How to make a simple Pc Speaker sound output?

Hello,
how can a make a simple PC Speaker sound output like the standard beep for errormessages?
Can anybody help me?
Thanks,
Alex

Use this:Toolkit.getDefaultToolkit().beep(); or this: System.out.print("\0007");
System.out.flush();

Similar Messages

JDialog Problem: How to make a simple "About" dialog box?

Hi, anyone can try me out the problem, how to make a simple "About" dialog box? I try to click on the MenuBar item, then request it display a JDialog, how? Following is my example code, what wrong code inside?
** Main.java**
============================
publc class Main extends JFrame{
public Main() {
          super();
          setJMenuBar();
          initialize();
public void setJMenuBar()
     JMenuBar menubar = new JMenuBar();
        setJMenuBar(menubar);
        JMenu menu1 = new JMenu("File");
        JMenuItem item = new JMenuItem("About");
        item.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ae) {
              // About about = new About(this);
           // about.show();
        menu1.add(item);
     menubar.add(menu1);
public static void main(String args[]){
     Main main = new Main();
}** About.java**
=============================
import java.awt.*;
import javax.swing.*;
public class About extends JDialog{
     JPanel jp_top, jp_center, jp_bottom;
     public About(JFrame owner){
          super(owner);
          setDefaultCloseOperation( DISPOSE_ON_CLOSE );
          Image img = Toolkit.getDefaultToolkit().getImage(DateChooser.class.getResource("Duke.gif"));
          setIconImage( img );
          setSize(500,800);
          Container contentPane = getContentPane();
         contentPane.setLayout(new BorderLayout());
         contentPane.add(getTop(), BorderLayout.NORTH);
          contentPane.add(getCenter(), BorderLayout.CENTER);
          contentPane.add(getBottom(), BorderLayout.SOUTH);
          setResizable(false);
           pack();
           setVisible(true);
     public JPanel getTop(){
          jp_top = new JPanel();
          return jp_top;
     public JPanel getCenter(){
          jp_center = new JPanel();
          return jp_center;
     public JPanel getBottom(){
          jp_bottom = new JPanel();
          jp_bottom.setLayout(new BoxLayout(jp_bottom, BoxLayout.X_AXIS));
          JButton jb = new JButton("OK");
          jp_bottom.add(jb);
          return jp_bottom;
}

Code looks reasonable except
a) the code in the actionPerformed is commment out
b) the owner of the dialog should be the frame
If you need further help then you need to create a "Short, Self Contained, Compilable and Executable, Example Program (SSCCE)",
see http://homepage1.nifty.com/algafield/sscce.html,
that demonstrates the incorrect behaviour, because I can't guess exactly what you are doing based on the information provided.

How to make a simple Quiz?

Could anyone help me with some hints and maybe sample code (or tutorial :)) how to make a simple quiz, with multiple
answers choices, and a score function.
//D

You could for example do it like this:
import java.io.*;
class Quiz
public static void main (String [] args)
BufferedReader in = new BufferedReader (new InputStreamReader(System.in));
System.out.println("SUPERQUIZ");
System.out.println("How many legs does a horse have?");
System.out.println();
System.out.println("1");
System.out.println("2");
System.out.println("3");
System.out.println("4");
int answer = Integer.parseInt(in.readLine());
if (answer == 4)
System.out.println("The answer is correct");
else
System.out.println("The answer is incorrect");
This is just a basic program, hope you understand it (hopefully it works).
�sbj�rn

How to make a row as selected in output internal table in oops ALV

Hi All,
I have ALV grid output using oops ALV concept, in my output i have a checkbox as first column when i select this checkbox and press a push button 'Print' which is there above ALV grid that particular line in output table should get selected and i need to code some logic for printing selected row.
how to make the particluar row in the output internal table to be selected and where to write the logic for print once it is pressed?
Thanks in advance
Srilakshmi.

