private JTextArea outputArea;
private BufferedWriter out;
private String word;
private PdfToText conversor = new PdfToText();
// ajusta a interface do usu?rio
public ConstrutorDeTemplate2()
super( "Testing class File" );
enterField = new JTextField("Digite aqui o nome do arquivo :" );
enterField.addActionListener( this );
outputArea = new JTextArea();
ScrollPane scrollPane = new ScrollPane();
scrollPane.add( outputArea );
Container container = getContentPane();
container.add( enterField, BorderLayout.NORTH );
container.add( scrollPane, BorderLayout.CENTER );
setSize( 400, 400 );
show();
// Exibe as informa??es sobre o arquivo especificado pelo usu?rio
public void actionPerformed( ActionEvent actionEvent )
File name = new File( actionEvent.getActionCommand() );
// Se o arquivo existe, envia para a sa?da as informa??es sobre ele
if ( name.exists() ) {
outputArea.setText(
name.getName() + " exists\n" +
( name.isFile () ?
"is a file\n" : "is not a file\n" ) +
( name.isDirectory() ?
"is a directory\n" : "is not a directory\n" ) +
( name.isAbsolute() ? "is absolute path\n" :
"is not absolute path\n" ) +
"Last modified: " + name.lastModified() +
"\nLength: " + name.length () +
"\nPath: " + name.getPath() +
"\nAbsolute path: " + name.getAbsolutePath() +
"\nParent: " + name.getParent() );
// informa??o de sa?da se "name" ? um arquivo
if ( name.isFile() ) {
String nameString = String.valueOf(name.getPath());
String nameTeste = new String(nameString);
if (nameString.endsWith(".pdf"))
nameTeste = chamaConversor(nameString);
else
if (nameString.endsWith(".doc"))
nameTeste = chamaConversorDoc(nameString); // chama conversor de arquivos DOC
else
if (nameString.endsWith(".txt"))
nameTeste = nameString;
// se o arquivo termina com ".txt"
if (nameTeste.endsWith(".txt"))
// acrescenta conte?do do arquivo ? ?rea de sa?da
try {
// Create the tokenizer to read from a file
FileReader rd = new FileReader(nameTeste);
StreamTokenizer st = new StreamTokenizer(rd);
// Prepare the tokenizer for Java-style tokenizing rules
st.parseNumbers();
st.wordChars('_', '_');
st.eolIsSignificant (true);
// If whitespace is not to be discarded, make this call
st.ordinaryChars(0, ' ');
// These calls caused comments to be discarded
st.slashSlashComments(true);
st.slashStarComments(true);
// Parse the file
int token = st.nextToken();
String word_ant = "";
outputArea.append( " \n" );
out = new BufferedWriter(new FileWriter(nameTeste, true));
while (token != StreamTokenizer.TT_EOF) {
token = st.nextToken();
if (token == StreamTokenizer.TT_EOL){
//out.write(word);
out.flush();
out = new BufferedWriter(new FileWriter(nameTeste, true));
//outputArea.append( word + "\n" );
// out.append ( "\n" );
switch (token) {
case StreamTokenizer.TT_NUMBER:
// A number was found; the value is in nval
double num = st.nval;
break;
case StreamTokenizer.TT_WORD:
// A word was found; the value is in sval
word = st.sval;
// if (word_ant.equals("a") || word_ant.equals("an") || word_ant.equals("the") || word_ant.equals("The") || word_ant.equals("An"))
outputArea.append( word.toString() + " \n " );
// out.append( word + " " );
// word_ant = word;
break;
case '"':
// A double-quoted string was found; sval contains the contents
String dquoteVal = st.sval;
break;
case '\'':
// A single-quoted string was found; sval contains the contents
String squoteVal = st.sval;
break;
case StreamTokenizer.TT_EOL:
// End of line character found
break;
case StreamTokenizer.TT_EOF:
// End of file has been reached
break;
default:
// A regular character was found; the value is the token itself
char ch = (char)st.ttype;
break;
} // fim do switch
} // fim do while
rd.close();
out.close();
} // fim do try
// process file processing problems
