Java

11-Feb-17 0:46

See Forum Guidelines - PLEASE READ - Java Discussion Boards[^].

ECG Analysis

Member 1125298810-Feb-17 8:21

Member 11252988

10-Feb-17 8:21

How do we work on the analysis of the periods of ECG ,example Qr alone, and so, therefore, to be compared with the original signal using java .

Regards

Re: ECG Analysis

Richard MacCutchan10-Feb-17 10:30

10-Feb-17 10:30

By doing research, design, code and test. For more guidelines see Forum Guidelines - PLEASE READ - Java Discussion Boards[^].

Java Coding Guidelines

Jonathan Hicks3-Feb-17 6:34

Jonathan Hicks

3-Feb-17 6:34

Learning Java, reading:
"Java the Complete Reference", Ninth Edition

This is regarding JavaFX.

Writer's code:
ImageView hourglassIV = new ImageView("hourglass.png");
Label hourglassLabel = new Label("Hourglass", hourglassIV);
rootNode.getChildren().add(hourglassLabel);

My Code:

Label hourglass = new Label("Hourglass", new ImageView("hourglass.png"));
rootNode.getChildren().add(hourglass);

Is my code okay, or should I write it like the book Writer's code?

Richard MacCutchan3-Feb-17 6:44

3-Feb-17 6:44

Jonathan Hicks wrote:
Is my code okay

In respect of what? Does it work or is there some problem?

Jonathan Hicks3-Feb-17 6:47

Jonathan Hicks

3-Feb-17 6:47

In respect to accepted Java coding guidelines.
My code works.

I'm a programmer in another language converting to Java and want to do it right.

Richard MacCutchan3-Feb-17 6:56

3-Feb-17 6:56

Jonathan Hicks wrote:
accepted Java coding guidelines.

That is whatever guidelines your company uses.

Re: bookstore java project

Peter_in_27803-Feb-17 10:24

Peter_in_2780

3-Feb-17 10:24

The essential difference is that you will have no way to subsequently access the author's hourglassIV. Whether that matters is up to you. Oh, and your code may be harder to debug.

Cheers,
Peter

Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012

bookstore java project

Amit Kumar Patni31-Jan-17 15:19

Amit Kumar Patni

31-Jan-17 15:19

connentivity problem with postgresql9.4

Richard MacCutchan31-Jan-17 20:37

Forum Guidelines - PLEASE READ - Java Discussion Boards[^].

31-Jan-17 20:37

how write in file (.xls) without delete the older data

iheb1131-Jan-17 9:47

Re: how write in file (.xls) without delete the older data

31-Jan-17 9:47

how write in file (.xls) without delete the older data

Java

HSSFWorkbook wb = new HSSFWorkbook();
 HSSFSheet sheet = wb.createSheet("ma feuille");

 HSSFRow row = sheet.createRow(0);
 HSSFCell cell = null;

 cell = row.createCell((short) 0);
 cell.setCellValue(1234);

 sheet.addMergedRegion(new Region(0,(short)0,0,(short)3));

 FileOutputStream fileOut;
 try {
   fileOut = new FileOutputStream("monfichier.xls");
   wb.write(fileOut);
   fileOut.close();
 } catch (FileNotFoundException e) {
   e.printStackTrace();}

Richard MacCutchan31-Jan-17 20:39

Re: Java Networking Class

31-Jan-17 20:39

You are creating a new workbook and worksheet, so there is no existing data.

Java Networking Class

Mohammad Umer Qureshi30-Jan-17 1:37

Mohammad Umer Qureshi

30-Jan-17 1:37

Hello to everyone

I am developing a simple chat application in java. It has two parts Server.java and Client.java. When I run these files on a local network they work fine but when I run them on PCs that are on different networks it does not works. Can anyone please guide me how to do it.

Thanks

Richard Deeming30-Jan-17 2:12

Richard Deeming

30-Jan-17 2:12

If you want someone to help you fix your code, then you need to share the relevant parts of your code.

We can't access your computer, see your screen, or read your mind. If you don't show us what you've done, we can't tell you what the problem is.

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Re: Java Networking Class

Jochen Arndt30-Jan-17 2:13

Jochen Arndt

30-Jan-17 2:13

It is a networking related problem (configuration, routing, and/or filtering) and not a Java related problem.

The system running the server code must allow incoming traffic to the used port. So you have to configure the firewall settings of your server system and related routers.

When your server system does not have a public IP address (e.g. with a dial-up internet connection) you have to configure also some kind of port forwarding on the router and use a dynamic DNS service.

bookstore java project

Amit Kumar Patni29-Jan-17 3:17

Amit Kumar Patni

29-Jan-17 3:17

can anyone out here provide me with "bookstore java project source code"its urgent ???

Re: bookstore java project

Richard MacCutchan29-Jan-17 3:38

29-Jan-17 3:38

Yes, Google will find it for you, especially if it's urgent, as Google understands such words.

get cell to excel file

iheb1127-Jan-17 4:45

27-Jan-17 4:45

i need to get cell with this value "123k2"
i was tried that code

Java

s.getRow(0).getCell(0).getRichStringCellValue().toString()

but i get this messege "

Cannot get a NUMERIC value from a STRING cell

"

how i can get it

Richard MacCutchan27-Jan-17 5:02

27-Jan-17 5:02

You should not need to call toString on a string item. Other than that the error message does not appear to match the code. Where is the actual code that is trying to get a numeric value?

iheb1127-Jan-17 5:39

27-Jan-17 5:39

ok is done.
so now i need to put this value in a arraylist i tried this code but it is incorrect i need to know where is the fault or have other method to put the cells in arraylist

t[0].add(s.getRow(0).getCell(0).getRichStringCellValue().toString();
          System.out.println("ob   "+t[0]);

Richard Deeming27-Jan-17 6:05

Richard Deeming

27-Jan-17 6:05

With that code, the compiler will tell you where the fault is. (Missing closing parenthesis on the first line.)

If you get a compiler error or a runtime error that you don't understand, and you want us to help you, then you need to include the error details. Just saying "it is incorrect" or "it doesn't work" is not enough.

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Richard MacCutchan27-Jan-17 6:18

27-Jan-17 6:18

iheb11 wrote:
i tried this code but it is incorrect

How is it incorrect? Please do not leave us to guess.

iheb1127-Jan-17 10:06