but the checkbox is not getting set in internal table when i select some checkboxes.
can anybody explain y the checkbox in internal table not set?
Hi Srilakshmi,
As explained by Uwe, when we change a field ( say check box ) in ALV grid, the view (frontend) changes (showing the tick mark) but the changed data ( normally ) is not transfered to the backend.
We can initiate this data transfer by just registering the cl_gui_alv_grid=>mc_evt_modified edit event
go_grid->set_table_for_first_display( CHANGING it_fieldcatalog      = pt_fieldcat
                                                  it_outtab            = pt_outtab ).
go_grid->set_ready_for_input( 1 ).
go_grid->register_edit_event( EXPORTING i_event_id = cl_gui_alv_grid=>mc_evt_modified ). " This does the trick
Now as soon as we check a checkbox, the data_changed event is triggered.
This initiates data transfer to the backend and the checkbox field in internal table is updated.
check the below code for example.
DATA: go_cont            TYPE REF TO cl_gui_custom_container,
      go_grid            TYPE REF TO cl_gui_alv_grid,
      gt_fieldcat        TYPE lvc_t_fcat,
      gv_language        TYPE spras VALUE 'E',
      gt_outtab          TYPE TABLE OF bus_loca_demo WITH HEADER LINE.
START-OF-SELECTION.
CALL SCREEN 100.
*       MODULE PBO OUTPUT                                             *
MODULE pbo OUTPUT.
SET PF-STATUS 'BASIC'.
SET TITLEBAR '001'.
PERFORM create_and_init_alv CHANGING gt_outtab[]
                                       gt_fieldcat.
ENDMODULE.                    "pbo OUTPUT
*       MODULE PAI INPUT                                              *
MODULE pai INPUT.
CASE sy-ucomm.
    WHEN 'BACK'.
      SET SCREEN 0. LEAVE SCREEN.
    WHEN 'PRINT'.
      BREAK-POINT.
ENDCASE.
ENDMODULE.                    "pai INPUT
FORM create_and_init_alv CHANGING pt_outtab LIKE gt_outtab[]
                                  pt_fieldcat TYPE lvc_t_fcat.
CHECK go_cont IS NOT BOUND.
CREATE OBJECT go_cont
    EXPORTING
      container_name = 'CUSTOM'.
CREATE OBJECT go_grid
    EXPORTING
      i_parent = go_cont.
PERFORM build_display_table.
PERFORM build_fieldcat CHANGING pt_fieldcat.
go_grid->set_table_for_first_display( CHANGING it_fieldcatalog      = pt_fieldcat
                                                  it_outtab            = pt_outtab ).
go_grid->set_ready_for_input( 1 ).
go_grid->register_edit_event( EXPORTING i_event_id = cl_gui_alv_grid=>mc_evt_modified ). " This does the trick
ENDFORM.                               "CREATE_AND_INIT_ALV
FORM build_display_table.
FREE gt_outtab.
DO 10 TIMES.
    gt_outtab-creation_partner = sy-index.
    gt_outtab-date_field       = sy-datum.
    APPEND gt_outtab.
ENDDO.
ENDFORM.                               "build_display_table
FORM build_fieldcat CHANGING pt_fieldcat TYPE lvc_t_fcat.
DATA ls_fcat TYPE lvc_s_fcat.
CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'
    EXPORTING
      i_structure_name = 'BUS_LOCA_DEMO'
    CHANGING
      ct_fieldcat      = pt_fieldcat.
LOOP AT pt_fieldcat INTO ls_fcat.
    CASE ls_fcat-fieldname.
      WHEN 'CHECKBOX'.
        ls_fcat-checkbox = 'X'.
        ls_fcat-edit     = abap_true.
        MODIFY pt_fieldcat FROM ls_fcat.
      WHEN 'ENTER_FIELD' OR 'DBLCLICK_FIELD'.
        ls_fcat-no_out = abap_true.
        MODIFY pt_fieldcat FROM ls_fcat.
    ENDCASE.
ENDLOOP.
ENDFORM.                               "build_fieldcat
Cheers,
Jose.

How to make a Simple NIO Scalable Server?