catch( IOException ioException ) {
JOptionPane.showMessageDialog( this,
"FILE ERROR",
"FILE ERROR", JOptionPane.ERROR_MESSAGE );
} // fim do if da linha 92 - testa se o arquivo ? do tipo texto
} // fim do if da linha 78 - testa se ? um arquivo
// output directory listing
else if ( name.isDirectory() ) {
String directory[] = name.list();
outputArea.append( "\n\nDirectory contents:\n");
for ( int i = 0; i < directory.length; i++ )
outputArea.append( directory[ i ] + "\n" );
} // fim do else if da linha 184 - testa se ? um diret?rio
} // fim do if da linha 62 - testa se o arquivo existe
// not file or directory, output error message
else {
JOptionPane.showMessageDialog( this,
actionEvent.getActionCommand() + " Does Not Exist",
"ERROR", JOptionPane.ERROR_MESSAGE );
} // fim do m?todo actionPerformed
// m?todo que chama o conversor
public String chamaConversor(String arquivoPdf){
String arquivoTxt = new String(arquivoPdf);
arquivoTxt = arquivoPdf.replace(".pdf", ".txt");
try {
conversor.pdfToText(arquivoPdf,arquivoTxt);
catch (Exception ex) {
ex.printStackTrace();
return (arquivoTxt);
// executa a aplica??o
public static void main( String args[] )
ConstrutorDeTemplate2 application = new ConstrutorDeTemplate2();
application.setDefaultCloseOperation (
JFrame.EXIT_ON_CLOSE );
} // fim do m?todo main
} // fim da classe ExtratorDeSubstantivos2
* PdfToText.java
* Created on 11 de Agosto de 2007, 10:57
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
//package br.unifacs.dis2007.template2;
* @author www
package br.unifacs.dis2007.template2;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.net.MalformedURLException;
import java.net.URL ;
import org.pdfbox.pdmodel.PDDocument;
import org.pdfbox.pdmodel.encryption.AccessPermission;
import org.pdfbox.pdmodel.encryption.StandardDecryptionMaterial;
import org.pdfbox.util.PDFText2HTML;
import org.pdfbox.pdmodel.font.PDFont.* ;
import org.pdfbox.util.PDFTextStripper;
import org.pdfbox.util.*;
import org.pdfbox.pdmodel.*;
public class PdfToText
public void pdfToText( String pdfFile, String textFile) throws Exception
Writer output = null;
PDDocument document = null;
try
try
//basically try to load it from a url first and if the URL
//is not recognized then try to load it from the file system.
URL url = new URL( pdfFile );
document = PDDocument.load( url );
String fileName = url.getFile();
if( textFile == null && fileName.length () >4 )
File outputFile =
new File( fileName.substring( 0,fileName.length() -4 ) + ".txt" );
textFile = outputFile.getName();
catch( MalformedURLException e )
document = PDDocument.load( pdfFile );
if( textFile == null && pdfFile.length() >4 )
textFile = pdfFile.substring( 0,pdfFile.length() -4 ) + ".txt";
//use default encoding
output = new OutputStreamWriter( new FileOutputStream( textFile ) );
PDFTextStripper stripper = null;
stripper = new PDFTextStripper();
stripper.writeText( document, output );
finally
if( output != null )
output.close();
if( document != null )
document.close();
}//finally
}//end funcao
All of these libraries are in "Compile-time
Libraries" option in Project Properties. Should I add
they to "Run-time Libraries" option?Yes -
ActionListener Problem - Event not triggering properly
Hello,
I have slight problem ith action listeners. Below is an exercise from a book on java i'm reading. I have constructed rectangle with 3 circles inside.
When the button in one panel is pushed the colors of these cicles should change from green,black,black to black,yellow,black to black,black,red and start over.
When the button is clicked the event isn't triggered. However when I push the button and click the frame of the window the colors change.
I would be grateful if anyone could explain why this is happening?
