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  1. import java.text.*;
  2. import java.util.*;
  3.  
  4. class Eveniment {
  5.     private Date dataInceput, dataSfarsit;
  6.     private String nume;
  7.     // Primeste 2 stringuri in format yyyy-MM-dd HH:mm:ss reprezentand data si ora
  8.     // de inceput si de final a evenimentului si inca un string care contine numele
  9.     // cu care apare evenimentul in calendar
  10.     public Eveniment(String dataInceput, String dataSfarsit, String nume) {
  11.         SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
  12.         try {
  13.             this.dataInceput = format.parse(dataInceput);
  14.             this.dataSfarsit = format.parse(dataSfarsit);
  15.         } catch (Exception e) {
  16.             System.out.println("Data nu este in formatul cerut!");
  17.         }
  18.         this.nume = nume;
  19.     }
  20.  
  21.     public Date getDataInceput() {
  22.         return dataInceput;
  23.     }
  24.  
  25.     public Date getDataSfarsit() {
  26.         return dataSfarsit;
  27.     }
  28.  
  29.     public String getNume() {
  30.         return nume;
  31.     }
  32. }
  33.  
  34. class EvenimentRecurent extends Eveniment {
  35.     public static final long HOUR_IN_MSEC = 3600000;
  36.     private int numarOre;
  37.  
  38.     public EvenimentRecurent(String dataInceput, String dataSfarsit, String nume, int numarOre) {
  39.         super(dataInceput, dataSfarsit, nume);
  40.         this.numarOre = numarOre;
  41.     }
  42.  
  43.     public String urmatorulEveniment(String dataEveniment) {
  44.         SimpleDateFormat formatRecurent = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
  45.         Date timpCurent = getDataInceput();
  46.         try {
  47.             while (timpCurent.before(formatRecurent.parse(dataEveniment))) {
  48.                 timpCurent.setTime(timpCurent.getTime() + numarOre * HOUR_IN_MSEC);
  49.             }
  50.         } catch (Exception e) {
  51.             System.out.println("Data nu este in formatul cerut!");
  52.             return null;
  53.         }
  54.         return formatRecurent.format(timpCurent).toString();
  55.     }
  56. }
  57.  
  58. public class Main {
  59.     public static void main(String[] args) {
  60.         EvenimentRecurent er = new EvenimentRecurent("2019-05-09 22:46:00",
  61.                 "2019-03-09 23:00:00", "Scris probleme", 24);
  62.         System.out.println(er.urmatorulEveniment("2019-05-09 22:46:00"));
  63.         // 2019-04-20 22:46:00
  64.     }
  65. }
  66.  
Success #stdin #stdout 0.18s 59112KB
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Standard input is empty
stdout 
2019-05-09 22:46:00
https://ideone.com/rRxwiG
language:
Java (HotSpot 12)
created:
14 hours ago
visibility:
public

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