diff --git a/core-java-8/pom.xml b/core-java-8/pom.xml index b19ad10255..4b52237372 100644 --- a/core-java-8/pom.xml +++ b/core-java-8/pom.xml @@ -94,6 +94,11 @@ streamex ${streamex.version} + + joda-time + joda-time + ${joda.version} + @@ -233,6 +238,7 @@ 0.9.0 1.13 0.6.5 + 2.10 3.6.1 1.7.0 diff --git a/core-java-8/src/main/java/com/baeldung/datetime/modify/DateIncrementer.java b/core-java-8/src/main/java/com/baeldung/datetime/modify/DateIncrementer.java new file mode 100644 index 0000000000..607db0da33 --- /dev/null +++ b/core-java-8/src/main/java/com/baeldung/datetime/modify/DateIncrementer.java @@ -0,0 +1,63 @@ +package com.baeldung.datetime.modify; + +import org.apache.commons.lang3.time.DateUtils; +import org.joda.time.DateTime; + +import java.text.ParseException; +import java.text.SimpleDateFormat; +import java.time.LocalDate; +import java.util.Calendar; +import java.util.Date; +import java.util.logging.Logger; + +public class DateIncrementer { + private static final Logger log = Logger.getLogger(DateIncrementer.class.getName()); + private static final int INCREMENT_BY_IN_DAYS = 1; + + public static String addOneDay(String date) { + return LocalDate + .parse(date) + .plusDays(INCREMENT_BY_IN_DAYS) + .toString(); + } + + public static String addOneDayJodaTime(String date) { + DateTime dateTime = new DateTime(date); + return dateTime + .plusDays(INCREMENT_BY_IN_DAYS) + .toString("yyyy-MM-dd"); + } + + public static String addOneDayCalendar(String date) throws ParseException { + SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); + Calendar c = Calendar.getInstance(); + c.setTime(sdf.parse(date)); + c.add(Calendar.DATE, 1); + return sdf.format(c.getTime()); + } + + public static String addOneDayApacheCommons(String date) throws ParseException { + SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); + Date incrementedDate = DateUtils.addDays(sdf.parse(date), 1); + return sdf.format(incrementedDate); + } + + public static void main(String[] args) throws ParseException { + String date = LocalDate + .now() + .toString(); + log.info("Current date = " + date); + + String incrementedDateJava8 = DateIncrementer.addOneDay(date); + log.info("Date incremented by one day using (Java 8): " + incrementedDateJava8); + + String incrementedDateJodaTime = DateIncrementer.addOneDayJodaTime(date); + log.info("Date incremented by one day using (Joda-Time): " + incrementedDateJodaTime); + + String incrementedDateCalendar = addOneDayCalendar(date); + log.info("Date incremented by one day using (java.util.Calendar): " + incrementedDateCalendar); + + String incrementedDateApacheCommons = addOneDayApacheCommons(date); + log.info("Date incremented by one day using (Apache Commons DateUtils): " + incrementedDateApacheCommons); + } +} diff --git a/core-java-8/src/test/java/com/baeldung/datetime/modify/DateIncrementerUnitTest.java b/core-java-8/src/test/java/com/baeldung/datetime/modify/DateIncrementerUnitTest.java new file mode 100644 index 0000000000..e384bf4254 --- /dev/null +++ b/core-java-8/src/test/java/com/baeldung/datetime/modify/DateIncrementerUnitTest.java @@ -0,0 +1,34 @@ +package com.baeldung.datetime.modify; + +import org.junit.Test; + +import static org.junit.Assert.assertEquals; + +public class DateIncrementerUnitTest { + private final static String DATE_TO_INCREMENT = "2018-07-03"; + private final static String EXPECTED_DATE = "2018-07-04"; + + @Test + public void givenDate_whenUsingJava8_thenAddOneDay() throws Exception { + String incrementedDate = DateIncrementer.addOneDay(DATE_TO_INCREMENT); + assertEquals(EXPECTED_DATE, incrementedDate); + } + + @Test + public void givenDate_whenUsingJodaTime_thenAddOneDay() throws Exception { + String incrementedDate = DateIncrementer.addOneDayJodaTime(DATE_TO_INCREMENT); + assertEquals(EXPECTED_DATE, incrementedDate); + } + + @Test + public void givenDate_whenUsingCalendar_thenAddOneDay() throws Exception { + String incrementedDate = DateIncrementer.addOneDayCalendar(DATE_TO_INCREMENT); + assertEquals(EXPECTED_DATE, incrementedDate); + } + + @Test + public void givenDate_whenUsingApacheCommons_thenAddOneDay() throws Exception { + String incrementedDate = DateIncrementer.addOneDayApacheCommons(DATE_TO_INCREMENT); + assertEquals(EXPECTED_DATE, incrementedDate); + } +}