// Zepang
import javax.swing.*;
import java.awt.*;
public class Pp415
public static void main(String [] args)
JFrame frame = new JFrame("Traffic Lights");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Prime panel = new Prime();
frame.getContentPane().add(panel);
frame.pack();
frame.setVisible(true);
JButton lightButton = new JButton("Change the Lights!");
lightButton.addActionListener(this);
buttonLight.add(lightButton);
add(buttonLight);
add(light);
int color = 0;
public void actionPerformed (ActionEvent event)
Color g = light.getGreenLight();
Color y= light.getYellowLight();
Color r= light.getRedLight();
if (g.equals(Color.green))
light.setGreenLight(Color.black);
light.setYellowLight(Color.yellow);
if (y.equals(Color.yellow))
light.setYellowLight(Color.black);
light.setRedLight(Color.red);
if (r.equals(Color.red))
light.setRedLight(Color.black);
light.setGreenLight(Color.green);
import javax.swing.*;
import java.awt.*;
class TrafficLight extends JPanel
Color redLight = Color.black;
Color yellowLight = Color.black;
Color greenLight = Color.green;
public TrafficLight()
setBackground(Color.black);
setPreferredSize(new Dimension (200,300));
public void setRedLight(Color c)
redLight = c;
public void setYellowLight(Color c)
yellowLight = c;
public void setGreenLight(Color c)
greenLight = c;
public Color getRedLight()
return redLight;
public Color getGreenLight()
return greenLight;
public Color getYellowLight()
return yellowLight;
public void paintComponent(Graphics page)
final int C = 25;
page.setColor(Color.blue);
page.fillRect(C, C, 100, 250);
page.setColor(greenLight);
page.fillOval(C+10,C+5,80,80);
page.setColor(yellowLight);
page.fillOval(C+10,C+90,80,80);
page.setColor(redLight);
page.fillOval(C+10,C+170,80,80);
}Edited by: Zepang on Dec 4, 2008 4:24 PM
Edited by: Zepang on Dec 4, 2008 4:25 PMI don't in general do GUI stuff. But I can see for sure that you're never telling the system that it needs to repaint when you change state. That's why it doesn't show up until you cause an external event causing it to repaint itself, such as resizing the frame or dragging another window across the window.
-
Can some one help me with this problem with my frame???
i have gt a veri strange problem with my program,that is teh graphic changes only when i resize the the frame,if i dun resize,it will remain the same.However what i intended is that when i click on the radio button,it will change immediately to the respective pages.A simple version of my code is below,can someone helpl me solve it??(there is 3 different class)
import java.awt.event.*;
import javax.swing.*;
public class MainPg extends JFrame implements ActionListener{
private javax.swing.JPanel jContentPane = null;
private javax.swing.JPanel buttons = null;
private javax.swing.JRadioButton one = null;
private javax.swing.JRadioButton two = null;
private javax.swing.JPanel change = null;
public MainPg() {
super();
initialize();
private void initialize() {
this.setSize(300, 200);
this.setContentPane(getJContentPane());
this.setName("mainClass");
this.setVisible(true);
private javax.swing.JPanel getJContentPane() {
if (jContentPane == null) {
jContentPane = new javax.swing.JPanel();
jContentPane.setLayout(new java.awt.BorderLayout());
jContentPane.add(getButtons(), java.awt.BorderLayout.WEST);
jContentPane.add(getChange(), java.awt.BorderLayout.CENTER);
return jContentPane;
private javax.swing.JPanel getButtons() {
if(buttons == null) {
buttons = new javax.swing.JPanel();
java.awt.GridLayout layGridLayout1 = new java.awt.GridLayout();
layGridLayout1.setRows(2);
layGridLayout1.setColumns(1);
ButtonGroup group=new ButtonGroup();
group.add(getOne());
group.add(getTwo());
buttons.setLayout(layGridLayout1);
buttons.add(getOne(), null);
buttons.add(getTwo(), null);
return buttons;
private javax.swing.JRadioButton getOne() {
if(one == null) {
one = new javax.swing.JRadioButton();
one.setText("One");
one.setSelected(true);
one.addActionListener(this);
one.setActionCommand("one");
return one;
private javax.swing.JRadioButton getTwo() {
