Just learning EJB - having problems compiling
I'm trying to learn EJB by going through the Sun J2EE tutorial. When trying to compile the converter example I get the following error messages:
E:\MostlyJava\j2eetutorial\examples>ant converter
Buildfile: build.xml
init:
converter:
[javac] Compiling 4 source files to E:\MostlyJava\j2eetutorial\examples\buil
d\ejb\converter
[javac] E:\MostlyJava\j2eetutorial\examples\src\ejb\converter\Converter.java
:10: cannot resolve symbol
[javac] symbol : class EJBObject
[javac] location: package ejb
[javac] import javax.ejb.EJBObject;
[javac] ^
[javac] E:\MostlyJava\j2eetutorial\examples\src\ejb\converter\Converter.java
:14: cannot resolve symbol
[javac] symbol : class EJBObject
[javac] location: interface Converter
[javac] public interface Converter extends EJBObject {
[javac] ^
[javac] E:\MostlyJava\j2eetutorial\examples\src\ejb\converter\ConverterBean.
java:11: cannot resolve symbol
[javac] symbol : class SessionBean
[javac] location: package ejb
[javac] import javax.ejb.SessionBean;
[javac] ^
[javac] E:\MostlyJava\j2eetutorial\examples\src\ejb\converter\ConverterBean.
java:12: cannot resolve symbol
[javac] symbol : class SessionContext
[javac] location: package ejb
[javac] import javax.ejb.SessionContext;
[javac] ^
[javac] E:\MostlyJava\j2eetutorial\examples\src\ejb\converter\ConverterBean.
java:15: cannot resolve symbol
[javac] symbol : class SessionBean
[javac] location: class ConverterBean
[javac] public class ConverterBean implements SessionBean {
[javac] ^
[javac] E:\MostlyJava\j2eetutorial\examples\src\ejb\converter\ConverterBean.
java:37: cannot resolve symbol
[javac] symbol : class SessionContext
[javac] location: class ConverterBean
[javac] public void setSessionContext(SessionContext sc) {}
[javac] ^
[javac] E:\MostlyJava\j2eetutorial\examples\src\ejb\converter\ConverterHome.
java:12: cannot resolve symbol
[javac] symbol : class CreateException
[javac] location: package ejb
[javac] import javax.ejb.CreateException;
[javac] ^
[javac] E:\MostlyJava\j2eetutorial\examples\src\ejb\converter\ConverterHome.
java:13: cannot resolve symbol
[javac] symbol : class EJBHome
[javac] location: package ejb
[javac] import javax.ejb.EJBHome;
[javac] ^
[javac] E:\MostlyJava\j2eetutorial\examples\src\ejb\converter\ConverterHome.
java:15: cannot resolve symbol
[javac] symbol : class EJBHome
[javac] location: interface ConverterHome
[javac] public interface ConverterHome extends EJBHome {
[javac] ^
[javac] E:\MostlyJava\j2eetutorial\examples\src\ejb\converter\ConverterHome.
java:17: cannot resolve symbol
[javac] symbol : class CreateException
[javac] location: interface ConverterHome
[javac] Converter create() throws RemoteException, CreateException;
[javac] ^
[javac] 10 errors
BUILD FAILED
E:\MostlyJava\j2eetutorial\examples\build.xml:89: Compile failed, messages shoul
d have been provided.
Total time: 2 seconds
Thanks, for your reply the problem was with the classpath, even though it appears that the ant script points to it I had to set it in the environment.
