Java

public class GettingInput
{
   public static void main(String args[])
   {
	   int x;
	   int y;
	   
	   Scanner in = new Scanner(System.in);
	   
	   System.out.print("Enter a number: ");
	   x = in.nextInt();
	   
	   System.out.print("Enter another number: ");
	   y = in.nextInt();
	   
	   int sum = x + y;
	   
	   System.out.println("Sum is " + sum);
   }
}

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

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?

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

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();}