if(two == null) {
two = new javax.swing.JRadioButton();
two.setText("Two");
two.addActionListener(this);
two.setActionCommand("two");
return two;
private javax.swing.JPanel getChange() {
if(change == null) {
change = new javax.swing.JPanel();
change.add(new One());
return change;
public static void main(String[] args){
new MainPg();
public void actionPerformed(ActionEvent e) {
change.removeAll();
if("one".equals(e.getActionCommand())){
change.add(new One());
else{
change.add(new Two());
change.repaint();
import javax.swing.*;
public class One extends JPanel {
private javax.swing.JPanel jPanel = null;
private javax.swing.JLabel jLabel = null;
private javax.swing.JPanel jPanel1 = null;
private javax.swing.JLabel jLabel1 = null;
private javax.swing.JLabel jLabel2 = null;
public One() {
super();
initialize();
* This method initializes this
* @return void
private void initialize() {
this.setLayout(new java.awt.BorderLayout());
this.add(getJPanel(), java.awt.BorderLayout.NORTH);
this.add(getJPanel1(), java.awt.BorderLayout.WEST);
this.setSize(300, 200);
* This method initializes jPanel
* @return javax.swing.JPanel
private javax.swing.JPanel getJPanel() {
if(jPanel == null) {
jPanel = new javax.swing.JPanel();
jPanel.add(getJLabel(), null);
return jPanel;
* This method initializes jLabel
* @return javax.swing.JLabel
private javax.swing.JLabel getJLabel() {
if(jLabel == null) {
jLabel = new javax.swing.JLabel();
jLabel.setText("one");
return jLabel;
* This method initializes jPanel1
* @return javax.swing.JPanel
private javax.swing.JPanel getJPanel1() {
if(jPanel1 == null) {
jPanel1 = new javax.swing.JPanel();
java.awt.GridLayout layGridLayout2 = new java.awt.GridLayout();
layGridLayout2.setRows(2);
layGridLayout2.setColumns(1);
jPanel1.setLayout(layGridLayout2);
jPanel1.add(getJLabel2(), null);
jPanel1.add(getJLabel1(), null);
return jPanel1;
* This method initializes jLabel1
* @return javax.swing.JLabel
private javax.swing.JLabel getJLabel1() {
if(jLabel1 == null) {
jLabel1 = new javax.swing.JLabel();
jLabel1.setText("one");
return jLabel1;
* This method initializes jLabel2
* @return javax.swing.JLabel
private javax.swing.JLabel getJLabel2() {
if(jLabel2 == null) {
jLabel2 = new javax.swing.JLabel();
jLabel2.setText("one");
return jLabel2;
import javax.swing.*;
public class Two extends JPanel {
private javax.swing.JLabel jLabel = null;
public Two() {
super();
initialize();
* This method initializes this
* @return void
private void initialize() {
this.setLayout(new java.awt.FlowLayout());
this.add(getJLabel(), null);
this.setSize(300, 200);
* This method initializes jLabel
* @return javax.swing.JLabel
private javax.swing.JLabel getJLabel() {
if(jLabel == null) {
jLabel = new javax.swing.JLabel();
jLabel.setText("two");
return jLabel;
}//change.repaint();
change.revalidate(); -
Puzzle Game and new Game Problem
Hello Java Programmers,
Once again I have encountered a problem with my ongoing puzzle game. I have completed it all. Now I want my user to be able to start a new game in after they win. I tried repaint and update method with JFrame but it deosn't reshuffle the buttons. How can I do that. The code geos below.
[/b]
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
import javax.swing.JOptionPane;
public class PuzzleGame{
String[] btn_Labels = {"1","2","3","4","5","6","7","8","9",
"10","11","12","13","14","15"," "};
String[] labels = {"1","2","3","4","5","6","7","8","9",
"10","11","12","13","14","15"};
private final int ONE = 1, TWO = 2, THREE = 3, FIVE = 5;
private boolean WIN_STATE = false;
private JButton b[];
public String clicked_btn_label = "";
//Constructor method.
public PuzzleGame(){
showSplashScreen();
initGame();
public static void main(String args[]){
PuzzleGame game = new PuzzleGame();
//When a new Game started labels of buttons are shuffled using this method.
public void shuffleNumbers(){
String temp = null;
for(int j=0; j<16; j++){
int k = (int)(Math.random()*16);
temp = btn_Labels[j];
btn_Labels[j] = btn_Labels[k];
btn_Labels[k] = temp;
//Game initialization method.
