Update README.md

java-dates/src/test/java/com/baeldung/datetime/DateExtractYearMonthDayIntegerValuesUnitTest.java

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+package com.baeldung.datetime;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.junit.Assert.assertThat;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+import org.junit.Before;
+import org.junit.Test;
+
+public class DateExtractYearMonthDayIntegerValuesUnitTest {
+
+    DateExtractYearMonthDayIntegerValues extractYearMonthDateIntegerValues = new DateExtractYearMonthDayIntegerValues();
+    
+    Date date;
+    
+    @Before
+    public void setup() throws ParseException
+    {
+        date=new SimpleDateFormat("dd-MM-yyyy").parse("01-03-2018");
+    }
+    
+    @Test
+    public void whenGetYear_thenCorrectYear()
+    {
+       int actualYear=extractYearMonthDateIntegerValues.getYear(date);
+       assertThat(actualYear,is(2018));
+    }
+    
+    @Test
+    public void whenGetMonth_thenCorrectMonth()
+    {
+       int actualMonth=extractYearMonthDateIntegerValues.getMonth(date);
+       assertThat(actualMonth,is(02));
+    }
+    
+    @Test
+    public void whenGetDay_thenCorrectDay()
+    {
+       int actualDayOfMonth=extractYearMonthDateIntegerValues.getDay(date);
+       assertThat(actualDayOfMonth,is(01));
+    }
+}