Below is the code, Spent Hour trying to track where is error...
Code is much big... more then 45 Fields so more confused
Exception is `java.lang.NullPointerException`
code is
String Scholno=getScholarNo();
ScholarNo.setText(Scholno);
addstudent = cnn.prepareStatement ("Insert into student(
ScholarNo, Student_Name, Application_No, DateOfAdmission,
Fathers_Name, Gender, DOB, Address, Session, Contact_no, Email, Course,
Branch, Submitted_Documents, Nationality, GuardianName, GuardianContactNo,
GuardianAddress, High_School_name, HS_Year_of_passing, HS_Percentage,
HS_Board, Higher_secondary_Name, H_year_of_passing, H_percentage,
H_board, Graduation, G_year_of_passing, G_percentage, G_University,
Post_graduation, PG_year_of_passing, PG_percentage, PG_university,
mother_name, religion, category, semester, section, status,Photo) ;
values(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)");
addstudent.setString(1,ScholarNo.getText());
addstudent.setString(2,StudentName.getText().trim());
addstudent.setString(3,AdmissionNo.getText().trim());
addstudent.setString(4,DateOfAdmission.getDate().toString());
addstudent.setString(5,FatherName.getText().trim());
addstudent.setString(6,Gender.getSelectedItem().toString().trim());
addstudent.setString(7, DOB.getDate().toString());
addstudent.setString(8,Address.getText().trim());
addstudent.setString(9,Session.getSelectedItem().toString());
addstudent.setString(10,ContactNo.getText().trim());
addstudent.setString(11,Email.getText().trim());
addstudent.setString(12,Course.getSelectedItem().toString().trim());
addstudent.setString(13,Branch.getSelectedItem().toString().trim());
addstudent.setString(14,DocumentSubmitted.getText().trim());
addstudent.setString(15,Nationality.getText().trim());
addstudent.setString(16,GuardianName.getText().trim());
addstudent.setString(17,GuardianContactNo.getText().trim());
addstudent.setString(18,GuardianAddress.getText().trim());
addstudent.setString(19,HS.getText().trim());
addstudent.setString(20,HSYOP.getText().trim());
addstudent.setString(21,HSPercentage.getText().trim());
addstudent.setString(22,HSBoard.getText().trim());
addstudent.setString(23,HSS.getText().trim());
addstudent.setString(24,HSSYOP.getText().trim());
addstudent.setString(25,HSSPercentage.getText().trim());
addstudent.setString(26,HSSBoard.getText().trim());
addstudent.setString(27,UG.getSelectedItem().toString().trim());
addstudent.setString(28,GYOP.getText().trim());
addstudent.setString(29,GPercentage.getText().trim());
addstudent.setString(30,GUniy.getText().trim());
addstudent.setString(31,PG.getSelectedItem().toString().trim());
addstudent.setString(32,PGYOP.getText().trim());
addstudent.setString(33,PGpercentage.getText().trim());
addstudent.setString(34,PGUniy.getText().trim());
addstudent.setString(35,MotherName.getText().trim());
addstudent.setString(36,Religion.getSelectedItem().toString().trim());
addstudent.setString(37,Category.getSelectedItem().toString().trim());
addstudent.setString(38,Semester.getSelectedItem().toString().trim());
addstudent.setString(39,Section.getSelectedItem().toString().trim());
addstudent.setString(40,Status.getSelectedItem().toString().trim());
addstudent.setBytes(41,person_image);
addstudent.executeUpdate();
} catch(Exception e) {
//e.printStackTrace();
JOptionPane.showMessageDialog(null, e);
}
Result of Stack
run:
java.lang.NullPointerException
at projectmanagment.frmStudentRegistration.btnupdateActionPerformed(frmStudentRegistration.java:895)
at projectmanagment.frmStudentRegistration.btnupdateActionPerformed(frmStudentRegistration.java:895)
at projectmanagment.frmStudentRegistration.access$300(frmStudentRegistration.java:25)
at projectmanagment.frmStudentRegistration$4.actionPerformed(frmStudentRegistration.java:563)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6516)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3320)
at java.awt.Component.processEvent(Component.java:6281)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4872)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4698)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4698)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:708)
at java.awt.EventQueue$4.run(EventQueue.java:706)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
It got solved, error was regarding date which gave me null pointer Error, will post another Question for its answer so others are also benifited having same trouble
First time App work fine.But when I click "Speech" button for second time It make errors
java.lang.IllegalThreadStateException
at java.lang.Thread.start(Thread.java:684)
at com.sun.speech.freetts.jsapi.FreeTTSSynthesizer.handleAllocate(FreeTTSSynthesizer.java:98)
at com.sun.speech.engine.BaseEngine.allocate(BaseEngine.java:219)
at text2speech.GUI.speechFile(GUI.java:141)
at text2speech.GUI.jButton2ActionPerformed(GUI.java:159)
at text2speech.GUI.access$100(GUI.java:24)
at text2speech.GUI$2.actionPerformed(GUI.java:61)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:708)
at java.awt.EventQueue$4.run(EventQueue.java:706)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
Here is the code.