public void initGame(){
b = new JButton[16];
JPanel p = new JPanel();
JFrame frame = new JFrame();
shuffleNumbers();
for(int i=0; i<16; i++){
b[i] = new JButton();
b.setText(btn_Labels[i]);
b[i].setActionCommand(""+(i+1));
for(int i=0; i<16; i++){
b[i].addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent e){
clicked_btn_label =(String)e.getActionCommand();
doSwapping();
checkWin();
p.add(b[i]);
p.setLayout(new GridLayout(4,4));
frame.getContentPane().add(p);
frame.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
Dimension dm = Toolkit.getDefaultToolkit().getScreenSize();
int x = (dm.width - 230)/2;
int y = (dm.height - 240)/2;
frame.setBounds(x,y,320,240);
frame.setSize(340,240);
frame.setVisible(true);
//This method swaps the clicked button with the empty button if it doesn't violate rule.
public void doSwapping(){
int num = Integer.parseInt(clicked_btn_label);
String temp;
if( (num + ONE <= 16) && b[num].getText() == " " && num % 4 != 0){
temp = b[num].getText();
b[num].setText(b[num-ONE].getText());
b[num-ONE].setText(temp);
else if((num - TWO >= 0) && b[num-TWO].getText() == " " && ((num - ONE) % 4 != 0)){
temp = b[num-ONE].getText();
b[num-ONE].setText(b[num-TWO].getText());
b[num-TWO].setText(temp);
else if( (num + THREE < 16) && b[num+THREE].getText() == " "){
temp = b[num-ONE].getText();
b[num-ONE].setText(b[num+THREE].getText());
b[num+THREE].setText(temp);
else if( (num - FIVE >= 0) && b[num-FIVE].getText() == " "){
temp = b[num-ONE].getText();
b[num-ONE].setText(b[num-FIVE].getText());
b[num-FIVE].setText(temp);
// else{}
public void checkWin(){
WIN_STATE = true;
for(int i=0; i<15; i++){
if( b[i].getText() != labels[i])
WIN_STATE = false;
if(WIN_STATE == true){
JOptionPane.showMessageDialog(null,"Congratulations You Have won the Game!","You Win",JOptionPane.INFORMATION_MESSAGE);
initGame();
public void showSplashScreen(){
JWindow w = new JWindow();
JPanel p = (JPanel)w.getContentPane();
JLabel l = new JLabel(new ImageIcon("splash.jpg"));
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
int x = (d.width - 230)/2;
int y = (d.height - 240)/2;
p.add(l);
w.setBounds(x,y,320,240);
w.setVisible(true);
try{
Thread.sleep(10000);
catch(Exception e){
w.setVisible(false);
[/b]Sorry for violation. I would like to add a menubar to the application containing a single menu button for new game. adding a menubar is simple but how can i reshuffle the buttons using methods like update etc. or any other way.
-
The Rules of Game of Life
For a space that is 'populated':
Each cell with one or no neighbors dies, as if by loneliness.
Each cell with four or more neighbors dies, as if by overpopulation.
Each cell with two or three neighbors survives.
For a space that is 'empty' or 'unpopulated'
Each cell with three neighbors becomes populated.
I have three classes: Cell, BoardComponent, and GameViewer
I got few problems in my code: 1. the button shows wrongly, 2. without the button, there is always a dot on the upper-left corner, which is not on purpose, 3, after click the mouse to initialize few dots, nothing happened
How could I fix those problems?