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package chapter2;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.tagext.TagSupport;
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D:\Java\JDK 1.3\bin>javac HelloTag.java
HelloTag.java:3: cannot resolve symbol
symbol : class JspException
location: package jsp
import javax.servlet.jsp.JspException;
^
HelloTag.java:4: cannot resolve symbol
symbol : class JspTagException
location: package jsp
import javax.servlet.jsp.JspTagException;
^
HelloTag.java:5: cannot resolve symbol
symbol : class TagSupport
location: package tagext
import javax.servlet.jsp.tagext.TagSupport;
^
HelloTag.java:7: cannot resolve symbol
symbol : class TagSupport
location: class chapter2.HelloTag
public class HelloTag extends TagSupport
^
HelloTag.java:14: cannot resolve symbol
symbol : class JspException
location: class chapter2.HelloTag
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^
HelloTag.java:20: cannot resolve symbol
symbol : variable pageContext
location: class chapter2.HelloTag
pageContext.getOut().print("Hello");
^
HelloTag.java:24: cannot resolve symbol
symbol : class JspTagException
location: class chapter2.HelloTag
throw new JspTagException(e.getMessage());
^
HelloTag.java:28: cannot resolve symbol
symbol : variable SKIP_BODY
location: class chapter2.HelloTag
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^
HelloTag.java:37: cannot resolve symbol
symbol : variable super
location: class chapter2.HelloTag
super.release();
^
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Incidentally, you've bumped into one of the areas Java's slightly lenient - declaring a method that looks like a constructor:
public HelloTag() { }
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Thanks for the advice Kitty, that was the command I
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update my classpath and the path variables like you
mentioned, but I am still recieving the same error
message. I just cannot figure out where the error in
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So to help you clarify thing a bit...
Let's start here...
This error below...
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'javac' is not recognized as an internal or external command,
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if you type path at the command prompt you will see what your "System" path is, which would include an entry that would point to you sdk, something like "C:\YourJavaSDKFolder\bin";C:\someotherprogramfolder;
This path has nothing to do with the classpath. Your system uses this path to find executables to run you programs ( although many are locations are actually in your registry an therefore no path entry is needed... i.e. MS Word )...
This error...
C:\myfolder\test>javac VariableDemo.java
error: cannot read: VariableDemo.java
1 errormeans that your compiler was not able to locate your *.java file. I was able to replicate because VariableDemo.java does not exist on my machine, so javac.exe naturally could not find the *.java file...
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Here is how I classpathed it:
path
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import java.awt.event.*;
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import javax.swing.event.*;
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using
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//Written by:Seamus McFadden
//Class:CP4B
//Program Number:1
//Program Name:Demo.java
//Description:
//Supervisor:Gerard McCloskey
import java.awt.*;//Contains all of the classes for creating user interfaces and for painting graphics and images
import java.awt.event.*;//Provides interfaces and classes for dealing with different types of events fired by AWT components
import javax.swing.*;//Provides a set of lightweight components that, to the maximum degree possible, work the same on all platforms
public class Demo extends JFrame{
public static void main(String[] args){
int choice=-1;//a variable of type int that is set to -1
choice=getChoice();//invokes the method getChoice()
if(choice!=0){
getSelected(choice);//invokes the method getSelected(choice)
}//end if
}//end main
public static int getChoice(){
String choice;//a variable of type string
int ch;//a variable of type int
choice=JOptionPane.showInputDialog(null,
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"2. Member Menu\n" +
"3. Rental Menu\n" +
"4. Media Menu\n" +
"5. Log Off\n\n" +
"Enter your choice");//asks the user for some input
