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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6. import java.text.SimpleDateFormat;
  7.  
  8. /* Name of the class has to be "Main" only if the class is public. */
  9. class Ideone
  10. {
  11. 	private static SimpleDateFormat SDF =
  12. 		new SimpleDateFormat("dd/MM/yyyy");
  13.  
  14. 	public static void main (String[] args) throws java.lang.Exception
  15. 	{
  16. 		GregorianCalendar cini =
  17. 			new GregorianCalendar();
  18. 		cini.setTime(
  19. 			SDF.parse("01/05/2017"));
  20. 		GregorianCalendar cfin =
  21. 			new GregorianCalendar();
  22. 		cfin.setTime(
  23. 			SDF.parse("15/05/2017"));
  24.  
  25. 		imprimirDia(
  26. 			Calendar.MONDAY,
  27. 			"Lunes",
  28. 			(GregorianCalendar) cini.clone(),
  29. 			(GregorianCalendar) cfin.clone());
  30.  
  31. 		System.out.println("Ahora lo bueno!");
  32. 		imprimirDia(
  33. 			Calendar.SATURDAY,
  34. 			"Sábado!!",
  35. 			(GregorianCalendar) cini.clone(),
  36. 			(GregorianCalendar) cfin.clone());
  37.  
  38. 	}
  39.  
  40. 	private static void imprimirDia(
  41. 		int diaSemanaBuscado,
  42. 		String nombreDia,
  43. 		GregorianCalendar cini,
  44. 		GregorianCalendar cfin) {
  45.  
  46.  
  47.     	int diaInicial = cini.get(Calendar.DAY_OF_WEEK);
  48.     	int diferenciaDias = diaSemanaBuscado - diaInicial; // dias que faltan para el primer lunes.
  49.     	if (diferenciaDias < 0) {
  50.        		diferenciaDias += 6;
  51.     	}
  52.     	cini.add(Calendar.DATE, diferenciaDias); // cini está en el primer lunes
  53.     	while (!cfin.before(cini)) {
  54.        		//dates.add(formatter.format(cini.getTime());
  55.        		System.out.println(nombreDia + ": " + SDF.format(cini.getTime()));
  56.        		cini.add(Calendar.DATE, 7); // Siguiente lunes
  57.     	}
  58.     }		
  59. }
Success #stdin #stdout 0.07s 4386816KB
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Lunes: 01/05/2017
Lunes: 08/05/2017
Lunes: 15/05/2017
Ahora lo bueno!
Sábado!!: 06/05/2017
Sábado!!: 13/05/2017
https://ideone.com/v2yTVj
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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