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BAEL-1344 add java9 example

This commit is contained in:
abialas 2017-11-17 23:46:09 +01:00
parent 6cd67b0db6
commit 99ae59b961
6 changed files with 134 additions and 4 deletions
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5
core-java-8/src/main/java/com/baeldung/datetime/DateToLocalDateConverter.java
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@ -27,8 +27,9 @@ public class DateToLocalDateConverter {
}
public static LocalDate convertToLocalDateViaMilisecond(Date dateToConvert) {
return LocalDate.from(Instant.ofEpochMilli(dateToConvert.getTime())
.atZone(ZoneId.systemDefault()));
return Instant.ofEpochMilli(dateToConvert.getTime())
.atZone(ZoneId.systemDefault())
.toLocalDate();
}
}

5
core-java-8/src/main/java/com/baeldung/datetime/DateToLocalDateTimeConverter.java
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@ -27,8 +27,9 @@ public class DateToLocalDateTimeConverter {
}
public static LocalDateTime convertToLocalDateTimeViaMilisecond(Date dateToConvert) {
return LocalDateTime.from(Instant.ofEpochMilli(dateToConvert.getTime())
.atZone(ZoneId.systemDefault()));
return Instant.ofEpochMilli(dateToConvert.getTime())
.atZone(ZoneId.systemDefault())
.toLocalDateTime();
}
}

22
core-java-9/src/main/java/com/baeldung/java9/datetime/DateToLocalDateConverter.java Normal file
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@ -0,0 +1,22 @@
/**
*
*/
package com.baeldung.java9.datetime;
import java.time.LocalDate;
import java.time.ZoneId;
import java.util.Date;
/**
* Class which shows a way to convert java.util.Date into java.time.LocalDate with new Java 1.9.
*
* @author abialas
*
*/
public class DateToLocalDateConverter {
public static LocalDate convertToLocalDate(Date dateToConvert) {
return LocalDate.ofInstant(dateToConvert.toInstant(), ZoneId.systemDefault());
}
}

22
core-java-9/src/main/java/com/baeldung/java9/datetime/DateToLocalDateTimeConverter.java Normal file
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@ -0,0 +1,22 @@
/**
*
*/
package com.baeldung.java9.datetime;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.util.Date;
/**
* Class which shows a way to convert java.util.Date into java.time.LocalDateTime with new Java 1.9.
*
* @author abialas
*
*/
public class DateToLocalDateTimeConverter {
public static LocalDateTime convertToLocalDateTime(Date dateToConvert) {
return LocalDateTime.ofInstant(dateToConvert.toInstant(), ZoneId.systemDefault());
}
}

41
core-java-9/src/test/java/com/baeldung/java9/datetime/DateToLocalDateConverterTest.java Normal file
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@ -0,0 +1,41 @@
/**
*
*/
package com.baeldung.java9.datetime;
import static org.junit.Assert.assertEquals;
import java.time.LocalDate;
import java.time.temporal.ChronoField;
import java.util.Calendar;
import java.util.Date;
import org.junit.Test;
import com.baeldung.java9.datetime.DateToLocalDateConverter;
/**
* JUnits for {@link DateToLocalDateConverter} class.
*
* @author abialas
*
*/
public class DateToLocalDateConverterTest {
@Test
public void shouldReturn10thNovember2010WhenConvertToLocalDate() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10);
Date dateToConvert = calendar.getTime();
// when
LocalDate localDateTime = DateToLocalDateConverter.convertToLocalDate(dateToConvert);
// then
assertEquals(2010, localDateTime.get(ChronoField.YEAR));
assertEquals(11, localDateTime.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDateTime.get(ChronoField.DAY_OF_MONTH));
}
}

43
core-java-9/src/test/java/com/baeldung/java9/datetime/DateToLocalDateTimeConverterTest.java Normal file
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@ -0,0 +1,43 @@
/**
*
*/
package com.baeldung.java9.datetime;
import static org.junit.Assert.assertEquals;
import java.time.LocalDateTime;
import java.time.temporal.ChronoField;
import java.util.Calendar;
import java.util.Date;
import org.junit.Test;
import com.baeldung.java9.datetime.DateToLocalDateTimeConverter;
/**
* JUnits for {@link DateToLocalDateTimeConverter} class.
*
* @author abialas
*
*/
public class DateToLocalDateTimeConverterTest {
@Test
public void shouldReturn10thNovember2010time8hour20minWhenConvertViaInstant() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10, 8, 20);
Date dateToConvert = calendar.getTime();
// when
LocalDateTime localDateTime = DateToLocalDateTimeConverter.convertToLocalDateTime(dateToConvert);
// then
assertEquals(2010, localDateTime.get(ChronoField.YEAR));
assertEquals(11, localDateTime.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDateTime.get(ChronoField.DAY_OF_MONTH));
assertEquals(8, localDateTime.get(ChronoField.HOUR_OF_DAY));
assertEquals(20, localDateTime.get(ChronoField.MINUTE_OF_HOUR));
}
}