ch=Integer.parseInt(choice);//a class that wraps a value of the primitive type int in an object
return ch;//a method that returns an integer value
}//end getChoice
public static void getSelected(int choice){
if(choice == 1) {
product();
}//end if
if(choice==2){
member();
}//end if
if(choice==3){
rental();
}//end if
if(choice==4){
media();
}//end if
if(choice==5){
LogOff logoff=new LogOff();
}//end if
else{
ErrorMessage error=new ErrorMessage();
}//end getSelected
public static void product(){
int productChoice=-1;//a variable of type int that is set to -1
productChoice=getProductChoice();//invokes the method getChoice()
if(productChoice!=0){
getProductSelected(productChoice);//invokes the method getSelected(choice)
}//end if
getChoice();
public static void member(){
int memberChoice=-1;//a variable of type int that is set to -1
memberChoice=getMemberChoice();//invokes the method getChoice()
if(memberChoice!=0){
getMemberSelected(memberChoice);//invokes the method getSelected(choice)
}//end if
getChoice();
public static void rental(){
int rentalChoice=-1;//a variable of type int that is set to -1
rentalChoice=getRentalChoice();//invokes the method getChoice()
if(rentalChoice!=0){
getRentalSelected(rentalChoice);//invokes the method getSelected(choice)
}//end if
getChoice();
public static void media(){
int mediaChoice=-1;//a variable of type int that is set to -1
mediaChoice=getMediaChoice();//invokes the method getChoice()
if(mediaChoice!=0){
getMediaSelected(mediaChoice);//invokes the method getSelected(choice)
}//end if
getChoice();
public static int getProductChoice(){
String productChoice;//a variable of type string
int pch;//a variable of type int
productChoice=JOptionPane.showInputDialog(null,
"1. Add product details\n" +
"2. View product details\n" +
"3. Edit product details\n" +
"4. Delete product details\n" +
"5. Return to main menu\n\n" +
"Enter your choice");//asks the user for some input
pch=Integer.parseInt(productChoice);//a class that wraps a value of the primitive type int in an object
return pch;//a method that returns an integer value
}//end getProductChoice
public static int getMemberChoice(){
String memberChoice;//a variable of type string
int mch;//a variable of type int
memberChoice=JOptionPane.showInputDialog(null,
"1. Add member details\n" +
"2. View member details\n" +
"3. Edit member details\n" +
"4. Delete member details\n" +
"5. Return to main menu\n\n" +
"Enter your choice");//asks the user for some input
mch=Integer.parseInt(memberChoice);//a class that wraps a value of the primitive type int in an object
return mch;//a method that returns an integer value
}//end getMemberChoice
public static int getRentalChoice(){
String rentalChoice;//a variable of type string
int rch;//a variable of type int
rentalChoice=JOptionPane.showInputDialog(null,
"1. Add rental details\n" +
"2. View rental details\n" +
"3. Edit rental details\n" +
"4. Delete rental details\n" +
"5. Return to main menu\n\n" +
"Enter your choice");//asks the user for some input
rch=Integer.parseInt(rentalChoice);//a class that wraps a value of the primitive type int in an object
return rch;//a method that returns an integer value
}//end getRentalChoice
public static int getMediaChoice(){
String mediaChoice;//a variable of type string
int mtch;//a variable of type int
mediaChoice=JOptionPane.showInputDialog(null,
"1. Listen to songs\n" +
"2. View movie previews\n" +
"3. View game previews\n" +
"4. Return to main menu\n\n" +
"Enter your choice");//asks the user for some input
mtch=Integer.parseInt(mediaChoice);//a class that wraps a value of the primitive type int in an object
return mtch;//a method that returns an integer value
}//end getMediaChoice
public static void getProductSelected(int productChoice){
if(productChoice==1){
addProducts();
}//end if
if(productChoice==2){
viewProducts();
}//end if
if(productChoice==3){
editProducts();
}//end if
if(productChoice==4){
deleteProducts();
}//end if
else{
ErrorMessage error=new ErrorMessage();
}//end getProductSelected
public static void getMemberSelected(int memberChoice){
if(memberChoice==1){
addMembers();
}//end if
if(memberChoice==2){
viewMembers();
}//end if
if(memberChoice==3){
editMembers();
}//end if
if(memberChoice==4){
deleteMembers();
}//end if
else{
ErrorMessage error=new ErrorMessage();
}//end getMemberSelected
public static void getRentalSelected(int rentalChoice){
if(rentalChoice==1){
addRentals();
}//end if
if(rentalChoice==2){
viewRentals();
}//end if
if(rentalChoice==3){
editRentals();
}//end if