My Code:
1. Cell:
import java.awt.Rectangle;
public class Cell extends Rectangle{
public Cell(int x, int y, int side)
super(x, y, side, side);
}2. BoardComponent:
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JComponent;
import com.sun.jdi.event.Event;
public class BoardComponent extends JComponent{
public BoardComponent()
for(int i = 0; i < ROW; i++)
for(int j = 0; j < COL; j++)
board[i][j] = new Cell(i*SIDE, j*SIDE, SIDE);
public void paint(Graphics g)
Graphics2D g2 = (Graphics2D)g;
for(int i = 0; i < ROW; i++)
for(int j = 0; j < COL; j++)
g2.draw(board[i][j]);
public void initialize(int x, int y)
Graphics g = getGraphics();
Graphics2D g2 = (Graphics2D) g;
if(g2.getColor().equals(Color.BLUE))
g2.getBackground();
else
g2.setColor(Color.BLUE);
g.fillOval(mouseX, mouseY, 10, 10);
public void generate()
int count = 0;
for(int i = 0; i < ROW-2; i++)
for(int j = 0; j < COL-2; j++)
for(int m = 0; m < 2; m++)
for(int n = 0; n < 2; n++)
if(m!=0 || n !=0)
if(!(board[i+m][j+n].isEmpty()))
count++;
if(count == 3 || count < 2 || count > 4)
initialize(i*SIDE, j*SIDE);
private int mouseX, mouseY;
private boolean mouseclicked = false;
public static final int ROW = 40;
public static final int COL = 40;
private Cell[][] board = new Cell[ROW][COL];
public static final int SIDE = 14;
}3. GameViewer:
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.Timer;
public class GameViewer extends JFrame{
public static void main(String[] args)
final BoardComponent game = new BoardComponent();
class MouseClickListener extends MouseAdapter
public void mouseClicked(MouseEvent event)
int x = event.getX();
int y = event.getY();
game.initialize(x, y);
MouseAdapter listener = new MouseClickListener();
game.addMouseListener(listener);
JButton button = new JButton("Start");
class TimerListener implements ActionListener
public void actionPerformed(ActionEvent event)
game.generate();
ActionListener timer = new TimerListener();
button.setSize(40, 10);
button.setLocation(250, 500);
button.addActionListener(timer);
final int DELAY = 500;
Timer t = new Timer(DELAY, timer);
t.start();
JFrame window = new JFrame();
window.setSize(600, 600);
window.setTitle("Life of Game");
window.setDefaultCloseOperation(EXIT_ON_CLOSE);
window.add(game);
window.add(button);
window.setVisible(true);
}Thanks a million.As already said, you should override paintComponent(), not paint(), and don't forget to call the superclass's paintComponent() method.
public void paintComponent(Graphics g)
super.paintComponent(g);
}As for this method:
public void initialize(int x, int y)
Graphics g = getGraphics();
Graphics2D g2 = (Graphics2D) g;
if(g2.getColor().equals(Color.BLUE))
g2.getBackground();
else
g2.setColor(Color.BLUE);
g.fillOval(mouseX, mouseY, 10, 10);
}You really shouldn't be doing any painting outside the paintComponent() method.
Finally, your GameViewer class extends JFrame, but yet you are creating another JFrame in the main method. This doesn't make sense. -
Advance level drawing problem with Jframe and JPanel need optimize sol?
Dear Experts,
I m trying to create a GUI for puzzle game following some kind of "game GUI template", but i have problems in that,so i tried to implement that in various ways after looking on internet and discussions about drawing gui in swing, but i have problem with both of these, may be i m doing some silly mistake, which is still out of my consideration. please have a look at these two and recommend me one of them, which is running without problems (flickring and when you enlarge window the board draw copies (tiled) everywhere,
Note: i don't want to inherit jpanel or Jframe
here is my code : import java.awt.BorderLayout;
public class GameMain extends JFrame {
private static final long serialVersionUID = 1L;
public int mX, mY;
int localpoints = 0;
protected static JTextField[][] squares;
protected JLabel statusLabel = new JLabel("jugno");
Label lbl_score = new Label("score");
Label lbl_scorelocal = new Label("local score");
protected static TTTService remoteTTTBoard;
// Define constants for the game
static final int CANVAS_WIDTH = 800; // width and height of the game screen
static final int CANVAS_HEIGHT = 600;
static final int UPDATE_RATE = 4; // number of game update per second
static State state; // current state of the game
private int mState;
// Handle for the custom drawing panel
private GameCanvas canvas;
// Constructor to initialize the UI components and game objects
public GameMain() {
// Initialize the game objects
gameInit();
// UI components
canvas = new GameCanvas();
canvas.setPreferredSize(new Dimension(CANVAS_WIDTH, CANVAS_HEIGHT));
this.setContentPane(canvas);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.pack();
this.setTitle("MY GAME");
this.setVisible(true);
public void gameInit() {
// Shutdown the game, clean up code that runs only once.
public void gameShutdown() {
// To start and re-start the game.