I want to learn NIO for a project, but first want to start out simple. I want to figure out how to send a string across from clients to a server using NIO. I tried looking up stuff, but got caught in the terminology and such. How can I make a simple scalable server (agh tripple S) to send strings across? (like a chat server or something). All I know is I need to use a Selector and some Threaded loops to do stuff.
I found http://gee.cs.oswego.edu/dl/cpjslides/nio.pdf and tweaked the code to make (what I thought was) a simple server, but I do not know how to make client code or even whether or not my Server code works.
This is what I have so far:
import java.io.*;
import java.nio.*;
import java.nio.channels.*;
import java.nio.channels.spi.*;
import java.net.*;
import java.util.*;
import static java.lang.System.*;
public class NIOTest {
public static void main(String args[]) throws Throwable
try {
new Thread(new NIOTestServer()).start();
} catch(Exception e) {
e.printStackTrace();
class NIOTestServer implements Runnable
final Selector selector;
final ServerSocketChannel serverSocket;
int chatPort=9990;
public NIOTestServer() throws Exception
selector=Selector.open();
serverSocket = ServerSocketChannel.open();
serverSocket.socket().bind(
new InetSocketAddress(chatPort));
serverSocket.configureBlocking(false);
SelectionKey sk =
serverSocket.register(selector,
SelectionKey.OP_ACCEPT);
sk.attach(new Acceptor());
public void run()
try
while(!Thread.interrupted())
selector.select(); //Blocks until atleast one I/O event has occured
Iterator<SelectionKey> it=selector.selectedKeys().iterator();
while(it.hasNext())
dispatch(it.next());
catch(Throwable lol)
lol.printStackTrace();
void dispatch(SelectionKey k)
Runnable r = (Runnable)(k.attachment());
if (r != null)
r.run();
class Acceptor implements Runnable
{ // inner class to accept the event
public void run()
try
SocketChannel c = serverSocket.accept();
if (c != null)
new Handler(selector, c);
catch(IOException ex) {ex.printStackTrace();}
import java.io.*;
import java.nio.*;
import java.nio.channels.*;
import java.nio.channels.spi.*;
import java.net.*;
import java.util.*;
import static java.lang.System.*;
final class Handler implements Runnable {
final SocketChannel socket;
final SelectionKey sk;
ByteBuffer input = ByteBuffer.allocate(1024);
ByteBuffer output = ByteBuffer.allocate(1024);
static final byte READING = 0, SENDING = 1;
byte state = READING;
Handler(Selector sel, SocketChannel c) throws IOException
socket = c; c.configureBlocking(false); //makes it non blocking
// Optionally try first read now
sk = socket.register(sel, 0);
sk.attach(this);
sk.interestOps(SelectionKey.OP_READ);
sel.wakeup();
boolean inputIsComplete()
return input.hasRemaining();
boolean outputIsComplete()
return output.hasRemaining();
void process()
CharBuffer buf=input.asCharBuffer();
buf.flip();
out.println(buf);
public void run()
try {
if (state == READING) read();
else if (state == SENDING) send();
catch (IOException ex) { ex.printStackTrace(); }
void read() throws IOException
socket.read(input);
if (inputIsComplete())
process();
state = SENDING;
// Normally also do first write now
sk.interestOps(SelectionKey.OP_WRITE);
void send() throws IOException
socket.write(output);
if (outputIsComplete()) sk.cancel();
}again this is a rough incomplete code test.

See http://forum.java.sun.com/thread.jspa?forumID=536&threadID=5277053. You can use Telnet as a test client. When you come to write your own client, use java.net, not java.nio.

How to make a simple C program universal from the command line???

Hi all,
I've developed widgets that use a simple C program. I had no clue how to make it universal. Apple documentation is all about big projects to be developed inside Xcode and so on, but I don't understand even the introductory remarks...
As far as I've read, I have to make a binary for PPC and a binary for i386, and then merge it with lipo. Fine. I get my PPC binary from:
gcc-4.0 prog.c -o prog_ppc -lm -arch ppc -arch ppc64
Now, it seems that I have to use:
gcc-4.0 prog.c -o prog_i386 -lm -arch i386
The latter command didn't work until I added -L/Developer/SDKs/MacOSX10.4u.sdk/usr/lib/ at the end. With this, it creates a binary file, but with the following message:
/usr/bin/ld: warning fat file: /usr/lib/system/libmathCommon.A.dylib does not contain an architecture that matches the specified -arch flag: i386 (file ignored)
and I guess this is quite an issue if I don't have the common math functions, no?...
Can somebody help me? I googled a lot on this, and found nothing helpful.
Cédric