if(rentalChoice==4){
deleteRentals();
}//end if
else{
ErrorMessage error=new ErrorMessage();
}//end getRentalSelected
public static void getMediaSelected(int mediaChoice){
if(mediaChoice==1){
hearSongs();
}//end if
if(mediaChoice==2){
viewMovies();
}//end if
if(mediaChoice==3){
viewGames();
}//end if
else{
ErrorMessage error=new ErrorMessage();
}//end getMediaSelected
public static void addProducts(){
ProductForm product=new ProductForm();
product.getInput();
product.setVisible(true);
public static void viewProducts(){
DatabaseTest tt=new DatabaseTest();
tt.setVisible(true);
public static void editProducts(){
ProductForm product=new ProductForm();
product.getInput();
product.setVisible(true);
public static void deleteProducts(){
ProductForm product=new ProductForm();
product.setVisible(true);
public static void addMembers(){
MemberForm member=new MemberForm();
member.getInput();
member.setVisible(true);
public static void viewMembers(){
DatabaseTest tt=new DatabaseTest();
tt.setVisible(true);
public static void editMembers(){
MemberForm member=new MemberForm();
member.getInput();
member.setVisible(true);
public static void deleteMembers(){
MemberForm member=new MemberForm();
member.setVisible(true);
public static void addRentals(){
RentalForm rental=new RentalForm();
rental.getInput();
rental.setVisible(true);
public static void viewRentals(){
DatabaseTest tt=new DatabaseTest();
tt.setVisible(true);
public static void editRentals(){
RentalForm rental=new RentalForm();
rental.getInput();
rental.setVisible(true);
public static void deleteRentals(){
RentalForm rental=new RentalForm();
rental.setVisible(true);
public static void hearSongs(){
MediaTest media=new Media();
public static void viewMovies(){
MediaTest media=new Media();
public static void viewGames(){
MediaTest media=new Media();
}//end class Demo
import java.awt.BorderLayout;
import java.awt.Component;
import java.io.IOException;
import java.net.URL;
import javax.media.CannotRealizeException;
import javax.media.Manager;
import javax.media.NoPlayerException;
import javax.media.Player;
import javax.swing.JPanel;
public class MediaPanel extends JPanel{
public MediaPanel(URL mediaURL){
setLayout(new BorderLayout());//use a BorderLayout
//Use lightweight components for Swing compatibility
Manager.setHint(Manager.LIGHTWEIGHT_RENDERER,true);
try{
//create a player to play the media specified in the URL
Player mediaPlayer=Manager.createRealizedPlayer(mediaURL);
//get the components for the video and the playback controls
Component video=mediaPlayer.getVisualComponent();
Component controls=mediaPlayer.getControlPanelComponent();
if(video!=null)
add(video,BorderLayout.CENTER);//add video component
if(controls!=null)
add(controls,BorderLayout.SOUTH);//add controls
mediaPlayer.start();//start playing the media clip
}//end try
catch(NoPlayerException noPlayerException){
System.err.println("No media player found");
}//end catch
catch(CannotRealizeException cannotRealizeException){
System.err.println("Could not realize media player");
}//end catch
catch(IOException iOException){
System.err.println("Error reading from the source");
}//end catch
}//end MediaPanel constructor
}//end class MediaPanel
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
public class MediaTest{
//launch the application
public static void main(String args[]){
//create a file chooser
JFileChooser fileChooser=new JFileChooser();
//show open file dialog
int result=fileChooser.showOpenDialog(null);
if(result==JFileChooser.APPROVE_OPTION){//user chose a file
URL mediaURL=null;
try{
//get the file as URL
mediaURL=fileChooser.getSelectedFile().toURL();
}//end try
catch(MalformedURLException malformedURLException){
System.err.println("Could not create URL for the file");
}//end catch
if(mediaURL!=null) {//only display if there is a valid URL
JFrame mediaTest=new JFrame("Media Tester");
mediaTest.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
MediaPanel mediaPanel=new MediaPanel(mediaURL);
mediaTest.add(mediaPanel);
mediaTest.setSize(300,300);
mediaTest.setVisible(true);
}//end inner if
}//end outer if
}//end main
}//end class MediaTesthello.
this is james mcfadden. thanks for the reply. i did what you told me to do, but i am still having trouble trying to use the 2 JMF programs (MediaPanel.java and MediaTest.java) with the Demo.java program. the Demo.java program compiles and runs ok, but when i press 1 (for listening to songs) in the media menu i get a JOptionPane (An Error Message) displayed on screen. how can i fix this problem?