public void speechFile(){
String context=jTextArea1.getText();
try
{
System.setProperty("freetts.voices","com.sun.speech.freetts.en.us.cmu_us_kal.KevinVoiceDirectory");
Central.registerEngineCentral("com.sun.speech.freetts.jsapi.FreeTTSEngineCentral");
Synthesizer synthesizer =Central.createSynthesizer(new SynthesizerModeDesc(Locale.US));
synthesizer.allocate();
synthesizer.resume();
synthesizer.speakPlainText(context, null);
synthesizer.waitEngineState(Synthesizer.QUEUE_EMPTY);
synthesizer.deallocate();
}
catch(IllegalArgumentException e)
{
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (AudioException e) {
e.printStackTrace();
} catch (EngineException e) {
e.printStackTrace();
}
}
The thing I don't understand is first it work fine.second time it makes errors.How to fix this.
I don't know much about this library or technique, but to me it seems odd that you would register the engine once for each use, and odd that you wouldn't reuse an existing synthesizer.
Have you tried creating the synthesizer once and using it twice?
to make the code read more than once, all you have to do to remove the synth.deallocate(); from your code, then you will be able to loop till you want.
String filePath = "./results.txt";
// Use "dxdiag /t" variant to redirect output to a given file
ProcessBuilder pb = new ProcessBuilder("cmd.exe","/c","dxdiag","/t",filePath);
System.out.println("-- Executing dxdiag command --");
Process p = pb.start();
p.waitFor();
BufferedReader br = new BufferedReader(new FileReader(filePath));
String line;
System.out.println(String.format("-- Printing %1$1s info --",filePath));
while((line = br.readLine()) != null){
if(line.trim().startsWith("Card name:")
|| line.trim().startsWith("Current Mode:")
|| line.trim().startsWith("Display Memory:"))
textArea_3.append(line.trim() + "\n");
}
} catch (IOException ex) {
ex.printStackTrace();
} catch (InterruptedException ex) {
ex.printStackTrace();
}
The error that I get is
java.io.FileNotFoundException: .\results.txt (The system cannot find the file specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:138)
at java.io.FileInputStream.<init>(FileInputStream.java:97)
at java.io.FileReader.<init>(FileReader.java:58)
at gui.Gui$4.actionPerformed(Gui.java:136)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:723)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:682)
at java.awt.EventQueue$3.run(EventQueue.java:680)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:696)
at java.awt.EventQueue$4.run(EventQueue.java:694)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:693)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)
I've tried it on Win7 (does not work) and on Win8(it works as expected). If anyone has a thought on what's going on I'd greatly appreciate the help, thx.
It seems to be a relative path problem. I'd recommend trying to add the line System.out.println(new File(filePath).getAbsolutePath()); before instantiating the buffered reader to see where exactly the system tries to look for the results file. You might also want to specify the output location for DXDIAG as an absolute path to ensure the results are stored where you want them to.
1st complete your code your class name missing.
2nd give main method public static void main(String args[]).
3rd take try block.
And 4th last one create TextArea object which is missing in your code :TextArea textArea_3 = new TextArea();
Code will work.
I'm trying to run my simple java-program, but have a big problem.
It's connected with GUI. It can not show any created window. I attach stack-trace and one class.