Thanks, it helped me. I googled a bit to build up my Makefile, and this is what I got.
CC= gcc-4.0
CFLAGS= -isysroot /Developer/SDKs/MacOSX10.4u.sdk -arch ppc -arch i386
LDFLAGS= -Wl,-syslibroot,/Developer/SDKs/MacOSX10.4u.sdk -lm
TARGETS= skycalc.fixed.c
all: $(TARGETS)
$(CC) $(TARGETS) $(CFLAGS) $(LDFLAGS) -o skycalc_universal
Thanks again.

How to make a simple control value comparison a user event?

Hey everyone,
I am trying (with no luck) to figure out how to make an event out of a simple control comparison without having to put the controls inside a while loop to be polled or in the event structure.
For example; how do I make an event when 'numerical control 1' equals 'numerical control 2'?
I know that I could have these inside a while loop with the event structure and then wire the comparison to a boolean, then reference the boolean's value change event. But rather, I would like to create an event for the comparison without the boolean and outside the while loop such that the loop doesn't have to run through the comparison each time, and doesn't have to poll the controls and bool.
Thanks for the help

Attached is a simple user event structure that I was thinking about. Using this you can decouple the control from the comparison, it just works on valye comparisons. Since it uses the event structure there is no polling and is very CPU friendly. I have allowedfor the comparison to be linked to the "Value 1:value change event" and the compare button true event. I hope this is what you were looking at. Also since it is a user event which is dynamically registered you can register/unregister it at will durring execution making it a flexable event handler. It might be alittle buggy because I have spent about 3 minutes developing it (particularry when passing values into the event structure there might be a state issue from the data flow so local variables are a better choice)
Paul
Paul Falkenstein
Coleman Technologies Inc.
CLA, CPI, AIA-Vision
Labview 4.0- 2013, RT, Vision, FPGA
Attachments:
CompareEventvi.vi ‏49 KB

How to make a simple poll

hi,all
I would like to make a simple poll in a page of an application,it only concludes two choices: yes and no.when i press the submit button I can see the percentage displayed as pie chart.how to do this ?any suggestions?

Hi,
Step 1: Create Table structure and trigger for Sequence. I have not give code to create Sequence. That you can create with DEMO_POLL_SEQ name
CREATE TABLE "DEMO_POLL"
(     "ID_PK" NUMBER,
     "RESULT" NUMBER,
     CONSTRAINT "DEMO_POLL_PK" PRIMARY KEY ("ID_PK") ENABLE
CREATE OR REPLACE TRIGGER "BI_DEMO_POLL"
before insert on "DEMO_POLL"
for each row
begin
if :NEW."ID_PK" is null then
select "DEMO_POLL_SEQ".nextval into :NEW."ID_PK" from dual;
end if;
end;
ALTER TRIGGER "BI_DEMO_POLL" ENABLE;
Step 2:
Create a new region on apex type Form with table and select "Result" column and make its type Radiogroup and create static lov
make sure after you create a region go to branch and put clear cache to the same page. so it clears the page item value.
Step 3:
Create another region with chart and paste following SQL query
SELECT NULL LINK,
REPLACE(REPLACE(RESULT,1,'YES'),0,'NO') LABEL,
COUNT(RESULT) VALUE
FROM DEMO_POLL
GROUP BY RESULT
ORDER BY RESULT
Hope this would workout for you.
And yes you can add me as in your friend list.
Thanks,
Jaydip Bosamiya,
+91 - 76000 23053
[http://jbosamiya.blogspot.com|http://jbosamiya.blogspot.com]

How to make a simple JPEG flash light to dark on PDF?