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Demo extends JFrame{
public static void main(String[] args){
int choice=-1;//a variable of type int that is set to -1
choice=getChoice();//invokes the method getChoice()
if(choice!=0){
getSelected(choice);//invokes the method getSelected(choice)
}//end if
}//end main
public static int getChoice(){
String choice;//a variable of type string
int ch;//a variable of type int
choice=JOptionPane.showInputDialog(null,
"1. Product Menu\n" +
"2. Member Menu\n" +
"3. Rental Menu\n" +
"4. Media Menu\n" +
"5. Log Off\n\n" +
"Enter your choice");//asks the user for some input
ch=Integer.parseInt(choice);//a class that wraps a value of the primitive type int in an object
return ch;//a method that returns an integer value
}//end getChoice
public static void getSelected(int choice){
if(choice == 1) {
product();
}//end if
if(choice==2){
member();
}//end if
if(choice==3){
rental();
}//end if
if(choice==4){
media();
}//end if
if(choice==5){
LogOff logoff=new LogOff();
}//end if
else{
JOptionPane.showMessageDialog(null,"Error\n\nInvalid options\nPlease choose 1, 2, 3, 4 or 5 on the main menu\nPlease choose 1, 2, 3, 4 or 5 on the product menu\nPlease choose 1, 2, 3, 4 or 5 on the member menu\nPlease choose 1, 2, 3, 4 or 5 on the rental menu\nPlease choose 1, 2, 3 or 4 on the media menu");
System.exit(0);
}//end getSelected
public static void product(){
int productChoice=-1;//a variable of type int that is set to -1
productChoice=getProductChoice();//invokes the method getChoice()
if(productChoice!=0){
getProductSelected(productChoice);//invokes the method getSelected(choice)
}//end if
getChoice();
public static void member(){
int memberChoice=-1;//a variable of type int that is set to -1
memberChoice=getMemberChoice();//invokes the method getChoice()
if(memberChoice!=0){
getMemberSelected(memberChoice);//invokes the method getSelected(choice)
}//end if
getChoice();
public static void rental(){
int rentalChoice=-1;//a variable of type int that is set to -1
rentalChoice=getRentalChoice();//invokes the method getChoice()
if(rentalChoice!=0){
getRentalSelected(rentalChoice);//invokes the method getSelected(choice)
}//end if
getChoice();
public static void media(){
int mediaChoice=-1;//a variable of type int that is set to -1
mediaChoice=getMediaChoice();//invokes the method getChoice()
if(mediaChoice!=0){
getMediaSelected(mediaChoice);//invokes the method getSelected(choice)
}//end if
getChoice();
public static int getProductChoice(){
String productChoice;//a variable of type string
int pch;//a variable of type int
productChoice=JOptionPane.showInputDialog(null,
"1. Add product details\n" +
"2. View product details\n" +
"3. Edit product details\n" +
"4. Delete product details\n" +
"5. Return to main menu\n\n" +
"Enter your choice");//asks the user for some input
pch=Integer.parseInt(productChoice);//a class that wraps a value of the primitive type int in an object
return pch;//a method that returns an integer value
}//end getProductChoice
public static int getMemberChoice(){
String memberChoice;//a variable of type string
int mch;//a variable of type int
memberChoice=JOptionPane.showInputDialog(null,
"1. Add member details\n" +
"2. View member details\n" +
"3. Edit member details\n" +
"4. Delete member details\n" +
"5. Return to main menu\n\n" +
"Enter your choice");//asks the user for some input
mch=Integer.parseInt(memberChoice);//a class that wraps a value of the primitive type int in an object
return mch;//a method that returns an integer value
}//end getMemberChoice
public static int getRentalChoice(){
String rentalChoice;//a variable of type string
int rch;//a variable of type int
rentalChoice=JOptionPane.showInputDialog(null,
"1. Add rental details\n" +
"2. View rental details\n" +
"3. Edit rental details\n" +
"4. Delete rental details\n" +
"5. Return to main menu\n\n" +
"Enter your choice");//asks the user for some input
rch=Integer.parseInt(rentalChoice);//a class that wraps a value of the primitive type int in an object
return rch;//a method that returns an integer value
}//end getRentalChoice
public static int getMediaChoice(){
String mediaChoice;//a variable of type string
int mtch;//a variable of type int
mediaChoice=JOptionPane.showInputDialog(null,
"1. Listen to songs\n" +
"2. View movie previews\n" +
"3. View game previews\n" +
"4. Return to main menu\n\n" +
"Enter your choice");//asks the user for some input
