BAEL-3912: Changes done

core-java-modules/core-java-date-operations-2/src/main/java/com/baeldung/getweeknumber/GetWeekNumberNewJava.java

@@ -0,0 +1,29 @@
+package com.baeldung.getweeknumber;
+
+import java.time.DayOfWeek;
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+
+public class GetWeekNumberNewJava {
+	private LocalDate date;
+
+	public GetWeekNumberNewJava(String day, String dayFormat) {
+		date = LocalDate.parse(day, DateTimeFormatter.ofPattern(dayFormat));
+	}
+	
+	public GetWeekNumberNewJava(int year, int month, int day) {
+		date = LocalDate.of(year, month, day); 
+	}
+	
+	public DayOfWeek getDayOfWeek() {
+		return date.getDayOfWeek();
+	}
+	
+	public static void main(String[] args) {
+		GetWeekNumberNewJava example1 = new GetWeekNumberNewJava(2020, 3, 2);
+		System.out.println(example1.getDayOfWeek());
+
+		GetWeekNumberNewJava example2 = new GetWeekNumberNewJava("20200302", "yyyyMMdd");
+		System.out.println(example2.getDayOfWeek().getValue());
+	}
+}

core-java-modules/core-java-date-operations-2/src/main/java/com/baeldung/getweeknumber/GetWeekNumberOldJava.java

@@ -0,0 +1,35 @@
+package com.baeldung.getweeknumber;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+import java.util.Date;
+
+public class GetWeekNumberOldJava {
+	private Calendar calendar;
+
+	public GetWeekNumberOldJava(String day, String dayFormat) throws ParseException {
+		SimpleDateFormat sdf = new SimpleDateFormat(dayFormat);
+
+		calendar = Calendar.getInstance();
+		Date date = sdf.parse(day);
+		calendar.setTime(date);
+	}
+
+	public GetWeekNumberOldJava(int year, int month, int day) {
+		calendar = Calendar.getInstance();
+		calendar.set(year, month, day);
+	}
+
+	public int getDayOfWeek() {
+		return calendar.get(Calendar.DAY_OF_WEEK);
+	}
+
+	public static void main(String[] args) throws ParseException {
+		GetWeekNumberOldJava example1 = new GetWeekNumberOldJava(2020, 2, 2);
+		System.out.println(example1.getDayOfWeek());
+
+		GetWeekNumberOldJava example2 = new GetWeekNumberOldJava("20200302", "yyyyMMdd");
+		System.out.println(example2.getDayOfWeek());
+	}
+}