public void gameStart() {
private void gameLoop() {
public void keyPressed(KeyEvent e) {
public void keyTyped(KeyEvent e) {
public void gameKeyReleased(KeyEvent e) {
PuzzleBoard bd = getBoard();
for (int row = 0; row < 4; ++row) {
for (int col = 0; col < 4; ++col) {
if (e.getSource() == squares[row][col]) {
if (bd.isOpen(col, row)) {
lbl_score.setText("Highest Score = "
+ Integer.toString(bd.getPoints()));
setStatus1(bd);
pickSquare1(col, row, squares[row][col].getText()
.charAt(0));
protected void pickSquare1(int col, int row, char c) {
try {
remoteTTTBoard.pick(col, row, c);
} catch (RemoteException e) {
System.out.println("Exception: " + e.getMessage());
e.printStackTrace();
System.exit(1);
// method "called" by remote object to update the state of the game
public void updateBoard(PuzzleBoard new_board) throws RemoteException {
String s1;
for (int row = 0; row < 4; ++row) {
for (int col = 0; col < 4; ++col) {
squares[row][col].setText(new_board.ownerStr(col, row));
lbl_score.setText("Highest Score = "
+ Integer.toString(new_board.getPoints()));
setStatus1(new_board);
protected void setStatus1(PuzzleBoard bd) {
boolean locals = bd.getHave_winner();
System.out.println("local win" + locals);
if (locals == true) {
localpoints++;
System.out.println("in condition " + locals);
lbl_scorelocal.setText("Your Score = " + localpoints);
lbl_score
.setText("Highest Score = " + Integer.toString(bd.getPoints()));
protected PuzzleBoard getBoard() {
PuzzleBoard res = null;
try {
res = remoteTTTBoard.getState();
} catch (RemoteException e) {
System.out.println("Exception: " + e.getMessage());
e.printStackTrace();
System.exit(1);
return res;
/** Custom drawing panel (designed as an inner class). */
class GameCanvas extends JPanel implements KeyListener {
/** Custom drawing codes */
@Override
public void paintComponent(Graphics g) {
// setOpaque(false);
super.paintComponent(g);
// main box; everything placed in this
// JPanel box = new JPanel();
setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
// add(statusLabel, BorderLayout.NORTH);
// set up the x's and o's
JPanel xs_and_os = new JPanel();
xs_and_os.setLayout(new GridLayout(5, 5, 0, 0));
squares = new JTextField[5][5];
for (int row = 0; row < 5; ++row) {
for (int col = 0; col < 5; ++col) {
squares[row][col] = new JTextField(1);
squares[row][col].addKeyListener(this);
if ((row == 0 && col == 1) || (row == 2 && col == 3)
|| (row == 1 && col == 4) || (row == 4 && col == 4)
|| (row == 4 && col == 0))
JPanel p = new JPanel(new BorderLayout());
JLabel label;
if (row == 0 && col == 1) {
label = new JLabel("1");
label.setHorizontalAlignment(JLabel.LEFT);
label.setVerticalAlignment(JLabel.TOP);
else if (row == 4 && col == 0) {// for two numbers or
// two
// blank box in on row
label = new JLabel("2");
label.setHorizontalAlignment(JLabel.LEFT);
label.setVerticalAlignment(JLabel.TOP);
else if (row == 1 && col == 4) {
label = new JLabel("3");
label.setHorizontalAlignment(JLabel.LEFT);
label.setVerticalAlignment(JLabel.TOP);
else if (row == 4) {
label = new JLabel("4");
label.setHorizontalAlignment(JLabel.LEFT);
label.setVerticalAlignment(JLabel.TOP);
else {
label = new JLabel("5");
label.setHorizontalAlignment(JLabel.LEFT);
label.setVerticalAlignment(JLabel.TOP);
label.setOpaque(true);
label.setBackground(squares[row][col].getBackground());
label.setPreferredSize(new Dimension(label
.getPreferredSize().width, squares[row][col]
.getPreferredSize().height));
p.setBorder(squares[row][col].getBorder());
squares[row][col].setBorder(null);
p.add(label, BorderLayout.WEST);
p.add(squares[row][col], BorderLayout.CENTER);
xs_and_os.add(p);
} else if ((row == 2 && col == 1) || (row == 1 && col == 2)
|| (row == 3 && col == 3) || (row == 0 && col == 3)) {
xs_and_os.add(squares[row][col]);
// board[ row ][ col ].setEditable(false);
// board[ row ][ col ].setText("");
squares[row][col].setBackground(Color.RED);
squares[row][col].addKeyListener(this);
} else {
squares[row][col] = new JTextField(1);
// squares[row][col].addActionListener(this);
squares[row][col].addKeyListener(this);
xs_and_os.add(squares[row][col]);
this.add(xs_and_os);
this.add(statusLabel);
this.add(lbl_score);
this.add(lbl_scorelocal);
public void keyPressed(KeyEvent e) {
public void keyReleased(KeyEvent e) {
gameKeyReleased(e);
public void keyTyped(KeyEvent e) {
// main
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new GameMain();
thanks a lot for your time , consideration and efforts.