mtch=Integer.parseInt(mediaChoice);//a class that wraps a value of the primitive type int in an object
return mtch;//a method that returns an integer value
}//end getMediaChoice
public static void getProductSelected(int productChoice){
if(productChoice==1){
addProducts();
}//end if
if(productChoice==2){
viewProducts();
}//end if
if(productChoice==3){
editProducts();
}//end if
if(productChoice==4){
deleteProducts();
}//end if
else{
JOptionPane.showMessageDialog(null,"Error\n\nInvalid options\nPlease choose 1, 2, 3, 4 or 5 on the main menu\nPlease choose 1, 2, 3, 4 or 5 on the product menu\nPlease choose 1, 2, 3, 4 or 5 on the member menu\nPlease choose 1, 2, 3, 4 or 5 on the rental menu\nPlease choose 1, 2, 3 or 4 on the media menu");
System.exit(0);
}//end getProductSelected
public static void getMemberSelected(int memberChoice){
if(memberChoice==1){
addMembers();
}//end if
if(memberChoice==2){
viewMembers();
}//end if
if(memberChoice==3){
editMembers();
}//end if
if(memberChoice==4){
deleteMembers();
}//end if
else{
JOptionPane.showMessageDialog(null,"Error\n\nInvalid options\nPlease choose 1, 2, 3, 4 or 5 on the main menu\nPlease choose 1, 2, 3, 4 or 5 on the product menu\nPlease choose 1, 2, 3, 4 or 5 on the member menu\nPlease choose 1, 2, 3, 4 or 5 on the rental menu\nPlease choose 1, 2, 3 or 4 on the media menu");
System.exit(0);
}//end getMemberSelected
public static void getRentalSelected(int rentalChoice){
if(rentalChoice==1){
addRentals();
}//end if
if(rentalChoice==2){
viewRentals();
}//end if
if(rentalChoice==3){
editRentals();
}//end if
if(rentalChoice==4){
deleteRentals();
}//end if
else{
JOptionPane.showMessageDialog(null,"Error\n\nInvalid options\nPlease choose 1, 2, 3, 4 or 5 on the main menu\nPlease choose 1, 2, 3, 4 or 5 on the product menu\nPlease choose 1, 2, 3, 4 or 5 on the member menu\nPlease choose 1, 2, 3, 4 or 5 on the rental menu\nPlease choose 1, 2, 3 or 4 on the media menu");
System.exit(0);
}//end getRentalSelected
public static void getMediaSelected(int mediaChoice){
if(mediaChoice==1){
hearSongs();
}//end if
if(mediaChoice==2){
viewMovies();
}//end if
if(mediaChoice==3){
viewGames();
}//end if
else{
JOptionPane.showMessageDialog(null,"Error\n\nInvalid options\nPlease choose 1, 2, 3, 4 or 5 on the main menu\nPlease choose 1, 2, 3, 4 or 5 on the product menu\nPlease choose 1, 2, 3, 4 or 5 on the member menu\nPlease choose 1, 2, 3, 4 or 5 on the rental menu\nPlease choose 1, 2, 3 or 4 on the media menu");
System.exit(0);
}//end getMediaSelected
public static void addProducts(){
ProductForm product=new ProductForm();
product.getInput();
product.setVisible(true);
public static void viewProducts(){
DatabaseTest tt=new DatabaseTest();
tt.setVisible(true);
public static void editProducts(){
ProductForm product=new ProductForm();
product.getInput();
product.setVisible(true);
public static void deleteProducts(){
ProductForm product=new ProductForm();
product.setVisible(true);
public static void addMembers(){
MemberForm member=new MemberForm();
member.getInput();
member.setVisible(true);
public static void viewMembers(){
DatabaseTest tt=new DatabaseTest();
tt.setVisible(true);
public static void editMembers(){
MemberForm member=new MemberForm();
member.getInput();
member.setVisible(true);
public static void deleteMembers(){
MemberForm member=new MemberForm();
member.setVisible(true);
public static void addRentals(){
RentalForm rental=new RentalForm();
rental.getInput();
rental.setVisible(true);
public static void viewRentals(){
DatabaseTest tt=new DatabaseTest();
tt.setVisible(true);
public static void editRentals(){
RentalForm rental=new RentalForm();
rental.getInput();
rental.setVisible(true);
public static void deleteRentals(){
RentalForm rental=new RentalForm();
rental.setVisible(true);
public static void hearSongs(){
MediaTest media=new MediaTest();
public static void viewMovies(){
MediaTest media=new MediaTest();
public static void viewGames(){
MediaTest media=new MediaTest();
}//end class Demo
import java.awt.BorderLayout;
import java.awt.Component;
import java.io.IOException;
import java.net.URL;
import javax.media.CannotRealizeException;
import javax.media.Manager;
import javax.media.NoPlayerException;
import javax.media.Player;
import javax.swing.JPanel;
public class MediaPanel extends JPanel{
public MediaPanel(URL mediaURL){
setLayout(new BorderLayout());//use a BorderLayout
