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This tutorial is about multiple ways to find yesterday’s date and tomorrow’s date in java.
- FInd yesterday Date using
LocalDate minusDays(1)method andCalendarinstance - Get Tomorrow’s Date using
LocalDate plusDays(1)method andCalendarinstance
How to get Yesterday’s Date in java
There are multiple ways we can retrieve the last 1-day date or previous day date in java.
- Java8 LocalDate
Java8 introduced Date classes to java.time package. You can check previous post on LocalDate examples
It is easy to get the previous date in java8 with LocalDate
Following are steps
- Get Current Date using the
Localdate.now()method, LocalDate is a Date class that stores Date information without the time and zone information. - It has the
minusDaysmethod that returns previous days.
import java.time.LocalDate;
public class Test {
public static void main(String[] args) throws Exception{
LocalDate currentDate = LocalDate.now();
System.out.println(currentDate); // 2021-09-01
LocalDate previousDay = currentDate.minusDays(1);
System.out.println(previousDay); //2021-08-31
}
}
if you want the previous date and time, You can use the [LocalDateTime](java8-learn-localdatetime-basics-with.html) class in place of LocalDate.
import java.time.LocalDateTime;
public class Test {
public static void main(String[] args) throws Exception{
LocalDateTime currentDate = LocalDateTime.now();
System.out.println(currentDate); // 2021-09-01T10:08:55.568
LocalDateTime previousDay = currentDate.minusDays(1);
System.out.println(previousDay); //2021-08-31T10:08:55.568
}
}
- Calendar Object in java
Calendar is an abstract class in java.lang package that provides converting specific date and time values.
This example prints a yesterday’s date and time
- It prints the Date object from the calendar using the getTime method.
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
public class Test {
public static void main(String[] args) throws Exception{
DateFormat dateFormat = new SimpleDateFormat("yyyy-MMM-dd");
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.DATE, -1);
System.out.println(calendar.getTime()); //Tue Aug 31 09:56:28 IST 2021
dateFormat.format(calendar.getTime()); // Change format as per "yyyy-MMM-dd"
}
}
let’s see an example of how to set yesterday’s date into a calendar object
you can get the previous day using Calendar.HOUR= -24 hours or Calendar.DAY_OF_MONTH =-1 as given example
import java.util.Calendar;
public class Test {
public static void main(String[] args) throws Exception{
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.HOUR, -24);
System.out.println(calendar.getTime()); //Tue Aug 31 11:08:25 IST 2021
Calendar calendar2 = Calendar.getInstance();
calendar2.add(Calendar.DAY_OF_MONTH, -1);
calendar2.getTime();
System.out.println(calendar.getTime()); //Tue Aug 31 11:08:25 IST 2021
}
}
How to get Tomorrows or the next Date in java
The following ways are to get the next date in java.
In Java8, We can use LocalDate and LocalDateTime classes for this.
- LocalDate
LocalDate.plusDays() method return the future days. for tomorrow’s date, We can pass 1 as a parameter.
This example returns tomorrow with Date only not time information.
import java.time.LocalDate;
public class Test {
public static void main(String[] args) throws Exception{
LocalDate currentDate = LocalDate.now();
System.out.println(currentDate); // 2021-09-01
LocalDate previousDay = currentDate.plusDays(1);
System.out.println(previousDay); //2021-09-02
}
}
LocalDateTimeto return Tomorrow date and time
import java.time.LocalDateTime;
public class Test {
public static void main(String[] args) throws Exception{
LocalDateTime currentDate = LocalDateTime.now();
System.out.println(currentDate); // 2021-09-01T11:14:45.223
LocalDateTime previousDay = currentDate.plusDays(1);
System.out.println(previousDay); //2021-09-02T11:14:45.223
}
}
- With Calendar Object Calendar Object is a legacy class that works before the java8 version.
Adding Calendar.HOUR=+24 or Calendar.DAY_OF_MONTH=+1 to calendar object sets Calendar time to tomorrows date using add() method
Here is an example
import java.util.Calendar;
public class Test {
public static void main(String[] args) throws Exception{
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.HOUR, +24);
System.out.println(calendar.getTime()); //Tue Aug 31 11:08:25 IST 2021
Calendar calendar2 = Calendar.getInstance();
calendar2.add(Calendar.DAY_OF_MONTH, +1);
calendar2.getTime();
System.out.println(calendar.getTime()); //Tue Aug 31 11:08:25 IST 2021
}
}
Conclusion
You learned to get previous and next dates in java using the below approaches.
- Java8 LocalDate and LocalDateTime classes
- Legacy Calendar Class in java
I prefer java8 classes as these are robust in handling date and time manipulation.