#ConvertAsProperties(
dtd = "-//org.shop.viewer//ShopViewer//EN",
autostore = false
)
#TopComponent.Description(
preferredID = "ShopViewerTopComponent",
//iconBase="SET/PATH/TO/ICON/HERE",
persistenceType = TopComponent.PERSISTENCE_ALWAYS
)
#TopComponent.Registration(mode = "explorer", openAtStartup = false)
#ActionID(category = "Window", id = "org.shop.viewer.ShopViewerTopComponent")
#ActionReference(path = "Menu/Window" /*, position = 333 */)
#TopComponent.OpenActionRegistration(
displayName = "#CTL_ShopViewerAction",
preferredID = "ShopViewerTopComponent"
)
#Messages({
"CTL_ShopViewerAction=ShopViewer",
"CTL_ShopViewerTopComponent=ShopViewer Window",
"HINT_ShopViewerTopComponent=This is a ShopViewer window"
})
public final class ShopViewerTopComponent extends TopComponent {
public ShopViewerTopComponent() {
initComponents();
setName(Bundle.CTL_ShopViewerTopComponent());
setToolTipText(Bundle.HINT_ShopViewerTopComponent());
EntityManager entityManager = Persistence.createEntityManagerFactory("ShopLibraryPU").createEntityManager();
Query query = entityManager.createNamedQuery("Shops.findAll");
List<Shops> resultList = query.getResultList();
for (Shops c : resultList) {
jTextArea1.append(c.getTitle() +"dqwdqwdqwdqwd"+ "\n");
}
}
java.lang.IllegalStateException: Cannot find TopComponent with preferredID ShopViewerTopComponent, see IDE log for more details.
at org.openide.windows.OpenComponentAction.actionPerformed(OpenComponentAction.java:91)
at org.openide.awt.AlwaysEnabledAction$1.run(AlwaysEnabledAction.java:198)
at org.openide.util.actions.ActionInvoker$1.run(ActionInvoker.java:95)
at org.openide.util.actions.ActionInvoker.doPerformAction(ActionInvoker.java:116)
at org.openide.util.actions.ActionInvoker.invokeAction(ActionInvoker.java:99)
at org.openide.awt.AlwaysEnabledAction.actionPerformed(AlwaysEnabledAction.java:201)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.AbstractButton.doClick(AbstractButton.java:376)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:833)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:877)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:708)
at java.awt.EventQueue$4.run(EventQueue.java:706)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
[catch] at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
I think that a misstake is in TopComponent-constructor.
Thanks a lot.
This problem "cannot find TopCoponent with preferredID..." happens frequently when a problem occurs before loading the TopComponent.
A simple example : you try to load something in the constructor that fails (at any depth).
This unexplicit message made me mad more than once !
Hope this helps.
Making a Swing application in which a user selects an audio file using a radio button and plays it using the Play button. The GUI class call the method from a custom audio handler class. The audio files are in a package called audio. The following errors are thrown after sound selection and the user clicks the Play button:
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at sun.audio.AudioStream.<init>(AudioStream.java:63)
at my.quotesbutton.Player.fear(Player.java:18)
at my.quotesbutton.QuotesButtonUI.jButton3ActionPerformed(QuotesButtonUI.java:221)
at my.quotesbutton.QuotesButtonUI.access$000(QuotesButtonUI.java:16)
at my.quotesbutton.QuotesButtonUI$1.actionPerformed(QuotesButtonUI.java:66)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:708)
at java.awt.EventQueue$4.run(EventQueue.java:706)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
The GUI class code as follows:
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
if (jRadioButton1.isSelected()){
Player play = new Player();
try {
play.fear();
} catch (IOException ex) {
Logger.getLogger(QuotesButtonUI.class.getName()).log(Level.SEVERE, null, ex);
}
}
else if (jRadioButton2.isSelected()){
}
else if (jRadioButton3.isSelected()){
}
else if (jRadioButton4.isSelected()){
}
else if (jRadioButton5.isSelected()){
}
else if (jRadioButton6.isSelected()){
}
else {
}
}
private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {
System.exit(0);
}
The code for the audio handler class as follows:
package my.quotesbutton;
import java.io.*;
import sun.audio.AudioPlayer;
import sun.audio.AudioStream;
public class Player{
public void fear() throws IOException{
InputStream inputStream = getClass().getResourceAsStream("audio\\fear.wav");
AudioStream audioStream = new AudioStream(inputStream);
AudioPlayer.player.start(audioStream);
}
}
It seems like you are passing null to the AudioStream constructor. The value you pass it is obtained via getClass().getResourceAsStream().
From Java Class javadoc:
public InputStream getResourceAsStream(String name)
...
Returns:
A InputStream object or null if no resource with this name is found
So, the way this could return null is that the file is not found. The problem is in your file path. The path you are passing is relative. Try finding where your application's work directory is and correct the path relative to it.
EDIT: You can get the working directory via System.getProperty("user.dir").