//Use lightweight components for Swing compatibility
Manager.setHint(Manager.LIGHTWEIGHT_RENDERER,true);
try{
//create a player to play the media specified in the URL
Player mediaPlayer=Manager.createRealizedPlayer(mediaURL);
//get the components for the video and the playback controls
Component video=mediaPlayer.getVisualComponent();
Component controls=mediaPlayer.getControlPanelComponent();
if(video!=null)
add(video,BorderLayout.CENTER);//add video component
if(controls!=null)
add(controls,BorderLayout.SOUTH);//add controls
mediaPlayer.start();//start playing the media clip
}//end try
catch(NoPlayerException noPlayerException){
System.err.println("No media player found");
}//end catch
catch(CannotRealizeException cannotRealizeException){
System.err.println("Could not realize media player");
}//end catch
catch(IOException iOException){
System.err.println("Error reading from the source");
}//end catch
}//end MediaPanel constructor
}//end class MediaPanel
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
public class MediaTest{
//launch the application
public static void main(String args[]){
//create a file chooser
JFileChooser fileChooser=new JFileChooser();
//show open file dialog
int result=fileChooser.showOpenDialog(null);
if(result==JFileChooser.APPROVE_OPTION){//user chose a file
URL mediaURL=null;
try{
//get the file as URL
mediaURL=fileChooser.getSelectedFile().toURL();
}//end try
catch(MalformedURLException malformedURLException){
System.err.println("Could not create URL for the file");
}//end catch
if(mediaURL!=null) {//only display if there is a valid URL
JFrame mediaTest=new JFrame("Media Tester");
mediaTest.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
MediaPanel mediaPanel=new MediaPanel(mediaURL);
mediaTest.add(mediaPanel);
mediaTest.setSize(300,300);
mediaTest.setVisible(true);
}//end inner if
}//end outer if
}//end main
}//end class MediaTest -
Problems compiling at91 driver for samutils-0.2.1
Hello All!
I'm having problems compiling the usb driver for sam7 tools. I am receiving the following errors:
make -C /lib/modules/2.6.39-ARCH/build SUBDIRS=/home/bailey/Source/sam7utils-0.2.1/driver modules
make[1]: Entering directory `/usr/src/linux-2.6.39-ARCH'
CC [M] /home/bailey/Source/sam7utils-0.2.1/driver/at91.o
/home/bailey/Source/sam7utils-0.2.1/driver/at91.c: In function âat91_write_bulk_callbackâ:
/home/bailey/Source/sam7utils-0.2.1/driver/at91.c:154:2: error: implicit declaration of function âusb_buffer_freeâ [-Werror=implicit-function-declaration]
/home/bailey/Source/sam7utils-0.2.1/driver/at91.c:140:19: warning: variable âdevâ set but not used [-Wunused-but-set-variable]
/home/bailey/Source/sam7utils-0.2.1/driver/at91.c: In function âat91_writeâ:
/home/bailey/Source/sam7utils-0.2.1/driver/at91.c:178:2: error: implicit declaration of function âusb_buffer_allocâ [-Werror=implicit-function-declaration]
/home/bailey/Source/sam7utils-0.2.1/driver/at91.c:178:6: warning: assignment makes pointer from integer without a cast [enabled by default]
/home/bailey/Source/sam7utils-0.2.1/driver/at91.c:192:6: warning: passing argument 6 of âusb_fill_bulk_urbâ from incompatible pointer type [enabled by default]
include/linux/usb.h:1266:20: note: expected âusb_complete_tâ but argument is of type âvoid (*)(struct urb *, struct pt_regs *)â
/home/bailey/Source/sam7utils-0.2.1/driver/at91.c: In function âat91_probeâ:
/home/bailey/Source/sam7utils-0.2.1/driver/at91.c:305:2: error: implicit declaration of function âinfoâ [-Werror=implicit-function-declaration]
/home/bailey/Source/sam7utils-0.2.1/driver/at91.c: In function âat91_disconnectâ:
/home/bailey/Source/sam7utils-0.2.1/driver/at91.c:320:2: error: implicit declaration of function âlock_kernelâ [-Werror=implicit-function-declaration]
/home/bailey/Source/sam7utils-0.2.1/driver/at91.c:328:2: error: implicit declaration of function âunlock_kernelâ [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
make[2]: *** [/home/bailey/Source/sam7utils-0.2.1/driver/at91.o] Error 1
make[1]: *** [_module_/home/bailey/Source/sam7utils-0.2.1/driver] Error 2
make[1]: Leaving directory `/usr/src/linux-2.6.39-ARCH'
make: *** [default] Error 2
output of uname -a
2.6.39-ARCH #1 SMP PREEMPT Mon Jun 27 22:01:13 CEST 2011 i686 Intel(R) Pentium(R) 4 CPU 1.50GHz GenuineIntel GNU/Linux
I am running gcc 4.6.1-1 and have installed kernel26headers. If there is any info I'm missing plz let me know.