Hello all. Thank you for reading this.
Please have a look at this online magazine:
http://viewer.zmags.com/publication/1d272263#/1d272263/1
Notice how the "Click Here To Read" is flashing?
Well I'm wondering how do I create that effect? I'm sure it can't be as confusing as I'm trying to learn. Basically I'm creating a online magazine, and I want a JPG/PNG File to flash from dark to light. Is this an effect I add on Adobe InDesign before I convert my (rather large 1,500 page) magazine to a PDF? Or do I open this in Adobe Acrobat X as a PDF and tweak some setting there?
Or does this file have to be converted to a Shock-wave Flash file? Because I have NO EXPERIENCE in flash files, they seem so confusing.
Please help if you can!

Salah Fadlabi wrote:
Yes that correct
just export the page logo flashing to (SWF) than place again on indesign document to export with remaining pages to PDF.
Hello, thank you for your help. When I place the swf file onto the correct InDesign page, I upload it onto the page viewer online, but I see that rather large Flash icon. If you click on the image below you'll be able to see it. I've print screened it.
?1
Am I exporting it incorrectly? I've exported it as a interactive PDF.
EDIT: I may be confusing you, but this is my general process. I create a magazine. Export it as a PDF, and upload it on a pdf internet viewer called FlipViewer.
But now, some clients want certain pages/logos etc flashing. So now I need to figure out (for the next magazine that will be uploaded soon), how to make certain logos/badges etc flash. So when I follow your instructions, I upload it as a PDF, then when I open that PDF, I get that flash icon that says "...click to activate", when I click that, then the SWF effects appear over the document. But when I upload that PDF document to FlipViewer, it just appears as a unclickable link. And other magazines that have been uploaded on flipviwer has flashing logos, automatically when you open up the document. What am I doing incorrectly?
Thank you so much for your help!

How to make a simple animation within text area ?

Hi guys ,I am getting familiar with the Flash animations so I would appreciate a bit of help.
I am trying to make a simple animation within the text input area i.e.
1.FAN BASE
2.FA NBASE
What I want is the letter N to move slowly towards letter B.I have done motion tweening but it doesn't work - either the whole text is moving left right or the letter N is simply skipping to the second position without smooth animation.( there's no error on motion tween by the way) any ideas ?
Thanks.

best would be you would create your sentence "fanbase" and break down the single letters into objects by selecting the whole textfield and pressing CTRL+B, convert everyone of them into single movieclips or graphics and tween them accordingly.

How to make a simple form layout without ad RAD tool

I'm trying to make a simple form, but I'm not finding the right layout manager to make the components goes in Y axis. The BoxLayout could solve my problem, if it does not fill all the panel with the components.
My SCCEE:
public class TestSimpleForm extends JPanel {
    JLabel nameLbl = new JLabel("Name:");
    JTextField nameField = new JTextField();
    JButton okBtn = new JButton("OK");
    JButton cancelBtn = new JButton("Cancel");
    public TestSimpleForm() {
     add(nameLbl);
     add(nameField);
     add(okBtn);
     add(cancelBtn);
    public static void main(String[] args) {
     JPanel panel = new TestSimpleForm();
     // if i make it a boxlayout panel, the text field size goes huge
//     panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
     JFrame f = new JFrame();
     f.setContentPane(panel);
     f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     f.setSize(400, 600);
     f.setLocationRelativeTo(null);
     f.setVisible(true);
}