jibby
Edited by: jibbylala on Sep 20, 2010 6:06 PMjibbylala wrote:
thanks for mentioning as i wasn't able to write complete context here.Yep thanks camickr. I think that Darryl's succinct reply applies here as well. -
JInternalFrame drawing problem.
Hi gurus
Please could you help with a java problem that I cant find an answer to over the net:
I have a JDesktop which contains multiple JInternalFrames. On one JInternalFrame i have attached a JPanel on which to draw on. I have multiple threads (simple ball shapes) that need to be drawn onto the JPanel and have left it up to the indivual threads to draw themselves (as opposed to using paintComponent in the JPanel class). The drawing on the JInternalFrame works perfectly fine.
The problem arises when the other JInternalFrames are placed on top of each other - the balls are drawn over the top most JInternalFrame. What am i doing wrong? I have attached snippets of the code:
public class Desktop extends JFrame implements ActionListener
public Desktop()
setTitle("Agent's world");
setSize(w,h);
setDefaultCloseOperation(EXIT_ON_CLOSE);
JDesktopPane desktop = new JDesktopPane();
setContentPane(desktop);
/************* Agent *************/
JInternalFrame agents = new JInternalFrame("Agents War", true, false, true, false);
agents.reshape(0,0,(int)((w/3)*2),h);
Container contentPane = agents.getContentPane();
canvas = new AgentPanel(agents);
contentPane.add(canvas);
/************* Button *************/
JPanel buttonPanel = new JPanel();
ButtonGroup buttonGroup = new ButtonGroup();
JButton start = new JButton("START");
start.addActionListener(this);
buttonPanel.add(start);
contentPane.add(buttonPanel, "North");
agents.setVisible(true);
desktop.add(agents);
//sets focus to other frames within the desktop
try
agents.setSelected(true);
catch(PropertyVetoException e)
//attempt to refocus was vetoed by a frame
/** Method to listen for event actions, i.e. button clicks **/
public void actionPerformed(ActionEvent event)
//passes through 'this' to allow access to the getList method
Agents agent = new Agents(canvas, this);
agent.start();
public class Agents extends Thread
public Agents(AgentPanel panel, Desktop desktop)
panel =_panel;
desktop = _desktop;
setDaemon(true);
/** Moves the agent from a spefic position to a new position **/
public void move()
Graphics g = panel.getGraphics();
Graphics2D g2 = (Graphics2D)g;
try
//set XOR mode
g.setXORMode(panel.getBackground());
//draw over old
Ellipse2D.Double ballOld = new Ellipse2D.Double(i , j, length, length);
g2.fill(ballOld);
i++;
j++;
if(flag == true)
//draw new
Ellipse2D.Double ballNew = new Ellipse2D.Double(i , j, length, length);
g2.fill(ballNew);
g2.setPaintMode();
finally
g.dispose();
/** Activates the Thread **/
public void run()
int i = 0;
while(!interrupted() && i<100)
try
for(i = 0 ; i <100 ; i++)
//draw ball in old position move();
sleep(100);
catch(InterruptedException e)
public class AgentPanel extends JPanel
/** local copy of internal frame */
private JInternalFrame frame;
public AgentPanel(JInternalFrame _frame)
frame = _frame;
setSize(frame.getWidth(), frame.getHeight());
setBackground(Color.white);
public void paintComponent(Graphics g)
super.paintComponent(g);
Thank you in advance.
RavsI have the same problem. Seems to be a bug. See:
http://forum.java.sun.com/thread.jsp?forum=57&thread=231037
Bummer.
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