Thanks for your help in advanceThank you for the reply, I noticed that the post below (its for Ubuntu) shows the gcc version to be 4.0.3
[link]http://www.makingthings.com/documentati … -sam7utils[/link]
I poked around the Makefile in /usr/src/linux-2.6.39 and got rid of "-Wall" and "-Wno-implicit-function-declaration"
it compiled with the following warnings:
make[1]: Entering directory `/usr/src/linux-2.6.39-ARCH'
Building modules, stage 2.
MODPOST 1 modules
WARNING: "info" [/home/bailey/Source/sam7utils-0.2.1/driver/at91.ko] undefined!
WARNING: "unlock_kernel" [/home/bailey/Source/sam7utils-0.2.1/driver/at91.ko] undefined!
WARNING: "lock_kernel" [/home/bailey/Source/sam7utils-0.2.1/driver/at91.ko] undefined!
WARNING: "usb_buffer_alloc" [/home/bailey/Source/sam7utils-0.2.1/driver/at91.ko] undefined!
WARNING: "usb_buffer_free" [/home/bailey/Source/sam7utils-0.2.1/driver/at91.ko] undefined!
CC /home/bailey/Source/sam7utils-0.2.1/driver/at91.mod.o
LD [M] /home/bailey/Source/sam7utils-0.2.1/driver/at91.ko
make[1]: Leaving directory `/usr/src/linux-2.6.39-ARCH'
but when I tried to install, the output was
insmod: error inserting 'at91.ko': -1 Unknown symbol in module
Unfortunately, I tried grabbing the package from the AUR, but I ran into the same issues. Seems the only common factor in this process is gcc.
Thanks for the help -
I am having problems gettting my mail to work ... Mac telling me that my start up disk id full and to delete some files to free up space ... have done this but when i open mail from the dock it just brings up the colour wheel and nothing happening ... it shows when you right click on the mail icon that " application not responding"
If your hard drive is getting full, you need to free up, at least, 20 GBs of space on your iMac's hard drive.
If your Mac is running a fairly recent version of OS X, here are some general guidelines.
Follow some of my tips for cleaning out, deleting and archiving data from your Mac's internal hard drive.
Have you emptied your iMac's Trash icon in the Dock?
If you use iPhoto, iPhoto has its own trash that needs to be emptied, also.
If you use Apple Mail app, Apple Mail also has its own trash area that needs to be emptied, too!
Other things you can do to gain space.
Delete any old or no longer needed emails and/or archive to disc, flash drives or external hard drive, older emails you want to save.
Look through your Documents folder and delete any type of old useless type files like "Read Me" type files.
Again, archive to disc, flash drives, ext. hard drives or delete any old documents you no longer use or immediately need.
Download an app called OnyX for your version of OS X.
When you install and launch it, let it run the automatic ans S.M,A.R.T. tests, then go to the cleaning and maintenance tabs and run the tabs that have the ability to clean out all web browser cache files, web browser histories, system cache files, delete old error log files.
Typically, iTunes and iPhoto libraries are the biggest users of HD space.
move these files/data off of your internal drive to the external hard drive and deleted off of the internal hard drive.
If you have any other large folders of personal data or projects, these should be archived or moved, also, to the optical discs, flash drives or external hard drive and then either archived to disc and/or deleted off your internal hard drive.
Good Luck!
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