wellington7 wrote:
..My SCCEE:While I don't know what an SCCEE is, I am very familiar with the SSCCE, and..
public class TestSimpleForm extends JPanel {
.....this code is surely not an SSCCE.
Running tool: Java Compile
/media/disk/projects/numbered/all/TestSimpleForm.java:1: cannot find symbol
symbol: class JPanel
public class TestSimpleForm extends JPanel {
                                    ^
/media/disk/projects/numbered/all/TestSimpleForm.java:3: cannot find symbol
symbol : class JLabel
location: class TestSimpleForm
    JLabel nameLbl = new JLabel("Name:");
    ^
/media/disk/projects/numbered/all/TestSimpleForm.java:4: cannot find symbol
symbol : class JTextField
location: class TestSimpleForm
    JTextField nameField = new JTextField();
    ^
/media/disk/projects/numbered/all/TestSimpleForm.java:6: cannot find symbol
symbol : class JButton
location: class TestSimpleForm
    JButton okBtn = new JButton("OK");
    ^
/media/disk/projects/numbered/all/TestSimpleForm.java:7: cannot find symbol
symbol : class JButton
location: class TestSimpleForm
    JButton cancelBtn = new JButton("Cancel");
    ^
/media/disk/projects/numbered/all/TestSimpleForm.java:3: cannot find symbol
symbol : class JLabel
location: class TestSimpleForm
    JLabel nameLbl = new JLabel("Name:");
                         ^
/media/disk/projects/numbered/all/TestSimpleForm.java:4: cannot find symbol
symbol : class JTextField
location: class TestSimpleForm
    JTextField nameField = new JTextField();
                               ^
/media/disk/projects/numbered/all/TestSimpleForm.java:6: cannot find symbol
symbol : class JButton
location: class TestSimpleForm
    JButton okBtn = new JButton("OK");
                        ^
/media/disk/projects/numbered/all/TestSimpleForm.java:7: cannot find symbol
symbol : class JButton
location: class TestSimpleForm
    JButton cancelBtn = new JButton("Cancel");
                            ^
/media/disk/projects/numbered/all/TestSimpleForm.java:17: cannot find symbol
symbol : class JPanel
location: class TestSimpleForm
     JPanel panel = new TestSimpleForm();
     ^
/media/disk/projects/numbered/all/TestSimpleForm.java:22: cannot find symbol
symbol : class JFrame
location: class TestSimpleForm
     JFrame f = new JFrame();
     ^
/media/disk/projects/numbered/all/TestSimpleForm.java:22: cannot find symbol
symbol : class JFrame
location: class TestSimpleForm
     JFrame f = new JFrame();
                    ^
/media/disk/projects/numbered/all/TestSimpleForm.java:24: cannot find symbol
symbol : variable JFrame
location: class TestSimpleForm
     f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                                ^
13 errors
Exited: 256

How to make a simple 'press any key...'?

I need to make a simple statement that will pause the screen, until you hit any key or click the mouse? 'press any key to continue...'
is there a way to do it without any popup boxes?
thanks

System.in.read() will block until a key is hit (unfortunately the enter key counts produces 2 chars on windows...)
So my suggestion is:
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Press a key to continue....");
br.readLine();HTH,
Radish21

How to make a chat room with sound and video with java!

Please tell me how to make it!

Please tell me how to make it!I suggest you to employ some experienced programmers. Doing it by yourself seems impossible (judging from how you asked).
Another suggestion is, don't think to make an aeroplane if you don't have experience making a kite. Moral of the story: learn step by step, see java tutorial, explore its API especially the java.io and Threading.
No offence, I hope my suggestion is encouraging.
rgds,
Alex

How to make checkbox field inactive in the output of ALV report.

Dear All,
I am having one ALV report in whose output there are checkboxes against each record. Example: the output columns of my ALV report are:
Checkbox, Sales Document No, Billing Document No.
Now, my requirement is that if for the Sales Document No there exists any Billing Document No in the output then the Checkbox should be inactive but if the Billing document coloumn is empty for a particular Sales Document No then only the Checkbox field should become active.
Kindly guide me on how to make this checkbox field inactive.
Waiting for your reply.
Warm Regards,
N.Jain

Hello,
Follow the below steps:
1.Define as--> GS_STATUS TYPE SLIS_STATUS,
2.check layout check box fieldname is not initial.
then set the status according to your logical conditions
GS_STATUS-FLG_CHECKBOXES_ACTIVE = 'X'
Hope this would help you.
Let me know your feedback.
Regards,
Raju

How to use Airport Express as a sound output device

Guys,
Is there a way that I can use Airport Express as a sound output device? So, I can play all the sound on my HIFI.
thanks in advance

In order to listen to the non-iTunes audio streams through your Airport Express you will need to use the third party software Airfoil.
http://www.rogueamoeba.com/airfoil/
iFelix

How to make a simple Pc Speaker sound output?

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